干旱区生态环境知识资源中心(Arid): 基于GIS的下辽河平原地下水生态敏感性评价

Arid

	基于GIS的下辽河平原地下水生态敏感性评价
其他题名	Groundwater ecological sensitivity assessment in the lower Liaohe River Plain based on GIS technique
	孙才志 1; 杨磊 2; 胡冬玲 2
来源期刊	生态学报
ISSN	1000-0933
出版年	2011
卷号	31 期号:24 页码:7428-7440
中文摘要	从地下水系统结构特征、区域自然条件、外界压力、资源与保护和生态环境5个方面考虑，构建了下辽河平原地下水生态敏感性评价指标体系。运用GIS空间分析技术，从水量和水质两方面对下辽河平原地下水生态敏感性进行评价。结果表明：在水量敏感性方面，主要以轻度与中度敏感区为主，占研究区总面积的65.14%；在水质敏感性方面，主要以轻度和中度敏感区为主，占研究区总面积的86.56%。综合水量和水质两方面，下辽河平原地下水生态敏感性在中度敏感以上的区域面积占研究区面积的59.62%，生态敏感性较高，容易受到破坏。从空间分布来看，不敏感和轻度敏感区分布在新民一辽中平原、东部山前冲洪积平原；中度敏感区域主要分布在中部平原及西部低山地区；高度敏感和极敏感区分布在辽阳和抚顺城区、平原周围山区。
英文摘要	Groundwater systems are an important part of the world’s ecosystems, linking the lithosphere, atmosphere, hydrosphere, and biosphere. Groundwater is the dominant factor influencing vegetative community distribution patterns in the arid and semi-arid regions of Northwest China. Also, groundwater is the primary source of water for human uses in North China. With recent economic growth, the region is experiencing rapid development of its groundwater resources. The groundwater has been and is being seriously depleted and the system is displaying some unstable characteristics and vulnerabilities, which are significantly impacting the ecology of the area. Various types of sensitivity assessment are often used to study the stability of a region’s environment and ecology. A groundwater ecological sensitivity assessment can be used to facilitate protection of the environment and to encourage sustainable development of groundwater resources. This paper provides a case study of the Lower Liaohe River Alluvial Plain, which is in the most economically developed region of Liaoning Province. The area is experiencing a significant water shortage. First, groundwater ecological sensitivity and its attributes were defined. Twenty-two factors were selected to be used in constructing the assessment indicator system. These were based on five aspects of groundwater quality and quantity including:1) characteristics of the local groundwater system, 2) natural conditions in the region, 3) external pressures including human-caused pressures, 4) resources available and conservation, and 5) the local ecological environment. These factors were designed based on actual conditions of the area studied and took into account a variety of indicators including spatial scale, dominating environmental conditions, independence from other factors, sensitivity of the local groundwater resources to impacts, early warning signs of problems within the groundwater system, the cumulative impact of qualitative and quantitative factors, practicality of use factors, a need to standardize the data, and classification of various factors and impacts on ground water resources. Each factor was defined and described. The sensitivity of groundwater in relation to each factor was ranked on a scale of one to five, defined as 1) insensitive, 2) slightly sensitive, 3) moderately sensitive, 4) highly sensitive, and 5) extremely sensitive groundwater conditions. The assigned value for each indictor was determined by reviewing related standards and references.? Once the various indicators or factors were defined and standardized, a groundwater ecological sensitivity assessment in the Lower Liaohe River Alluvial Plain was carried out. First, the sensitivity of the five aspects of groundwater quality and quantity were evaluated individually by applying spatial analysis of a geographic information system and the distribution of the five factors listed above was analyzed. Second, an integrated sensitivity value was calculated using a weighted model from GIS for water quantity and water quality. For water quantity, the results show the slightly and moderately sensitive areas of water quantity dominate and comprise 65.14% of the study area. The entire study area was classified as 5.35% insensitive to water quantity issues, 40.53% slightly sensitive, 24.61% moderately sensitive, 21.64% very sensitive, and 7.87% extremely sensitive. For water quality, moderately and highly sensitive areas of water quality dominate and compose 86.56% of the study area.
中文关键词	地下水 ; 生态敏感性 ; 下辽河平原 ; GIS空间分析
英文关键词	groundwater ecological sensitivity The Lower Liaohe River Plain GIS spatial analysis
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:4394754
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226982
作者单位	1.辽宁师范大学城市与环境学院, 辽宁省自然地理与空间信息科学重点实验室, 大连, 辽宁 116029, 中国; 2.辽宁师范大学城市与环境学院, 大连, 辽宁 116029, 中国
推荐引用方式 GB/T 7714	孙才志,杨磊,胡冬玲. 基于GIS的下辽河平原地下水生态敏感性评价[J],2011,31(24):7428-7440.
APA	孙才志,杨磊,&胡冬玲.(2011).基于GIS的下辽河平原地下水生态敏感性评价.生态学报,31(24),7428-7440.
MLA	孙才志,et al."基于GIS的下辽河平原地下水生态敏感性评价".生态学报 31.24(2011):7428-7440.