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    Orginal Article
    A review on the effects of applying land and resources satellites to geology and mineral resources
    ZHENG Xiongwei, YANG Jinzhong, CHEN Ling, CHEN Hua, SUN Yongjun, FU Changliang, TONG Liqiang, ZHONG Chang, WEI Yingjuan
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 1-7.   DOI: 10.6046/gtzyyg.2017.s1.01
    Abstract   HTML   PDF (2296KB) ( 1100 )
    With the successful launch of high-resolution domestic satellites such as ZY1-02C, GF-1 and GF-2, the spatial resolution, spectral resolution, temporal resolution and data coverage of land and resources satellites remote sensing data have been greatly improved. Domestic satellites remote sensing data have gradually replaced foreign satellites remote sensing data with the same resolution, and played a significant role in such aspects as the land and resources management and geological disaster emergency investigation, reflecting the large-scale application benefits. This paper summarizes the application of domestic remote sensing data to the field of geology and mineral resources, which fully demonstrates the capability of the land and resources satellites. The prospect of domestic satellites application is also discussed.
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    The capability of domestic satellites’ overseas geological service based on multiple factor analysis
    XIAO Chenchao, DONG Lina, CHEN Weirong, WEI Hongyan
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 8-12.   DOI: 10.6046/gtzyyg.2017.s1.02
    Abstract   HTML   PDF (1331KB) ( 815 )
    With the launch of high resolution satellites, more and more domestic satellites can be used in geological survey and have played important roles in national mineral resource exploration, mineral resource exploitation and monitoring, geohazard investigation and monitoring. Compared with domestic work, overseas geological work needs more domestic satellite data as important supporting data because of the lack of geological work and basic information there. However, the distribution of domestic satellite earth receiving stations abroad is very limited, and hence there is a great uncertainty for overseas data receiving and guarantee. Based on multiple factors analysis, this paper puts forward a weighted grade model to weigh scoring overseas geological service capabilities of domestic satellites and further analyze the overseas service capabilities of ZY1-02C satellite and other domestic satellites, thus providing important reference for conducting overseas data services analysis and overseas geological work.
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    The realization of intelligent optimization based on multi-source and massive domestic satellite image
    ZHENG Xiongwei, WEI Yingjuan, LI Chunying, LEI Bing, GAN Yuhang
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 13-20.   DOI: 10.6046/gtzyyg.2017.s1.03
    Abstract   HTML   PDF (1387KB) ( 1067 )
    In view of the difficulty and time-consuming problem of high quality data filtering in the utilization of massive domestic satellite image data, the authors designed and realized automatic high quality data filtering. The intelligent optimization model of domestic satellite image was constructed based on ZY1-02C,GF-1, GF-2. The requirements of satellite and sensor type, space range, time, spatial resolution and spatial analysis method were abstracted into mathematical model to complete the efficient integration and management of heterogeneous metadata. The evaluation index system and evaluation model of remote sensing image were developed, and the customization requirements of users were set up. By means of adaptive preference rules and autonomous weight setting, the typical operational research methods were used to quantitatively analyze the satellite images so as to optimize the coverage of satellite images. The experimental results show that the coincidence rate of automatic selection and artificial selection is higher than 85%, and the efficiency of implementation is improved by more than 10 times, which verifies the correctness and efficiency of the automatic optimization method.
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    Domestic satellite data of remote sensing geological interpretation system based on the total factor: A case study of the arid and semi-arid mountains
    DONG Shuangfa, JIANG Xue, LI Mingsong, WANG Ruijun, SUN Yongbin
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 21-26.   DOI: 10.6046/gtzyyg.2017.s1.04
    Abstract   HTML   PDF (1210KB) ( 778 )
    In order to improve the service application pattern of remote sensing data in geological survey and mineral evaluation, the authors tried to promote the overall development of comprehensive geological survey. An analysis of the data features of domestic satellite ZY1-02, ZY-3, GF-1, GF-2, cold condition in arid and semi-arid mountainous landscape area, the results of the research on geological survey, present application situation and existing norms and standards, the authors built the total factor system of remote sensing geological interpretation for the cold condition in arid and semi-arid mountainous landscape area. According to the interpretation system, domestic satellite data were used in Altun Mountains in Xinjiang to carry out the application demonstration research. The results obtained by the authors can meet the needs of the industrial requirements and the geological survey work.
