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  • Table of Content
       , Volume 24 Issue 1 Previous Issue    Next Issue
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    Review
    Advances in the Study of Evapotranspiration of Regional Land Surface Based on Remote Sensing Technology
    WANG Wan-tong, ZHAO Qing-liang, DU Jia
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 1-7.   DOI: 10.6046/gtzyyg.2012.01.01
    Abstract   HTML   PDF (755KB) ( 1688 )
    The development of remote sensing technology provides a new means for the inversion and estimation of widespread land surface evapotranspiration(ET). Researchers both in China and abroad have already studied the theories and techniques of this field. The principle of energy balance is the basic theory of estimating land surface ET, which has led to the formulation of a lot of models and algorithms of remote sensing ET. Based on an analysis of basic principles as well as merits and shortcomings of several models, the authors expound the adaptability and progress of different methods, point out the existing problems of the study of remote sensing ET, and finally prospect the development trend of remote sensing ET.
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    Technology and Methodology
    A Study of Algorithm of Geometric Processing for MODIS Image
    LIANG Zhi-hua
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 8-12.   DOI: 10.6046/gtzyyg.2012.01.02
    Abstract   HTML   PDF (1291KB) ( 1278 )
    The geometric process of MODIS image is a kind of basic research work and is a key step before the utilization of data. In view of the fact that the large scanning angle of MODIS and the earth’s curvature lead to the overlapping and dislocation, this paper deals in detail with high precision location and geometric correction for MODIS data. Based on a comparative study of the advantages and disadvantages in some overlapping removing algorithms, the author presents the direct method and direct-indirect method which can remove overlap in geometric correction. It is proved that the two kinds of resampling methods are feasible, and the precision of geometric correction can basically meet the requirement. Thus, the real image geometric character is rebuilt.
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    A New Approach to Automatic Positioning of Road Junctions in High Spatial Resolution Remotely Sensed Imagery
    ZHANG Wei-wei, MAO Zheng-yuan
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 13-16.   DOI: 10.6046/gtzyyg.2012.01.03
    Abstract   HTML   PDF (1291KB) ( 1331 )
    On the basis of systematically inducing and analyzing the methods to extract road junctions from remotely sensed imagery,a new approach to automatically positioning road junctions in high spatial resolution images is presented in this paper. The related algorithm includes the following steps: firstly,the homogeneous areas are obtained by lower gradient operator; then,waters,shadows and small areal distracting features are removed one by one; after that,the straight lines are detected in the binary image by means of Hough transform; finally,the detected straight lines are sorted according to the frequency with which they appear,and the road junctions are indicated with the average coordinates of the intersections of several top frequent straight lines each of which at least has one intersection angle larger than the predetermined threshold. In the case study,an intersection and a junction of three roads were located in local urban area of Fuzhou by using QuickBird panchromatic image as sample data,showing that the proposed approach,with robustness against spectral confusion and confused features,can efficiently and accurately locate road junctions.
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    A Classification Method for Mobile Laser Scanning Data Based on Object Feature Extraction
    LI Ting, ZHAN Qing-ming, YU Liang
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 17-21.   DOI: 10.6046/gtzyyg.2012.01.04
    Abstract   HTML   PDF (1277KB) ( 3514 )
    Compared with traditional survey technologies, mobile laser scanning has many advantages. Its characteristics make it possible to rapidly acquire large-area high-precision 3D spatial data for reconstruction of 3D (three-dimensional) model. This paper focuses on the classification of mobile laser scanning data. The authors present a multi-level classification method based on object feature extraction, namely extraction of main features by PCA(Principal Component Analysis). This method was applied to blocks point data obtained by mobile laser scanning, and the results show that the proposed classification method is promising.
