干旱区生态环境知识资源中心(Arid): 黑河中下游绿洲生态安全变化分析

Arid

	黑河中下游绿洲生态安全变化分析
其他题名	Analysis on Ecological Security Changes of the Oases in the Middle and Lower Heiher River
	杜巧玲 1; 许学工 2; 李海涛 2; 彭慧芳 2
来源期刊	北京大学学报. 自然科学版
ISSN	0479-8023
出版年	2005
卷号	41 期号:2 页码:273-281
中文摘要	在对黑河中下游5个绿洲1980s中期和2000s近期的状况开展生态安全评价的基础上,进行各个绿洲及流域的生态安全变化分析.无论是1980s中期还是近期,绿洲生态安全综合评价的结果均由中游向下游依次降低, 而近期的生态安全状况又比1980s中期有不同程度的下降,下降的幅度也是由中游向下游依次增大.在支持区域生态安全总系统的3个分系统中,与20世纪80年代中期相比,水安全和土地安全水平均明显下降,社会经济安全有所上升.在宏观气候变化的背景下,中游绿洲耕地的增加和绿洲面积的扩大使水资源供需矛盾更加突出,并对下游绿洲的生态环境造成了一定的负面影响,是导致下游绿洲萎缩,整个流域绿洲系统面积缩小、稳定性下降的重要原因.必须加强全流域水资源的调配和流域的综合管理,才能实现黑河流域的生态安全和可持续发展.
英文摘要	On the basis of assessing the ecological security for the five oases of the middle and lower Heiher River in the middle 1980s and at the beginning of 2000s, the paper analyzes the ecological security change of these oases.The integrated assessing results of the oases ecological security are reduced from the middle to the lower reaches of Heiher River in the middle 1980s and at the present. The present slate of ecological security declines more than that of 1980s. The dropping range also increases from the middle to the lower reaches. Compared with those of 1980s, water security and land security drop obviously, but social economic security rises a little within the three sub-systems. Under the background of macroscopical climate change, the cultivated land increases and oasis area enlargement in the middle reaches makes more imbalance between supply and demand of water resource, which has caused certain negative effect on the ecological environment of the oasis in lower reaches. And it is the very important reason that causes the oasis in the lower reaches diminishing, the oasis systematic area of the whole basin atrophying, and the stability declining. In order to realize the ecological security and sustainable development of the Heiher basin, it must strengthen allocation of the water resource in the whole basin and make basin comprehensive management.
中文关键词	生态安全 ; 环境变化 ; 绿洲 ; 黑河中下游
英文关键词	ecological security environment change oasis the middle and lower Heiher River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY ; ENVIRONMENTAL SCIENCES
WOS研究方向	Geology ; Environmental Sciences & Ecology
CSCD记录号	CSCD:1956658
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205900
作者单位	1.北京大学环境学院资源与环境地理系, 北京 100871, 中国; 2.北京大学环境学院资源与环境地理系, 北京 100080, 中国
推荐引用方式 GB/T 7714	杜巧玲,许学工,李海涛,等. 黑河中下游绿洲生态安全变化分析[J]. 北京大学,2005,41(2):273-281.
APA	杜巧玲,许学工,李海涛,&彭慧芳.(2005).黑河中下游绿洲生态安全变化分析.北京大学学报. 自然科学版,41(2),273-281.
MLA	杜巧玲,et al."黑河中下游绿洲生态安全变化分析".北京大学学报. 自然科学版 41.2(2005):273-281.