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    Detection of remote sensing change information and trend analysis of geological hazards
    HE Chao
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 27-33.   DOI: 10.6046/gtzyyg.2017.s1.05
    Abstract   HTML   PDF (1377KB) ( 818 )
    Because of its complicated tectonics and lithology as well as uneven distribution of the precipitation, Beijing region has developed many geological hazards. Also, there are a number of human engineering activities in the mountain area of Beijing, which will lead to sudden hazards. These sudden hazards are threatening the people and their property safety. Based on remote sensing change detection theory, the authors used the multi-source, multi-temporal domestic satellite data with high resolution to analyze the hazards in Beijing. The authors utilized the remote sensing technology in combination with other methods and means of geographic information systems to analyze the hazards. Among the methods, the authors found that the principal component ratio method is the best. The authors also established the elevation models and the time changing trends model to forecast the degree of danger of geological hazard body in the study area.
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    Destriping model of GF-2 image based on moment matching
    CUI Jian, SHI Penghui, BAI Weiming, LIU Xiaojing
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 34-38.   DOI: 10.6046/gtzyyg.2017.s1.06
    Abstract   HTML   PDF (1040KB) ( 907 )
    Gaofen 2(GF-2) is China’s first civil optical remote sensing satellite with spatial resolution better than 1 m. It has five bands, with wave length range from visible to near infrared light and spatial resolution under star as precise as 0.8 m. Randomly streaking noise was found in the work, which affected interpretation and information extraction. According to the features of GF-2 image stripe, the destriping of GF-2 image was carried out by using moment matching. Then, the destriping result was analyzed by qualitative or quantitative analysis methods. The results show that moment matching can effectively eliminate the streaking noise of the GF-2.
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    Realization of clouds automatic extraction of GF-1 remote sensing image based on sample model
    WEI Yingjuan, ZHENG Xiongwei, LEI Bing, GAN Yuhang
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 39-45.   DOI: 10.6046/gtzyyg.2017.s1.07
    Abstract   HTML   PDF (1144KB) ( 918 )
    A cloud extraction algorithm based on sample model is proposed to solve the problem of automatic recognition of multi - spectral and panchromatic of GF-1 satellite images. Firstly, the samples under the multiple conditions are collected to construct the cloud sample library, and the feature samples of the samples based on the gray features, fractal geometry and the difference histogram and discrete wavelet transform are extracted to classify the samples. Then, based on the classifier, the fast image of the image to be detected is extracted and compressed according to the corresponding feature vector, and the trained classifier is input to judge and complete the cloud snow fog recognition and extraction. The experimental results show that this method is an effective method for automatic extraction of clouds of GF-1 remote sensing images.
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    Application of domestic high resolution remote sensing data to environmental geological survey
    LI Haiying
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 46-51.   DOI: 10.6046/gtzyyg.2017.s1.08
    Abstract   HTML   PDF (2009KB) ( 557 )
    In order to exert the role of high resolution satellite data in environmental investigation, the author employed ZY1-02C satellite as the main data source of remote sensing information extraction and investigated environmental geology in Gaoping area. Through indoor interpretation and field investigation, the author not only established remote sensing interpretation signs for environmental geology in Gaoping area but also revealed the types and distribution of mine environmental pollution and geological disasters in the area of mining damage to the environment. The survey results show that the method can improve the application of remote sensing in the foresight of environmental geological survey work, guide the environmental geological surveying and mapping work, effectively reduce the workload of the field, and improve the overall efficiency of the project. Therefore it is an important means in environmental geological survey.