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    The Methodology of Lithologic Information Extraction by Using ASTER Data in West Kunlun Mountains
    YU Jian, ZHANG Zhi, LI Min-jia, CHEN Teng, HE Wen-xi
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 22-27.   DOI: 10.6046/gtzyyg.2012.01.05
    Abstract   HTML   PDF (2209KB) ( 1968 )
    Based on an analysis of mineral composition and spectral characteristics of samples collected in Bulunkou area of West Kunlun Mountains,the authors extracted the end-member spectra of lithologic units by using ASTER data of the study area,and the ASTER VNIR and SWIR data of the study area were processed by matched filtering method, and then nine important litholigic units in the study area were extracted. These lithologic units include biotite quartzite,biotite plagioclase gneiss,biotite quartz schist and biotite hornblende plagioclase gneiss which belong to Palaeoproterozoic Bulunkuole Group (Pt1) and chlorite sericite slate,black phyllite and sericite quartz schist that belong to Silurian Wenquangou Group (SW) as well as quartz diorite and tonalite. An analysis of geological data available and field survey results demonstrate that the method adopted by the authors can extract credible information and supply references to lithologic mapping and mineral exploration.
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    Research on an Improved Integrated Filtering Algorithm of SAR Interferogram
    SONG Rui, LIU Guang, PERSKI Zbigniew, GUO Hua-dong
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 28-35.   DOI: 10.6046/gtzyyg.2012.01.06
    Abstract   HTML   PDF (4623KB) ( 1210 )
    The interferogram with SAR phase information is the key factor that directly affects the further analysis of the deformation in the experimental area. Effective filter algorithm can suppress phase noise in the interferogram and improve the precision of the interferometry. In the obtained phase images, the characteristics of nearly annular stripe show the surface subsidence caused by coal mining. The authors therefore improve the original gradient-based filter algorithm firstly, and then combine Goldstein filter with the improved gradient-based adaptive filter, making it perform more effectively in SAR interference phase mode from mining subsidence. In the experiment the authors selected the PALSAR interferogram data of the Fengfeng coal mine in Hebei Province to evaluate the detailed performance of such filtering methods. Experimental results show that the edge of deformation stripe in phase image is clearer, suggesting the validity of the integrated filtering algorithm which is characterized by good denoising effect and nice preservation of phase resolution.
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    Land Cover Classification with SVM Based on NWFE and Texture Features
    CUI Lin-lin, LUO Yi, BAO An-ming
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 36-42.   DOI: 10.6046/gtzyyg.2012.01.07
    Abstract   HTML   PDF (5109KB) ( 1164 )
    Land cover classification based on remote sensing image is of significant importance to agriculture, forestry and environment monitoring. Algorithm of remote sensing information retrieval is always an important research topic in this field. This paper made an effort to combine the Nonparametric Weighted Feature Extraction (NWFE) and texture features with the Support Vector Machines (SVM) so as to achieve a higher classification precision. The combined approach was applied to land cover classification of the Manasi River oasis in Xinjiang in 2006, and was compared with approaches of SVM based on Principal Component Analysis (PCA) and texture features and based on original bands and texture features. The results show that the method of SVM combined with NWFE and texture features can capture not only the distribution of land cover but also the difference among land cover types. An overall classification accuracy of 89.17% is obtained, which is better than those of two other classification results.
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    A Study of Land Use Change Detection Based on High Resolution Remote Sensing Images
    WANG Yan, SHU Ning, GONG Yan
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 43-47.   DOI: 10.6046/gtzyyg.2012.01.08
    Abstract   HTML   PDF (2002KB) ( 2246 )
    An approach to land use change detection by using high resolution remote sensing images is put forward in this paper. With the help of GIS land use map, image objects can be obtained by the matching of land use map and remote sensing images in the same region. Meanwhile pixel-based supervised classification is conducted for each image so that each pixel has its own class code. Then image subsegments can be obtained based on the image segment and the class code of each pixel within it. Image subsegments can be regarded as the basic units for feature extraction. Correlation coefficient is used for detecting changes between the images gotten from different time periods, and instead of the empirical selection, the change threshold is founded automatically by using ROC curve (receiver operating characteristic curve). Two multispectral Quickbird images obtained in 2002 and 2005 respectively and a 1:10 000 land use map of 2002 in the same region were used in the experiment. This study area is located in Wuhan City and the result shows that most land use changes can be detected, and hence this approach is effective.
