干旱区生态环境知识资源中心(Arid): 青海省都兰县NDVI变化及影响因子研究

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	青海省都兰县NDVI变化及影响因子研究
其他题名	Variations and Impact Factors of NDVI in Dulan County of Qinghai Province
	常进; 张克斌; 边振; 程中秋; 王黎黎; 肖红霞
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2011
卷号	31 期号:5 页码:204-207,229
中文摘要	研究植被覆盖的动态变化可以探知荒漠化的动态变化。利用青海省都兰县2000-2009年MO-DIS，NDVI数据对该区的植被动态变化进行了监测，并在此基础上对NDVI的变化与气温、降水的相关性进行了研究。结果表明，2000-2009年都兰县的NDVI总体上呈缓慢的上升趋势，上升率为0.0029/a，NDVI值年内变化具有很强的季节性，NDVI值总体水平不高，最大值仅为0.22；全县39.71%的面积植被明显改善，主要位于查查河、察汗乌苏河以及柴达木河下游的大片区域，17.74%面积出现植被退化，主要位于柴达木河中上游河岸周围的广大区域，荒漠化治理有待进一步加强。气温和降雨是影响该区植被状况的主导自然因子，5-9月的气温与NDVI极显著相关(p<0.01)，5-9月的降雨量与NDVI显著相关(p<0.05)，气温对NDVI的影响强于降水。
英文摘要	The knowledge of vegetation cover changes will provide considerable insights into the dynamic process of desertification.The study illustrated the vegetation dynamic changes in Dulan County, Qinghai Province using 2000-2009MODIS NDVI data, and on this basis, the relationship between NDVI changes with temperature and rainfall variations were investigated, providing the basic data to land use planning in alpine areas and desertification prevention and control.The results indicate that the NDVI values of the area presented a slow ascendant trend from 2000to 2009, at the rate of 0.0029/a.The NDVI values had a strong seasonal changes in a year, but the overall NDVIs were not high for the county, with the maximum value of 0.22.The vegetation condition were improved significantly in 39.71% of the area of the entire county, which mainly located in basins of Chacha river and Chahanwusu river and a large area of Qaidam river downstream.However, the vegetation degeneration was found in the upper and middle reaches of Qaidam river, accounting for 17.74% of the entire county, suggesting that the desertification control should be further strengthened.The temperature and rainfall were the two main natural factors influencing the NDVI dynamics of the county; the NDVIs correlated strongly significantly with the temperature(p< 0.01), and significantly with the rainfall amount(p<0.05)from May to September annually.The impact of the temperature on the NDVI was stronger than that of the precipitation.
中文关键词	青海省都兰县 ; 降水 ; 气温
英文关键词	NDVI Dulan County of Qinghai Province NDVI precipitation temperature
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:4346681
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227065
作者单位	北京林业大学水土保持学院, 水土保持与荒漠化防治教育部重点实验室, 北京 100083, 中国
推荐引用方式 GB/T 7714	常进,张克斌,边振,等. 青海省都兰县NDVI变化及影响因子研究[J]. 北京林业大学,2011,31(5):204-207,229.
APA	常进,张克斌,边振,程中秋,王黎黎,&肖红霞.(2011).青海省都兰县NDVI变化及影响因子研究.水土保持通报,31(5),204-207,229.
MLA	常进,et al."青海省都兰县NDVI变化及影响因子研究".水土保持通报 31.5(2011):204-207,229.