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    A discussion on domestic satellite data in land and resources supervision:Taking Guangxi Zhuang Autonomous Region as example
    YANG Rujun, XIE Guoxue
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 52-57.   DOI: 10.6046/gtzyyg.2017.s1.09
    Abstract   HTML   PDF (1269KB) ( 683 )
    In recent years, domestic satellite data resources have become increasingly rich, and the application of satellite remote sensing data to the dynamic monitoring of land use is an effective technical route. In this paper, the authors summarized the practical application cases of domestic satellite data in Guangxi land and resources supervision in the past four years, described the related data processing technology, discussed the existing data sources, data quality, coordinate system and resolution, and proposed the practical methods of the complementing of each other for the domestic satellite and unmanned aerial vehicle data according to the actual needs of the management work, which can meet the requirements of macro and micro management of land resources so as to achieve the desired effect.
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    Application of the GF-1 data to karst hydrogeological survey
    CHENG Yang, TANG Jiansheng, SU Chuntian, YANG Yang, LUO Fei
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 58-66.   DOI: 10.6046/gtzyyg.2017.s1.10
    Abstract   HTML   PDF (2383KB) ( 518 )
    Starting from the actual requirement of 1∶50000 hydrogeological and environmental geological survey project in karst area of Southwest China, taking the GF-1 data as the data source,using geographic information system platform for data processing, and employing the remote sensing geological theory and hydrogeological theory as the guidance, the authors applied remote sensing technology to hydrogeological and environmental geological investigation in karst hilly area in southern Hunan. Various types of hydrogeological and environmental geological factors in the study area were interpreted, and remote sensing interpreting marks that are suitable for spring sites in southwest karst area were established. These research results can provide a basis for hydrogeological and environmental geological investigation, effectively improve the efficiency and accuracy of hydrological geological mapping, and expand the application field of domestic satellite data.
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    Application of GF-1 satellite data to remote sensing monitoring of the mine
    XUE Qing, WU Wei, LI Mingsong, DONG Shuangfa, ZHANG Xinyi, SHI Haigang
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 67-72.   DOI: 10.6046/gtzyyg.2017.s1.11
    Abstract   HTML   PDF (1418KB) ( 612 )
    The use of satellite remote sensing technology to carry out mine monitoring. GF-1 satellite with a high acquisition capabilities is an important mining management technical means of Ministry of Land and Resources. GF-1 satellite is China's first launched star in High Resolution Earth Observation System Major Projects, which provides important data source for mine remote sensing monitoring. In this paper, GF-1 data were briefly described, and studies were carried out on geometric correction, band combination, data fusion, image enhancement and other data processing methods. Finally, the best way to deal with the data in the mine remote sensing monitoring was found out. The contents and image characteristics of information extraction for mine remote sensing monitoring were comprehensively expounded. The successful application of this means to Anshan, Benxi, Liaoning iron ore deposits indicates that GF-1 data can be well applied to the mine remote sensing monitoring work in such aspects as mine development, land use, geological disasters, environmental restoration and management.
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    The application of ZY-3 satellite to geological hazards survey and evaluation: A case study of Baoji loess area
    LI Jianqiang, HAN Haihui, GAO Ting, YANG Min, LIANG Nan
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 73-80.   DOI: 10.6046/gtzyyg.2017.s1.12
    Abstract   HTML   PDF (1683KB) ( 481 )
    The development of domestic satellites, especially high resolution satellites, has injected new vitality into the application of satellite remote sensing to geological survey, and has shown good application results. By using the image data of 2013 and 2014 obtained from the ZY-3 satellite (ZY-3), the authors extracted hazard formative factors such as topography, active faults, water systems, vegetation and artificial engineering from, with the purpose of carrying out geological hazards survey in Baoji loess area. Combined with the data of engineering geological petrofabric and rainfall in Baoji area, the authors carried out susceptibility and risk assessment of the geological hazards by using the information model. The results provide a demonstration for geological hazards survey, monitoring and evaluation in the loess landslide area by using domestic high resolution satellites.