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    Technology Application
    The Application of ASTER Data to Bauxite Deposit Pre-survey in Northern China: A Case Study of Mianchi Area, Western Henan
    ZHANG Yun-feng, LI Ling-jun, FENG Chun
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 48-52.   DOI: 10.6046/gtzyyg.2012.01.09
    Abstract   HTML   PDF (4677KB) ( 1132 )
    ASTER data have the superiority of ground resolution and spectral resolution, and hence are suitable for medium-scale pre-survey of mineral resources. For the sake of studying the effect of applying ASTER data to bauxite pre-survey, The authors made an experiment that included image color composite, geological interpretation, and remote sensing extraction of anomaly information in Mianchi area of Western Henan. The result shows that the ASTER data are effective in delineating "ore-bearing image unit" and extracting remote sensing information in exposed bedrock areas of northern China.
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    Research on Quantitative Remote Sensing of Soil Salinization in the Arid Area Based on Electromagnetic Induction
    LI Xiao-ming, YANG Jing-song, YU Mei, YANG Qi-yong, LIU Mei-xian
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 53-58.   DOI: 10.6046/gtzyyg.2012.01.10
    Abstract   HTML   PDF (2078KB) ( 1482 )
    For the sake of quantitative remote sensing study of soil salinization in the typical arid area, Landsat 7 ETM+ image of the typical arid area in South Xinjiang was obtained. The land use type of farmland was extracted by decision tree classification. The correlation between soil salinization, etectromagnetic induction data and spectrum characteristics was analyzed by mobile electromagnetic survey and extraction of spectrum characteristics in farmland. On such a basis, a quantitative inversion model of soil salinization was obtained. Some results have been obtained: the land use classification has a favorable accuracy with a total precision of 93.75% and a Kappa coefficient of 0.9154; multiple regression indicates that there exists significant correlation between soil salinization detected by the mobile electromagnetic survey and DVI (Difference Vegetable Indice), B2 (the value of band 2 of ETM+ images) and RVI (Ratio Vegetable Index), and that the inversion model of soil salinization can be used to identify salinized soils quantitatively. Results from 89 verification points show that, although the quantitative inversion accuracy of remote sensing is a little lower than that of geo-statistics analysis based on electromagnetic induction, the correlation between the inversion values and the measured values is favorable, and the accuracy is acceptable. Thus the means put forward in this paper is an rapid and effective technology for large-scale soil salinization monitoring.
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    Quaternary Lacustrine Deposition and Geological Environment Variations of Doqen Co-Gala Co Basin in Tibet
    ZHANG Kun, SUN Yan-gui, JU Sheng-cheng, MA Shi-bin
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 59-64.   DOI: 10.6046/gtzyyg.2012.01.11
    Abstract   HTML   PDF (2953KB) ( 1601 )
    To verify the lacustrine deposition and geological environment in Gala Co of Tibet in Quaternary Period, the authors carried out studies in this aspect by using remote sensing technologies such as DEM, ETM and ASTER interpretation images, The results show that severe deformation of lake deposition in southern Tibet during Middle Pleistocene epoch was caused by differential uplift of Gonghe movement, and angular unconformity proved the existence of this movement. It is held that the drastic drying of Gala Co was caused by its running dry after the adjacent Mabu Co had become a new dividing range in the basin as a consequence of global warming. The dryness of Gala Co has caused desertification in the region and worsened the regional natural environment.
