| 2001-2010年甘肃省植被覆盖的时空变化 |
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| 引用本文： | 崔丹丹,张耀南,陈广庭.2001-2010年甘肃省植被覆盖的时空变化[J].中国沙漠,2014,34(4):1161-1166. |
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| 作者姓名： | 崔丹丹 张耀南 陈广庭 |
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| 作者单位： | 1. 中国科学院寒区旱区环境与工程研究所, 甘肃 兰州 730000;2. 中国科学院大学, 北京 100049;3. 甘肃省资源环境科学数据工程技术研究中心, 甘肃 兰州 730000 |
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| 摘 要： | 基于长时间序列MODIS影像数据，通过并行计算方法获得甘肃省2001-2010年NDVI序列，利用均值法、最大值合成法、线性回归、Moran’s I指数分析方法，研究甘肃省10年间植被覆盖程度的动态变化、NDVI空间格局以及各生态区NDVI变化趋势。结果表明：甘肃省植被分布差异明显，从南到北，植被覆盖逐渐减少，省内植被覆盖总体呈增长趋势，各生态区植被覆盖差异较大，少数生态区内植被退化，整个甘肃省以及各生态区域内都呈现NDVI聚集的空间格局。
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| 关 键 词： | 甘肃 生态区NDVI Moran’s I指数 |
| 收稿时间： | 2014-04-17; |
Spatial and Temporal Variation of NDVI in Gansu,China during 2001-2010 Based on Remote Sensing |
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| Cui Dandan,Zhang Yaonan,Chen Guangting.Spatial and Temporal Variation of NDVI in Gansu,China during 2001-2010 Based on Remote Sensing[J].Journal of Desert Research,2014,34(4):1161-1166. |
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| Authors: | Cui Dandan Zhang Yaonan Chen Guangting |
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| Institution: | 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Scientific Data Engineering Technology Research Center of Resources and Environment in Gansu Province, Lanzhou 730000, China |
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| Abstract: | Based on a long sequence of MODIS image data, we obtained 2001 to 2010 NDVI sequence of Gansu Province by parallel computing. This paper use mean, maximum value composite, linear regression, Moran'I analysis method to study vegetation cover dynamic changes of level, NDVI spatial pattern as well as the ecological regions NDVI trends of Gansu Province in the period 2001-2010. The results showed that the overall vegetation cover trend of Gansu Province is good. What is more, the vegetation cover of various ecological regions is quite different. The spatial pattern of NDVI in Gansu Province and ecological regions show positive spatial autocorrelation. |
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| Keywords: | Gansu ecological region NDVI Moran’I |
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