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    Remote sensing image and distribution characteristics of landslide disasters in Xinyuan County, Xinjiang
    ZHANG Ce, JIE Wenhui, FU Lihua, WEI Benzan
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 81-84.   DOI: 10.6046/gtzyyg.2017.s1.13
    Abstract   HTML   PDF (932KB) ( 945 )
    Due to its special geographical position and geological conditions, landslide disasters are well-developed in Xinyuan County, Xinjiang. This area is one of the most serious landslide hazard areas in Yili Prefecture. Due to the landslide disasters, regional economic development and people’s lives and property have suffered from heavy losses. Based on the domestic GF-1 satellite data sources, the authors carried out investigations and research work, and explained 818 landslide disasters. According to the distribution and the intensity of landslide disasters, the authors point out that Zeketaikansu ditch area of Awulale Mountain, Qiapu River south bank, Kuerdening-Kuokeqiaoke, southern side of Alemale Town, and northern slope of Natila Mountain are key areas for prevention of geological disasters.
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    Application analysis of remote sensing dynamic monitoring for geological hazards in southwest mountainous areas using domestic high resolution satellite data
    FAN Min, SUN Xiaofei, SU Fenghuan, JIANG Huabiao, HAN Lei
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 85-89.   DOI: 10.6046/gtzyyg.2017.s1.14
    Abstract   HTML   PDF (1007KB) ( 540 )
    For the purpose of promoting applications of domestic high resolution satellite products to geological hazard remote sensing survey and dynamic monitoring, the authors chose study areas in Sichuan,Chongqing and Guizhou, where people suffer from high risk and frequent geological hazards. On the basis of domestic high resolution satellite images obtained in 2014 and 2015, the authors conducted comparison and analysis to identify the dynamic changes in geological hazards. The authors also analyzed application results of domestic high resolution satellite products on geological hazard dynamic monitoring in the study areas, along with evaluating and exploring their practicability and prospect. In this way, the authors provide an objective basis for further applications and promotion of domestic high resolution satellite products on geological hazard remote sensing survey and dynamic monitoring in southwest mountainous areas. The results indicate that domestic high resolution satellites can provide good data quality in the remote sensing monitoring of geological hazards, and human-computer interactive interpretations for orthophoto images exhibit excellent results and accuracy. It is therefore held that the domestic satellites deserve application and promotion in the field of geological hazard remote sensing survey and dynamic monitoring in southwest mountainous areas.
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    Remote sensing monitoring of wetlands dynamics in the Manas River basin from 1998 to 2015
    WEI Benzan, FU Lihua, FAN Fang, ZHANG Ce, JIE Wenhui, DONG Shuangfa
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 90-94.   DOI: 10.6046/gtzyyg.2017.s1.15
    Abstract   HTML   PDF (924KB) ( 583 )
    Using TM data of 1998, 2005, 2010 and land change survey remote sensing data, in combination with the visual interpretation and GIS technology, the authors extracted boundaries of the Manas River basin wetlands, and analyzed the influence produced by climate and anthropogenic factors on dynamic changing of wetland. The results show three different relationships. Firstly, the degradation of Manas River basin wetland was more serious from 1998 to 2015, especially lake wetlands and marsh wetlands. Meanwhile, wetland had shrunk dramatically from 2010 to 2015. Secondly, the period of 2010—2015 had the highest annual changing rate of lake wetlands and marsh wetlands, reaching respectively -12.90% and -14.30%. Thirdly, human activities have become the most important factor for wetland change. The study of the relationship between human activities and climate change as well as wetlands response reveals that the human factor has become the more important factor than climate for wetland change.