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    Shoreline Extraction and Change Analysis of the Jiuduansha Islands with the Support of Remote Sensing and GIS Technologies
    FENG Yong-jiu, LIU Dan, HAN Zhen
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 65-69.   DOI: 10.6046/gtzyyg.2012.01.12
    Abstract   HTML   PDF (1672KB) ( 18691 )
    With the support of remote sensing and GIS technologies,the shoreline information of the Jiuduansha Wetland Nature Reserve in Shanghai obtained in 2001,2005 and 2008 was interpreted respectively through an ArcInfo embedded software,shorelineExtractor,which integrates unsupervised classifiers,map generalization,discrete surface features removal and shoreline tracking. The extracted shorelines were re-sampled at 30,90,150,210,and 270 m respectively to compute the fractal dimensions. A consequent analysis of the shoreline lengths,shoal areas and key positions experiencing growth was conducted in detail. The results demonstrate that there are remarkable differences between the positions of silt growth in three shoals of the Jiuduansha Islands,i.e. upper,middle and lower shoals. The silt growth is dramatically fast in northern upper shoal,northeastern and southwestern middle shoal,and northeastern and southwestern lower shoal. The growths of shoreline length and shore area have the same tendency,indicating a fast growth in upper shoal,a moderate growth in lower shoal and a slow growth in middle shoal. In addition,the fractal property of the Jiuduansha Island is evident, with high values of goodness-of-fit. The fractal dimension of the whole Jiuduansha Island was growing from 2001 to 2008, and the fractal dimensions of upper and middle shoals are less than the dimension of the whole Jiuduansha,whereas the fractal dimension of lower shoal is larger than that of the whole Jiuduansha.
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    Remote Sensing Monitoring and Analysis of Fractional Vegetation Cover in the Water Source Area of the Middle Route of Projects to Divert Water from the South to the North
    ZHOU Zhi-qiang, ZENG Yuan, ZHANG Lei, DU Xin, WU Bing-fang
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 70-76.   DOI: 10.6046/gtzyyg.2012.01.13
    Abstract   HTML   PDF (4171KB) ( 1700 )
    The middle route of the projects to divert water from the south to the north is a part of the large-scale inter-basin water transfer projects in China. It is important to carry out the study and analysis of changes of regional fractional vegetation cover for the protection of ecological environment and water quality. In this paper, based on the data of the remote sensing images obtained in 2000 and 2009, the authors estimated fractional vegetation cover of the water source area by using the method of dimidiate pixel model from normalized difference vegetation index (NDVI), and analyzed the temporal and spatial variation characteristics of the fractional vegetation cover. The main conclusions are as follows: The average fractional vegetation cover in the water source area was 67.5% in 2000, and reached 72% in 2009, with the average fractional vegetation cover being increased in the whole area. The spatial characteristics of increased fractional vegetation cover show that the increase in central region is relatively higher than that in the eastern and western regions; in different kinds of vegetation types, the deciduous conifer forest shows the largest average increase of the fractional vegetation cover, while the grassland shows the smallest increase; fractional vegetation cover has increased in different degrees in most towns of the water source area in the past 10 years, with the increase in Zhashui County being most apparent. This is attributed to the Chinese Government’s policies such as quitting cultivation and returning to forest, closing hillside to facilitate afforestation and farmland construction.
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    The Raised Terrain Interpretation Based on Remote Sensing Techniques in the Three Lakes Area of the Qaidam Basin
    QI Xiao-ping, ZHANG You-yan, MA Da-de, WANG Shi-hong, YU Shi-yong, LI Zhao-zhou
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 77-82.   DOI: 10.6046/gtzyyg.2012.01.14
    Abstract   HTML   PDF (5882KB) ( 1001 )
    The Quaternary biogas in the Three Lakes area of the Qaidam Basin is characterized by authigenetic self-stored reservoirs, short burial time, weak tectogenesis and slight stratigraphic deformation. There are a lot of synsedimentary inherited low amplitude structures in Quaternary strata caused by the stable tectonic stress within the study area. The seismic prospecting work is encountered with the problem that it is difficult to discover low amplitude structures and recognize thin-layer sand bodies. The absence of effective traps which can be provided for the exploration is the key trouble which has hindered the breakthrough of the natural gas exploration in this area. It is urgent to consider new exploration methods and thinking for natural gas exploration. Considering the inherited evolution character of the structures between the Earth’s surface and the depth, the authors utilized the high precision remote sensing technique to interpret and map the Earth’s surface so as to find out the structure on the Earth’s surface. The new high resolution remote sensing data were utilized to interprete the raised terrain in combination with the survey of the landform and the integrated evaluation, and the results provide fairly detailed ground support for the selection of exploration targets in the Three Lakes area.
