干旱区生态环境知识资源中心(Arid): 重要生态功能区生态安全评价方法初探----以沙漠化防治区为例

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	重要生态功能区生态安全评价方法初探----以沙漠化防治区为例
其他题名	A Preliminary Study on Ecological Security Assessment Methods for Important Ecological Function Areas: ACase Studyin Desertification Control Regions
	迟妍妍; 饶胜; 陆军
来源期刊	资源科学
ISSN	1007-7588
出版年	2010
卷号	32 期号:5 页码:804-809
中文摘要	重要生态功能区是保障国家和地区生态安全的重要区域, 目前尚无针对重要生态功能区的生态安全评价方法研究. 本文依托沙漠化防治区建立基于PSR框架的评价指标, 以及基于RS与GIS技术的空间评价方法, 旨在探索建立一套适用于重要生态功能区生态安全空间评价的可行的评价模式. 重要生态功能区生态安全评价的关键是准确衡量区域主要生态服务功能的强弱, 指标选择以反映区域主要生态服务功能和人类活动影响为原则. 以沙漠化防治区为例, 植被生长、土地覆被类型、土壤理化性质和土壤侵蚀等情况是衡量防风固沙功能强弱的重要因素, 而指标的动态变化才能反映人类活动对生态环境的影响, 选择能够表征植被生长、植被退化演变、土壤粒径和土壤侵蚀的四类因子作为主要评价因子, 应用不同年份的变化值进行评价, 使评价结果具有空间性、动态性及可操作性, 为区域生态环境保护和管理提供基础
英文摘要	Important ecological function areas play a prominent role in protecting primary ecosystem service functions to ensure ecological security in a region and a country. It appears that less work has been done concerning ecological security assessment methods for important ecological function areas. This study made an attempt to establish a set of evaluation modes and criteria for ecological security assessment across important ecological function areas in desertification control regions by constructing an index system based on the Pressure-State-Response(PSR)framework and on a spatial evaluation method relying on remote sensing(RS)and geographic information system(GIS).The key of ecological security assessment for important ecological function areas is to appropriately measure the strength of primary ecological service functions. Ecological service functions reflect not only the status of ecological security, but also the extent to which human manages and controls ecology. As s result, reflecting primary ecosystem service functions and impacts of human activities on ecology were the principles in the index design. It was considered that vegetation growth, land cover types, soil properties and soil erosion were the most critical factors indicating sand-fixing function over desertification control regions. The four types of major indicators were then constructed, consisting of the index system. These indices contains vegetation growth, change in landscape patterns, soil particle sizes and degree of soil erosion, Normalized Difference Vegetation Index(NDVI), deviation of present landscapes from the original one, fine sand proportion and soil erosion intensity. In addition, pressure and response indicators were selected as auxiliary evaluation factors to evaluate the influence of social pressures and responses on the eco-environment. Since the impact of human activities on ecology was reflected in a dynamic change in such indicators, the authors utilized the NDVI derived from satellite images for different years to retrieve the ecological conditions and the impact of human activities. Ecological security over the important ecological function areas was graded on a pixel-by-pixel basis. The spatial, dynamic and feasible ecological security assessment results would provide a basis for regional ecological protection and management. Assessment criteria and integrated gradation of ecological security designed in this study are adaptive to be adjusted in terms of local ecological and social situations for other regions. The proposed assessment mode can also be applied to other types of ecological function areas through taking into account other primary factors which can depict local ecological characteristics and primary ecological service functions
中文关键词	重要生态功能区 ; 沙漠化防治区 ; 生态安全 ; 评价方法
英文关键词	Important ecological function areas Desertification control regions Ecological security Assessment method
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:3953375
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226106
作者单位	环境保护部环境规划院, 北京 100012, 中国
推荐引用方式 GB/T 7714	迟妍妍,饶胜,陆军. 重要生态功能区生态安全评价方法初探----以沙漠化防治区为例[J],2010,32(5):804-809.
APA	迟妍妍,饶胜,&陆军.(2010).重要生态功能区生态安全评价方法初探----以沙漠化防治区为例.资源科学,32(5),804-809.
MLA	迟妍妍,et al."重要生态功能区生态安全评价方法初探----以沙漠化防治区为例".资源科学 32.5(2010):804-809.