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    Application of ZY1-02C remote sensing data to the investigation of geoparks:Taking Jixian County,Tianjin City for example
    WANG Yongli, DONG Weihong
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 95-100.   DOI: 10.6046/gtzyyg.2017.s1.16
    Abstract   HTML   PDF (2335KB) ( 3188 )
    With the further development of geological tourist resources, a large number of geoparks are established, which urgently needs the comprehensive and systematic investigation of the geo-heritage, finding out the quantity, quality and traits. With remote sensing technology, the distribution of the regional geo-heritage can be fully understood, new geo-heritage can be explored and expanded and the existing geo-heritage can be monitored and protected. The successive launch of the domestic satellites provides great convenience for the remote sensing investigation of geo-heritage. This paper takes Jixian National Geopark as an example, probing into the application of ZY1-02C satellite to the investigation of geo-heritage. The interpreting marks of middle-upper Proterozoic strata are created by using images, and combined with GF-2 satellite image, the typical geological formation is derived and analyzed, finally generating the 3D image of Panshan granitic geomorphologic landscape, which forms the direct material for the visiting route in the geopark. The result indicates that the data of ZY1-02C satellite has clear texture, better for the subdivision of stratigraphic unit; the 3D remote sensing visual scene produced by the combination of GF-2 satellite image and DEM is worth the reference for the selection of the visiting route in the geopark.
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    Dynamic monitoring of water erosion desertification in Dianchi watershed based on RS and GIS
    SHI Qingyun, ZHAO Zhifang, SONG Kun, YAN Jieru
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 101-105.   DOI: 10.6046/gtzyyg.2017.s1.17
    Abstract   HTML   PDF (960KB) ( 690 )
    Most of the Dianchi watershed is in the fragile ecological environment, which desertification problem is very prominent. This research extracted water erosion desertification from remote sensing images of Dianchi watershed in 2000, 2008 and 2015 by RS and GIS technology. The results show that the water erosion desertification mainly distributed in the northeast and south of the study area, and the overall trend is decreasing. The area of water erosion desertification decreased 78.44 km2 from 2000 to 2008, decreased 9.81 km2 every year; the area of water erosion desertification decreased 218.89 km2 from 2008 to 2015, decreased 27.36 km2 every year. People had closed hillsides to facilitate afforestation, reforested and modified of land use patterns improving water erosion desertification phenomenon of Dianchi watershed, in recent years.
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    Temporal and spatial evolution and genesis of rocky desertification based on RS and GIS in Wenshan Prefecture
    GUO Liqin, ZHAO Zhifang, DAI Qixue, LIANG Mingyue, FU Yixun, CHEN Bailian
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 106-113.   DOI: 10.6046/gtzyyg.2017.s1.18
    Abstract   HTML   PDF (1264KB) ( 871 )
    Wenshan Prefecture is one of the most developed areas of rocky desertification in eastern Yunnan. The process of rocky desertification has always been widely concerned by experts both in China and abroad. In this paper, using Wenshan Prefecture as the research object, selecting the remote sensing data of TM in 2008 and GF-1, ZY-3,YG-2 in 2014 as data source, employing RS and GIS technology, rocky desertification status data are extracted. The temporal and spatial evolution characteristics of rocky desertification and cause analysis in Wenshan State were explored. The results show that the rocky desertification area of Wenshan Prefecture was reduced by 1 796.41 km2 from 2008 to 2014, the type of rocky desertification dominated by Wenshan Prefecture was changed from heavy to moderate, and rock desertification area decreased except for Xichou, Malipo and Qiubei, and that the highest rate of rocky desertification in Wenshan Prefecture was within 0.5 km from the tectonic fault zone, in carbonate rock and clastic rock areas, on steep slopes (15 °,25 °], in areas with large population density and within 50 m from mining activities. In the rocky desertification prone areas, we should give priority to doing rocky desertification control measures, dealing with the relationship between man and land, and preventing human factors from inducing and aggravating rocky desertification development.