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    The Identification of Grassland Types in the Source Region of the Yarlung Zangbo River Based on Spectral Features
    SUN Ming, SHEN Wei-shou, XIE Min, LI Hai-dong, GAO Fei
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 83-89.   DOI: 10.6046/gtzyyg.2012.01.15
    Abstract   HTML   PDF (1765KB) ( 1284 )
    With the Landsat5 TM images of the source region of the Yarlung Zangbo River as the datum source,according to the different features of spectral combination of the grassland,and in combination with the 1:1 000 000 vegetation type map as well as DEM and NDVI data,the authors set up the rules of grass identification and conducted researches on grass recognition based on decision tree classification. Some conclusions have been reached: 1 Due to difference in habitat types,good results of identifying grass can only be achieved by using different spectral combination features; 2 Compared with traditional supervised classification,the decision tree classification based on spectral combination features has higher precision of identification,the overall classification accuracy has been improved by 15.4% and the Kappa coefficient has been increased by 0.225; 3 In the region with elevation ranging from 4 400 m to 5 000 m,the grassland area of Orinus thoroldii is the largest,followed by the mixed meadow of Kobresia humilis and Kobresia pygmaea,and then by the bush of Caragana versicolor and Potentilla fruticos, with Kobresia littledalei having the smallest area.
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    The Extraction of Water Body Information from TM Imagery Based on Water Quality Types
    CHEN Lei, DENG Ru-ru, CHEN Qi-dong, HE Ying-qing, QIN Yan, LOU Quan-sheng
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 90-94.   DOI: 10.6046/gtzyyg.2012.01.16
    Abstract   HTML   PDF (943KB) ( 1661 )
    The lightness values of three types of water, i.e. ordinary, eutrophic and seriously polluted, and vegetation in the shadow of the hill were analyzed in this paper. The results show that the lightness value of TM4 is lower than that of TM3 for ordinary water, whereas things are opposite for vegetation in the shadow of the hill; the eutrophic water contaminated by phytoplankton has strong reflection in TM4, and seriously polluted water has strong absorption in visible band, which the lightness value of TM4 is higher than that of TM3. Thus the eutrophic and polluted water couldn’t be distinguished from vegetation in the shadow of the hill by comparison between TM3 and TM4. According to the extraction method of classification of water quality type the spectral characteristics of the water,the authors set up the thresholds to distinguish various types of water quality, vegetation in the shadow of the hill and other ground objects,and extracted the water distribution information from TM imagery quickly,accurately and efficiently.
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    The Interpretation of the Land Form of Sinus Iridum on the Moon Based on the Roughness
    XI Xiao-xu, LIU Shao-feng, WU Zhi-yuan, WEI Wei, JIAO Zhong-hu, LI Li
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 95-99.   DOI: 10.6046/gtzyyg.2012.01.17
    Abstract   HTML   PDF (1170KB) ( 2566 )
    The planetary surface roughness is the record of erosion, deposition, uplift and other geological processes on the planetary surface, and hence serves as a prediction for the geological age of the planetary surface. In this paper, twelve profiles were selected in the horizontal direction of the Sinus Iridum in the moon, and several parameters of roughness of those profiles were studied. Some results have been obtained: 1The average of RMS height along the profile 1 km in length is about 3m. In addition, within the research scale selected in this paper (0.2~3 km), the slope of Sinus Iridum area does not exceed 2?. This means that the surface of Sinus Iridum is relatively smooth. 2Hurst exponent of Sinus Iridum is mainly concentrated from 0.5 to 0.78, which means that the surface morphology is rather homogeneous. 3Low latitude areas(lower than 44.3癗)have relatively high Hurst exponent (from 0.6 to 0.8), and high latitude areas(higher than 44.3癗)usually have lower Hurst exponent (from 0.5 to 0.8). 4The roughness may be used as a means to determine the relative geological age.
