干旱区生态环境知识资源中心(Arid): 气候和土地利用变化对塔里木河干流区植被覆盖变化的影响

Arid

	气候和土地利用变化对塔里木河干流区植被覆盖变化的影响
其他题名	Vegetation Cover Change with Climate and Land Use Variation along Main Stream of Tarim River
	杨光华 1; 包安明2 ; 陈曦2 ; 刘海隆 2; 黄莹 2; 代述勇 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2010
卷号	30 期号:6 页码:1389-1397
中文摘要	基于遥感和地理信息系统技术,利用19982008年SPOT-VEGETATION归一化植被指数(NDVI)数据对塔里木河干流区19982007年植被覆盖的时空变化进行了监测,并从气候变化和土地利用变化双重角度分析了植被覆盖变化的原因.研究表明,塔里木河干流区植被覆盖变化经历了两个阶段:19982001年植被覆盖严重退化时期;20022007年植被覆盖度由急剧上升到缓慢下降再到持续升高时期,NDVI明显高于20世纪末期水平.塔里木河干流区植被覆盖变化存在显著的空间差异,绿洲农业灌溉区和退耕还林还草生态恢复区的植被覆盖度显著提高,天然草地植被区的植被退化严重.塔里木河干流区植被覆盖变化是气候和土地利用变化共同作用的结果.温度对植被覆盖变化的影响表现为对植被生长年内韵律的控制和秋季植被生长期的延长,年降水量的波动式上升是导致塔里木河干流区植被覆盖变化两个阶段呈现差异的主导因素
英文摘要	The RS and GIS technology were used to monitor the spatial and temporal variations of vegetation cover along the main stream of the Tarim River during the period of 19982008 based on the Normalized Difference Vegetation Index(NDVI)data of SPOT-VEGETATION with 1 km*1 km spatial resolution. The relationship between vegetation cover change and climate and land use change was analyzed. The results are as follows. The change of vegetation cover experienced two various periods:the vegetation degradation period during 19982001, when vegetation cover improved with fluctuations from2002 to 2007;the vegetation restoration period from2002 to 2007, and the NDVI level in 2007 was obviously higher than that at the end of the 21 century. There was a significant difference of the vegetation cover change between oasis and desert grassland. The vegetation cover in oasis agricultural irrigation area and ecological restoration zone improved significantly, but the NDVI of desert forest and grassland decreased severely. The change of vegetation cover was the result of interaction of climate change and land use change. The influence of temperature on vegetation cover change is presented as controlling the rule of annual vegetation growth and prolonging the growth period of vegetation. The increase of annual precipitation was the dominant factor of vegetation cover improvement. Excessive reclamation and overgrazing were the reasons of cultivated land increasing and grassland degradation, respectively
中文关键词	归一化植被指数 ; 植被覆盖 ; 气候变化 ; 土地利用变化 ; 塔里木河
英文关键词	NDVI vegetation cover climate change land use change Tarim River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4062785
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226046
作者单位	1.中国科学院新疆生态与地理研究所, 重庆市国土资源和房屋管理局矿产地质与环境地质重点实验室;;煤炭资源与安全开采国家重点实验室, 乌鲁木齐, 新疆 830011, 中国; 2.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	杨光华,包安明,陈曦,等. 气候和土地利用变化对塔里木河干流区植被覆盖变化的影响[J]. 中国科学院新疆生态与地理研究所,2010,30(6):1389-1397.
APA	杨光华,包安明,陈曦,刘海隆,黄莹,&代述勇.(2010).气候和土地利用变化对塔里木河干流区植被覆盖变化的影响.中国沙漠,30(6),1389-1397.
MLA	杨光华,et al."气候和土地利用变化对塔里木河干流区植被覆盖变化的影响".中国沙漠 30.6(2010):1389-1397.