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    Remote sensing survey and proposal for protection of the shoreline and the mangrove wetland in Guangdong Province
    ZHAO Yuling
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 114-120.   DOI: 10.6046/gtzyyg.2017.s1.19
    Abstract   HTML   PDF (1073KB) ( 901 )
    Based on large quantities of remote sensing data obtained in 2015 and topographic data, the authors studied the distribution of different types of shorelines and mangrove wetland. In general, the results show the total length of the mainland shoreline in Guangdong Province was 3 829.91 km in 2015. The length of the artificial shoreline, gravel coast, rocky coast, biological coast and muddy coast accounted for 54.36%, 15.24%, 14.64%, 8.57% and 7.19% of the total length of the mainland shoreline, respectively. Coastline coefficient of Zhuhai, Shenzhen, Shantou, Zhanjiang and Shanwei which have a highest development is higher than other cities in Guangdong Province. Coastline coefficient of Guangzhou, Jiangmen, Maoming, Jieyang, Chaozhou and Huizhou which still have the very big promotions was lower than the average of the whole province. The area of the mangrove wetlands is 12 586.56 hm2. The mangrove wetlands are mainly distributed in Chaozhou, Shantou, Huizhou, Shenzhen, Dongguan, Guangzhou, Zhongshan, Zhuhai, Jiangmen, Yangjiang, Maoming and Zhanjiang. The data for mangrove wetland ecological protection and restoration provide important information.
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    Research on natural resources based on domestic satellite data:Exemplified by Midwest Heilongjiang Province
    Ding Yuxue
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 121-126.   DOI: 10.6046/gtzyyg.2017.s1.20
    Abstract   HTML   PDF (987KB) ( 1278 )
    Targeting at the needs of the current stage of natural resource management and ecological protection, relying on existing work base and resource background, using domestic satellite resources on the 3rd, resources 1, 02C, and high score 1, 2 satellite remote sensing data, and based on the data collection, remote sensing data source selection, information extraction, field investigation and verification, picture preparation, comprehensive analysis, and the results of data storage, report preparation and other specific investigation methods, the authors carried out remote sensing survey and monitoring of natural resources and ecological environment in the central and western regions of Heilongjiang Province so as to form annual data of natural resources and ecological environment, update the data and series of results and reports, and provide the basis for the management of land and space.
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    Application of GF-2 satellite data to mine geological environment investigation in Daye, Hubei Province
    Ma Xiuqiang, Peng Ling, Xu Suning, Ding Zhilei
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 127-131.   DOI: 10.6046/gtzyyg.2017.s1.21
    Abstract   HTML   PDF (1426KB) ( 968 )
    The land resources and ecological environment destruction caused by mining activities can be monitored and analyzed by remote sensing technology, and it is of great practical significance to protect the ecological environment of the mining area and establish a scientific evaluation reference system. With Daye in Hubei Province as the study area and by employing of the GF-2 satellite data, the authors enhanced the information of polluted water and vegetation, then qualitatively analyzed the pollution level of water using band operation and density division method based on the analysis of spectral features and spatial features of surface features. Land use was analyzed by maximum likelihood method to monitor mine development status and mine environment change in important ore concentration areas. The authors investigated and analyzed the application of GF-2 satellite data to mining geological environment investigation in Daye area, and the result obtained can provide reference for the reasonable protection of the mining area ecological environment and the application of the domestic high resolution satellite data in geological survey.
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    Application of domestic high-resolution satellite imagery data to the investigation of surface collapse in the Tiechanggou coal mine of Xinjiang
    MEI Junjun, XU Suning, PENG Ling, XING Gulian, LI Wenjuan
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 132-136.   DOI: 10.6046/gtzyyg.2017.s1.22
    Abstract   HTML   PDF (1026KB) ( 798 )
    The problem which has become serious over time is coal mine zone’s surface collapse and ground crevice. Therefore, making a thorough investigation of the type, size and distribution of geological disasters in the mining area and analyzing the causes, damage degree and development trend of the geological disasters are very important for the green mine construction. With the ZY1-02C and GF-1/2 data as the basis, on the basis of the characteristics of known subsidence area and the establishment of remote sensing imagery interpretation system, and by using the methods of human-computer interactive interpretation, the authors delineated the boundary, the direction and the influence area of the ground collapse area of the Tiechanggou mine in Xinjiang. The analysis shows that the data obtained by domestic high-resolution satellites of ZY1-02C HR, GF-1 and GF-2 can effectively guarantee the remote sensing precise identification of large and medium-sized ground subsidence in the mining area. The domestic high-resolution satellite ZY1-02C and GF-1 can meet the 1∶50 000 scale, and the GF-2 satellite remote sensing data can meet the 1∶25 000 scale. With the home-made satellites of China, the data resources are abundant, which provide important data guarantee for remote sensing monitoring of mine geological disasters in the future.