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    Remote Sensing Monitoring of Water Erosion Desertification in the Three Gorges Area
    TONG Li-qiang, LI Li
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 100-103.   DOI: 10.6046/gtzyyg.2012.01.18
    Abstract   HTML   PDF (1891KB) ( 1450 )
    Dynamic monitoring of water erosion desertification in the Three Gorges Area was carried out by using remote sensing technology so as to find out the dynamic changes of water erosion desertification. The water erosion desertification information was extracted through the interpretation of two phase aviation orthoprojective images taken separately in 2003 and 2009, and then the changes of water erosion desertification in those years were summarized. The monitoring results show that the condition of water erosion desertification in the Three Gorges Area was improved obviously. The Three Gorges Area began storing water in 2003, and the water reached its highest level of 175 m in 2009. All kinds of water erosion desertification was reduced obviously, especially the moderate desertification. As for the improving degree, the mild water erosion desertification has been improved most evidently.
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    GIS
    The Main Crop Diseases and Pests Meteorology Level Forecast System Based on GIS
    LI Xuan, GUO An-hong, ZHUANG Li-wei
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 104-109.   DOI: 10.6046/gtzyyg.2012.01.19
    Abstract   HTML   PDF (1586KB) ( 1489 )
    In order to improve the forecast capability of the meteorology level forecast system for different crop disease and pest meteorology levels and makes it fit for regional scale, this paper extended several crop disease and pest forecast models and applied them to different regions according to the consistency of crop planting areas, and also established a new division standard of weather rating. The system is developed by using VB.net and GIS component and on the basis of the data platform composed of agriculture meteorology database constructed by Oracle9i and geographic spatial database. This system was used to forecast seven disasters, i.e., the grassland locusts existent in northern China, the corn borer existent in northeast China, the planthopper existent south of the Yangtze River, the helicoverpa armigera existent in Huang-Huai (Yellow River-Huaihe River) plain, the wheat stripe rust existent in Huang-Huai plain, the wheat scab existent in Jiang-Han plain, and the crop blast fungus existent in southwest China, and achieved relatively satisfactory results.
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    "The Results of Remote Sensing Application of National Mineral Resource Potential Assessment" Column
    A Comprehensive Study of Applying Remote Sensing in the Evaluation of Mineral Resource Potential: A Case Study of the Remote Sensing Application in Shanxi Province
    LI Song, LI Hai-ying
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 111-119.   DOI: 10.6046/gtzyyg.2012.01.20
    Abstract   HTML   PDF (7102KB) ( 1477 )
    With the theory of regional geology and mineralization as the basis,the authors summarized the relationship between large-scale regional faults and mineralization,and put forward a regional prospecting model of remote sensing based on interpretation and study of remote sensing information composed of ore-controlling linear structure elements and circular structure elements,color tone anomalies,prospecting criteria and near-ore wall rock alterations. On such a basis,the minimum areas of mineral prediction are delineated as the further prospecting targets. These results will provide important clues and basis for the potential assessment of mineral resources,and will lay a foundation for future remote sensing geological work in Shanxi Province.
