气候变化领域集成服务门户(CCPortal): The changes of vegetation cover in Ejina Oasis based on water resources redistribution in Heihe River

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DOI	10.1007/s12665-011-1013-0
	The changes of vegetation cover in Ejina Oasis based on water resources redistribution in Heihe River
	Wang Yaobin; Feng Qi; Si Jianhua; Su Yonghong; Chang Zongqiang; Xi Haiyang
发表日期	2011
ISSN	1866-6280
EISSN	1866-6299
卷号	64 期号:7
英文摘要	The Ejina Oasis (EO), located in arid northwest China, is a typical arid area in the world. The ecosystem in the oasis has become worse since the 1990s. However, it began to improve after the Chinese government took the mandatory measure to redistribute the water in Heihe in 2000. To understand this change, the remote sensing images in 1990, 2000 and 2006 were selected, and exertion related Land Use/Cover Change (LUCC) model was employed. Results showed that: (1) non-vegetation cover was the main body of the vegetation cover in oasis, showing a trend of increase at the beginning and diminution later, while low, medium and high vegetation cover was the other way around; (2) the area of low, medium and high vegetation cover in 2006 was less than that in 1990; the status and trend index P (t) of oasis vegetation cover was 0.62 in 1990-2000, which means that the oasis ecosystem of Ejina was getting worse and was under an unbalanced status; P (t) was 0.27 in 2000-2006 indicating that the oasis ecosystem was restored obviously and the whole system tended to be balanced; (3) all of these changes should be attributed to the water resources redistribution in Heihe River, which played a leading role, as well as the measures and relevant policies taken by the local government, which promoted the rapid recovery of the medium and high vegetation.
关键词	Ejina Oasis Vegetation cover LUCC Water resources redistribution in Heihe River Northwest China
学科领域	Environmental Sciences & Ecology; Geology; Water Resources
语种	英语
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
来源期刊	ENVIRONMENTAL EARTH SCIENCES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111631
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang Yaobin,Feng Qi,Si Jianhua,et al. The changes of vegetation cover in Ejina Oasis based on water resources redistribution in Heihe River[J]. 中国科学院西北生态环境资源研究院,2011,64(7).
APA	Wang Yaobin,Feng Qi,Si Jianhua,Su Yonghong,Chang Zongqiang,&Xi Haiyang.(2011).The changes of vegetation cover in Ejina Oasis based on water resources redistribution in Heihe River.ENVIRONMENTAL EARTH SCIENCES,64(7).
MLA	Wang Yaobin,et al."The changes of vegetation cover in Ejina Oasis based on water resources redistribution in Heihe River".ENVIRONMENTAL EARTH SCIENCES 64.7(2011).