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    Remote sensing interpretation and application of the geological unit of Suolake area in Xinjiang based on GF-1 satellite data
    WANG Ruijun, DONG Shuangfa, SUN Yongbin, LI Jingyue
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 137-143.   DOI: 10.6046/gtzyyg.2017.s1.23
    Abstract   HTML   PDF (1000KB) ( 900 )
    In order to understand the performance of GF-1 satellite image and find out metallogenic geological environment and regularity, the authors used GF-1 image to make detailed remote sensing interpretation of the ore-controlling geological unit in this area and, in combination with ETM+ multi-spectral remote-sensing image and aerial hyperspectral data, carried out ore-prospecting work. In Suolake area along the Altun gold metallogenic belt, the authors used multi-source remote-sensing data to carry out remote-sensing interpretation of the ore-controlling geological unit. Based on an integrated study of geological characteristics, remote-sensing image features and remote-sensing altered mineral characteristics of ore-controlling geological unit from remote-sensing interpretation, the authors further constructed remote-sensing interpretation ore-prospecting model and, with this model, delineated the polymetallic prospective area in the periphery of Suolake area. Through field verification, copper and gold polymetallic ore clues were discovered, thus achieving relatively satisfactory ore-prospecting result.
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    Remote sensing ecological environment survey of county area based on ZY1-02C: A case study of Puge County
    GAO Hui, ZHANG Jinghua, ZHANG Jianlong
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 144-150.   DOI: 10.6046/gtzyyg.2017.s1.24
    Abstract   HTML   PDF (2075KB) ( 587 )
    With ZY1-02C as the main data source, the authors carried out the county area’s ecological environment remote sensing survey in Puge Country, Sichuan Province, selected five evaluation indicators to analyze the biological, vegetation, water, land and environmental pollution in the area,which included biological abundance index, vegetation index, water density index, land degradation index, and environment quality evaluation index, and set up land use signs with the first class remote sensing interpretation sign for ZY1-02C. The results of remote sensing survey are mainly used in the establishment of bioabundance index and vegetation cover index. The evaluation results show that ecological environment index (EI) of Puge is 82.08, the evaluation level is excellent, and the overall ecological environment is good. The county ecological environmental quality assessment method can accurately, truthfully and effectively reflect the situation of county ecological environment. Due to using of domestic satellite, the data acquisition and cost reduction become very easy. Survey results show that ZY1-02C can be very good in satisfying the requirements of county ecological environment remote sensing investigation.
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    Using domestic satellite data to carry out wetland survey:Exemplified by Heilongjiang Province
    DING Yuxue, CHU Yu, XUE Guangyin
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 151-154.   DOI: 10.6046/gtzyyg.2017.s1.25
    Abstract   HTML   PDF (493KB) ( 669 )
    For the purpose of studying the status of wetland resources in Heilongjiang Province and on the basis of the theory of earth system science, the authors made deep excavation of the capability of GF-1, GF-2, ZY1-02C, ZY-3 and some other domestic high score data for fine characterization of the features of micro-geomorphology and, by using multi - scale object - oriented image analysis method and human-computer interaction full resolution interpretation method, found out that the wetland area of Heilongjiang Province was 33 339.55 km2 in 2015. A comparison with the previous survey data shows that in the past thirty years mountain wetland area was reduced by about 20% to 30%, and plain area wetland area was reduced by about 40% to 50%. The results obtained by the authors provide data support for solving the problem as to how to strengthen the protection and management of wetland resources.
