干旱区生态环境知识资源中心(Arid): 西北地区生态环境现状和演化规律研究

Arid

	西北地区生态环境现状和演化规律研究
其他题名	Analysis on the present situation and evolution of the ecological environment in northwest china
	唐克旺 1; 王研 1; 王芳 1; 陈子丹 2
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2002
卷号	25 期号:2 页码:132-138
中文摘要	利用20世纪70年代和90年代两个时段西北内陆地区的土地利用资料和遥感信息，对西北内陆地区的生态环境景观的20年的变化趋势进行了评价。通过评价，定量分析了西北内陆地区生态环境的总体变化趋势，研究了人工绿洲和天然绿洲的平衡比例关系以及与生态环境总体的内在关系。这项研究对研究和确定生态环境保护合理阈值，维持绿洲稳定，保障当地社会经济的长远发展具有重要意义。
英文摘要	The ecosystems in the inland watersheds in arid and semiarid areas are consisted of the artificial oases, natural oases, ecotones between the oases and deserts, and deserts surrounding the oases. In northwest China it is arid, the ecological environment is vulnerable, the area of the oases is small, the sand deserts, Gobi deserts, and saline or alkaline land are distributed extensively. The social and economic development is mainly limited in the oases. In fact, the sustainable development in northwest China is the long-term development of the oases, and the protection of the ecological environment is that of the oases. In the recent decades, however, the artificial oases are rapidly expanded but the natural ones shrunk with the rapid social and economic development in these watersheds. In order to maintain the stability of the oases and achieve a sustainable development, a balance between the artificial and the natural oases should be kept. Based on the remote sensing information of the 1970’s and 1990’s and a lot of ground investigation data and by using GIS spatial analysis, in this paper the general situation of the ecological environment in the inland watersheds in northwest China is assessed, and the evolution and main forced factors of the ecology are analyzed. The results show that some watersheds have been excessively developed and the desertification has been sped up since recent 20 years. It is considered that the area of the natural oases should be maintained for one third of the total area of the oases so as to ensure their general stability. In the construction of the ecological environment in future, it is suggested to regard the protection of the natural oases and the natural vegetation as the key, increase the dynamics in the exploitation, utilization and management of water resources while withdrawing from farming to planting trees and grasses and controlling excessive grazing, and restore and maintain the ecological groundwater level so as to provide the sufficient moisture conditions for the growth of the natural vegetation.
中文关键词	西北地区 ; 生态环境 ; 演化规律
英文关键词	ecological zone evolution oasis Northwest China
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:988711
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203166
作者单位	1.中国水利水电科学研究院水资源研究所, 北京 100044, 中国; 2.水利部遥感技术应用中心, 北京 100044, 中国
推荐引用方式 GB/T 7714	唐克旺,王研,王芳,等. 西北地区生态环境现状和演化规律研究[J],2002,25(2):132-138.
APA	唐克旺,王研,王芳,&陈子丹.(2002).西北地区生态环境现状和演化规律研究.干旱区地理,25(2),132-138.
MLA	唐克旺,et al."西北地区生态环境现状和演化规律研究".干旱区地理 25.2(2002):132-138.