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    The Remote Sensing Prospecting Information Extraction and Mineral Resources Prognosis in the Banqiao Rare Earth Mineral Deposit
    ZHANG Qin-yu, ZHANG Deng-rong, HUANG Guo-cheng, ZHU Jun
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 120-126.   DOI: 10.6046/gtzyyg.2012.01.21
    Abstract   HTML   PDF (3806KB) ( 1232 )
    In this paper, the prospecting information of the rare earth resources on Earth’s surface was extracted by analyzing the metallogenic regularity and geological remote sensing features of the study area. Firstly,the distribution of geomorphic units of Qedl was interpreted based on SPOT imagery and slope map obtained from DEM data. Then,the distribution of characteristic minerals closely related to rare earth deposits such as kaolin,sericite and chlorite was extracted by using remote sensing alteration anomaly extraction methods in the study area. At last,the potential rare earth ore districts were predicted by using overlap analysis of geomorphic units of Qedl as well as slope and abnormal extraction results. A comparison with the results of geological and geochemical survey shows that the remote sensing methods proposed in this paper are effective and reliable in prognosis of rare earth mineral distribution at the scale of 1:50 000 and can provide useful suggestions for more detailed potential evaluation of rare earth mineral resources.
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    Remote Sensing Quantitative Forecast of the Potential of Ion Adsorption Type Rare Earth Resources:Land Form Research Based on SPOT 5 Data
    WANG Geng-ming, HUANG Tie-lan, ZHU Jun-feng, XU Yan-jun
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 127-131.   DOI: 10.6046/gtzyyg.2012.01.22
    Abstract   HTML   PDF (4167KB) ( 1775 )
    In order to probe into the remote sensing ore indicating significance of land form,the authors adopted 546 sheets of 1:50 000 standard maps of Guangdong Province as the study area,used the data of SPOT 5 remote sensing to carry out the extraction and precise orientation of the land form. As a result, the land form type and distribution characteristics of the study area were detected,and effective ore indicating information of land form was obtained. The result has certain reference and guidance value for prospecting and exploiting rare earth resources in Guangdong Province.
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    The Extraction of Fault Structure and Wall Rock Alteration Remote Sensing Information in Ningxia
    ZHANG Yong-ting, ZHANG Xiao-dong, LIU Zi-zeng, ZHANG Yong-jie, ZHANG Hui-juan
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 132-136.   DOI: 10.6046/gtzyyg.2012.01.23
    Abstract   HTML   PDF (2546KB) ( 1378 )
    In order to evaluate mineral resources in Ningxia, the authors used ETM+ satellite remote sensing data to extract linear and circular structure information of Ningxia by means of manual visual interpretation and computerization. At the same time, information of iron and hydroxide radical anomalies was collected by the principal components analysis and spectral-angle mapper. In combination with regional geological structure conditions, the authors made an integrated analysis of remote sensing linear character, circular structure and distribution characteristics and anomaly information in Ningxia and its indicative significance for mineral resources. The results show that remote sensing linear structure is almost identical with regional structure distribution of Ningxia, and the remote sensing linear structure and anomaly information can be employed to act as the main forecast factors for mineral resource potential evaluation in Weining North Mountain and Helan Mountain. The identified prospecting targets have provided an ideal indicative reference for mineral exploration, and some targets has already been verified by exploration results.
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    The Delineation of Potential Ore-prospecting Areas in the Zijinshan Copper-Gold Deposit and Its Outskirts by Using Remote Sensing and Other Means
    LI Ming
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 137-142.   DOI: 10.6046/gtzyyg.2012.01.24
    Abstract   HTML   PDF (3715KB) ( 1781 )
    In order to appraise the resources potential of the Zijinshan copper-gold deposit and its outskirts in Shanghang County of Fujian Province,the authors interpreted linear structures,ring structures,volcanic structures and intrusive rocks on the basis of 1:50 000 geological map and by using Landsat ETM+ image acquired in 2001. In combination with remote sensing anomaly information and data of geophysical exploration,geochemical exploration and heavy concentrates, six potential favorable areas for further ore prospecting were delineated within an area of 936 km2,thus providing some new clues for further ore-prospecting work.