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    Application of ZY1-02C satellite data to the survey of groundwater overflow zone in the front of alluvial-pluvial fan zone of Golmud River
    WANG Xuqing, WANG Yu, GUO Yingping
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 155-159.   DOI: 10.6046/gtzyyg.2017.s1.26
    Abstract   HTML   PDF (1054KB) ( 799 )
    Based on field hydrogeological theory and remote sensing geological interpretation method, taking the groundwater overflow zone in front of alluvial-pluvial fan zone of the Golmud River as the study area, and using the satellite data of ZY1-02C as the data source, the authors explored the interpretation methods of hydrological factors such as springs, spring set rivers and groundwater overflow area in the front of alluvial-pluvial fan zone in inland arid basin with ZY1-02C data. In this practical application results, the ZY1-02C satellite images yielded rich surface information and clear image interpretation marks, which reflect the morphological characteristics and distribution of the groundwater overflow zone in the front of the alluvial fan well. This experiment proves that ZY1-02C satellite has a good application prospect for hydrogeological survey in the arid / semi-arid area.
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    Eco-environmental changes in Yancheng coastal zone based on the domestic resource satellite data
    ZHAN Yating, ZHU Yefei, SU Yiming, CUI Yanmei
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 160-165.   DOI: 10.6046/gtzyyg.2017.s1.27
    Abstract   HTML   PDF (1052KB) ( 752 )
    The coastal zone as the transitional zone of ocean and continent is the place with most complex and special ecological environment. Research on land use changes is important for understanding eco-environmental changes in the coastal zone. Based on the domestic resource satellite data in 2015 and using RS and GIS techniques, the authors obtained land use data in Yancheng coastal zone. An analysis of and comparison with the data in the second national land survey in 2009 led to the obtaining of basic dynamic changes of grassland, forestland, river, fishery land, salt pan and coastal beach. Through the analysis of cover type changes of ecological units and their causes, four suggestions were put forward on land resources utilization and protection, with the purpose of providing scientific basis for rational exploitation and utilization as well as ecological environment protection of land resources in Yancheng coastal zone.
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    Application of image boundary extraction technology to satellite orthophoto database
    WANG Yanzuo, SUI Xinxin, WEI Yingjuan, JIN Peidong
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 166-170.   DOI: 10.6046/gtzyyg.2017.s1.28
    Abstract   HTML   PDF (841KB) ( 1005 )
    In the satellite orthophoto database, the real boundaries of orthophoto images can significantly improve the accuracy and speed of operations such as spatial query and coverage analysis. This paper proposes and implements an image boundary extraction method based on Pixel-Following algorithm and Douglas-Peukcer algorithm. After the identification of background pixel value of the image, the boundary is tracked using the Pixel-Following algorithm, and then the redundant vertexes of the boundary are deleted using the Douglas-Peukcer algorithm. This method has been deployed in the satellite orthophoto database, and the results show that this method can extract the real boundary of the orthophoto image stably and accurately, with good application effects achieved.
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    Statistical analysis of domestic satellites data based on time pyramids model
    FENG Lei, ZHOU Wei, WANG Yanzuo, LIU Ruoxi
    REMOTE SENSING FOR LAND & RESOURCES. 2017, 29 (s1): 171-174.   DOI: 10.6046/gtzyyg.2017.s1.29
    Abstract   HTML   PDF (750KB) ( 414 )
    The process of statistical analysis and spatial coverage of massive resource satellites data is very time-consuming work. Large amounts of computation often leads to the result that statistical analysis cannot be quickly generated. This paper proposes the construction of “pyramid model” approach to solve this problem. The remote sensing image data are archived at four levels, i.e., daily, weekly, monthly and yearly level for statistical analysis. This model achieved good results in the practical application. Practice shows that exchange space (with a little redundant data) for time (high efficiency) in the way of statistics of resource satellite data analysis is very practical and feasible.
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