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	基于沙漠化程度的生态安全格局评价
其他题名	Evaluation of Ecological Security Pattern based on the Desertification Degree
	张宁; 常学礼; 李秀梅; 孙小艳
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2010
卷号	30 期号:2 页码:247-253
中文摘要	以内蒙古奈曼旗为研究区域,以乡镇为评价尺度,在凸显沙漠化作用的基础上,运用综合评价指数法对该地区的生态安全格局进行了综合评价.在权重确定中,在一级层次上分为沙漠化土地和非沙漠化土地:其中,沙漠化土地权重赋值为0.7;非沙漠化土地赋值0.3.在二级层次上分为流动沙丘、林地等12种土地利用/覆被类型,不同类型的权重采用评价时间尺度内土地利用动态度来确定.结果表明:在1975-1985年、1985-1995年到1995-2005年这3个时期间,奈曼旗的生态安全状况经历了极不安全-安全-较安全的过程,生态安全综合评价的平均指数分别为-4.06、2.56和1.06.其中从1985-1995年到1995-2005年这段期间,生态安全状况趋向恶化,但是从1975-2005年,奈曼旗整体的生态安全水平呈好转的趋势.
英文摘要	Using the method of synthetical evaluation index and taking township for research-scale, this article has comprehensively evaluated the ecological security pattern based on the desertification degree in Naiman County. Evaluation procedure was divided into two levels. For the first level there were desertification land and un-desertification land, their weight values were 0.7 and 0.3 respectively. The second level included twelve land use/cover types such as mobile dune, woodland etc. These weight values were determined by the dynamic degree of land use/cover types during evaluation periods. The evaluation results showed that the ecological security situation had undergone alternation from extremely unsafe to safe and to slight safe during period from 1975-1985, to 1985-1995, and to 1995-2005, respectively, and the ecological security synthetic indices were -4.06, 2.56 and 1.06 respectively. The situation of ecological security pattern was worse between 1985-1995 and 1995-2005, but was improved during 1975-2005 in Naiman County.
中文关键词	生态安全格局 ; 生态安全评价 ; 沙漠化 ; 奈曼旗
英文关键词	ecological security pattern evaluation of ecological security desertification Naiman County
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:3843022
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225964
作者单位	鲁东大学,地理与规划学院, 烟台, 山东 264025, 中国
推荐引用方式 GB/T 7714	张宁,常学礼,李秀梅,等. 基于沙漠化程度的生态安全格局评价[J],2010,30(2):247-253.
APA	张宁,常学礼,李秀梅,&孙小艳.(2010).基于沙漠化程度的生态安全格局评价.中国沙漠,30(2),247-253.
MLA	张宁,et al."基于沙漠化程度的生态安全格局评价".中国沙漠 30.2(2010):247-253.