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国土资源遥感  2014, Vol. 26 Issue (1): 167-172    DOI: 10.6046/gtzyyg.2014.01.28
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河北坝上地区植被覆盖变化遥感时空分析
孙雷刚, 刘剑锋, 徐全洪
河北省科学院地理科学研究所, 石家庄 050011
Remote Sensing based temporal and spatial analysis of vegetation cover changes in Bashang Area of Hebei Province
SUN Leigang, LIU Jianfeng, XU Quanhong
Institute of Geographical Sciences, Hebei Academy of Sciences, Shijiazhuang 050011, China
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摘要 

基于MODIS数据,采用基于像元尺度的趋势分析和稳定性分析方法,深入分析了河北坝上地区近13 a的植被变化特征。研究表明:空间分布上,坝上全区地表植被覆盖从西向东依次渐好,各分区域的季节变化特征具有明显的差异性;时间上,近13 a以来坝上大部分地区植被覆盖有改善的趋势,其中得到改善的区域占坝上总面积的51.35%,基本不变的区域占25.68%;同时,因坝上地区生态环境比较脆弱,植被生长易受自然和人为因素的干扰,植被覆盖在时间序列上的稳定性较差,坝上全区每年的NDVI最大值合成数据的变异系数Cv平均值达到14.85%,Cv<10%的区域仅占坝上总面积的15.3%。

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Abstract

Using trend analysis and stability analysis methods, the authors studied the dynamic change characteristics of surface vegetation cover in the past 13 years in Bashang Area of Hebei Province based on MODIS data. Some conclusions have been reached: In spatial distribution, the surface vegetation cover of Bashang area became better gradually from west to east and there existed remarkable differences in the seasonal variation features of sub-regions. In time, there was an improving trend in most parts of Bashang Area in the past 13 years, with the improved area accounting for 51.35% of the total area and the basically unchanged area accounting for 25.68%. However, the vegetation growth was easily affected by natural factors and human activities, and its ecological environment was relatively fragile, so the vegetation cover was unstable in the time series, the mean value of MNDVI coefficient of variance (Cv) was 14.85%, and the proportion of the area with Cv<10% was 15.3%.

Key wordsSAR image    automatic registration    Canny edge    SIFT algorithm
收稿日期: 2013-03-14      出版日期: 2014-01-08
:  TP79  
基金资助:

河北省科学院青年基金项目(编号:12137)和河北省科学院4个对接项目(编号:13130)共同资助。

作者简介: 孙雷刚(1984-),男,硕士,助理研究员,主要从事3S技术及应用研究。Email:sunleigang3s@163.com。
引用本文:   
孙雷刚, 刘剑锋, 徐全洪. 河北坝上地区植被覆盖变化遥感时空分析[J]. 国土资源遥感, 2014, 26(1): 167-172.
SUN Leigang, LIU Jianfeng, XU Quanhong. Remote Sensing based temporal and spatial analysis of vegetation cover changes in Bashang Area of Hebei Province. REMOTE SENSING FOR LAND & RESOURCES, 2014, 26(1): 167-172.
链接本文:  
https://www.gtzyyg.com/CN/10.6046/gtzyyg.2014.01.28      或      https://www.gtzyyg.com/CN/Y2014/V26/I1/167

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