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    Metallogenic Prognosis Significance of Circular Structures in Porphyry Copper Deposits: A Case Study of Yulong-Malasongduo Area
    ZHANG Ting-bin, BIE Xiao-juan, WU Hua, HU Zi-hao, LI Jian-li, YANG Xue
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 143-149.   DOI: 10.6046/gtzyyg.2012.01.25
    Abstract   HTML   PDF (2388KB) ( 1057 )
    Porphyry is an important basis for delineating the smallest prospecting area in resource potential evaluation of the porphyry copper deposit. Studies show that many remote sensing circular structures have a relationship with the magmatic activity (including porphyry). In order to evaluate ore potential of the porphyry copper deposit rapidly, the authors made ore prognosis in the Yulong-Malasongduo porphyry copper ore district by using remote sensing technique. Firstly, on the basis of ETM+ images, the circular structure indicators were established. Then, the circular structures in the study area were interpreted, the distribution characteristics of circular structures were summarized,and the deductive indicators of porphyry from circular structures were determined. The results show that circular structures can offer an important clue to delineating the smallest prospecting area of the porphyry copper deposit.
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    Characteristics of Remote Sensing Alternation Anomalies from ASTER in the Duobuza Porphyry Copper Deposit
    HU Zi-hao, TANG Ju-xing, ZHANG Ting-bin, WU Hua, XU Zhi-zhong, BIE Xiao-juan
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 150-154.   DOI: 10.6046/gtzyyg.2012.01.26
    Abstract   HTML   PDF (1682KB) ( 1551 )
    Using the "mask and directed principal component analysis" approach,the authors extracted the remote sensing alternation anomalies of the Duobuza porphyry copper deposit on the basis of ASTER data. The characteristics of alteration anomalies,the correlation between alteration anomalies and surface alteration and the relationship between alteration anomalies and known ore bodies were preliminarily discussed in this paper. The results show that the alteration anomalies extracted by ASTER data are relatively satisfactory and can provide the remote sensing basis for delineation of the smallest prognostic target within the forecasting work area of the Duolong copper deposit in the mineral resource potential assessment of Tibet.
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    The Application of ASTER Data to Extracting Alteration Anomaly Information in Skarn Sn Deposits: A Case Study of the Maguan-Dulong Sn Deposit in Southeast Yunnan
    WANG Wei, ZHANG Shi-tao, YIN Guang-hou, XU Dong
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 155-159.   DOI: 10.6046/gtzyyg.2012.01.27
    Abstract   HTML   PDF (3764KB) ( 1294 )
    The extraction of alteration mineral information by using the multi-spectral remote sensing data plays an important role in search for mineral deposits. In this paper,the authors have described the alteration anomaly information of calcitization,dolomitization and chloritization extracted from the Maguan-Dulong Sn deposit in southeast Yunnan by using ASTER data. The alteration anomaly information is well consistent with the field geological survey. The results show that the alteration information extracted from ASTER is effective in the potential assessment of mineral resources and the ore-prospecting prediction.
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    The Relationship Between Remote Sensing Structures and Gold Deposits and Ore-prospecting Prognosis in Southwest Guizhou
    KUANG Zhong, LONG Sheng-qing, ZENG Yu-ren, HUANG Xin-xin, WU Xiao-fang
    REMOTE SENSING FOR LAND & RESOURCES. 2012, 24 (1): 160-165.   DOI: 10.6046/gtzyyg.2012.01.28
    Abstract   HTML   PDF (4510KB) ( 2170 )
    Remote sensing images show that there are two types of stratigraphic layers in southwest Guizhou Province. One is of carbonate platform facies and the other is of groove basin facies. Au deposits occur in short-axis anticlines, dome structures and their associated faults. The positive circular structures and circular images interpreted by remote sensing are of great importance to Au mineral prospecting. In addition,the Au deposits also have certain relationship with the hidden fractures interpreted by remote sensing. Based on the idea mentioned above and using the fused image produced by the data sources of ETM+ and GeoEye data,the authors carried out the remote sensing interpretation and analysis of the structures,and delineated the prognostic areas for Au mineral prospecting.
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