干旱区生态环境知识资源中心(Arid): 民勤县景观组分的生态敏感性分析

Arid

	民勤县景观组分的生态敏感性分析
其他题名	Ecological sensitivity analysis of landscape components in Minqin County
	潘慧 1; 刘学录 1; 潘韬 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2016
卷号	30 期号:12 页码:146-152
中文摘要	以甘肃省民勤县为研究区,通过景观结构指数的变化幅度构建景观组分类型敏感性指数,对近20年各景观组分类型的生态敏感性进行系统研究,分析了两个主要生态过程对生态敏感性的影响,并分析其变化过程。结果表明: 1)研究区景观类型以沙地和草地为主导,分布比较集中,连通程度较高,其它斑块如耕地、建设用地等6种景观镶嵌于其中,道路和河流是研究区的两种廊道类型; 2)水域是区域内敏感性最强的景观组分类型; 3) 2000年以前,民勤县景观生态系统受耕地开垦和水利设施的建设这一生态过程的影响,人类活动对景观的干扰强度较大,各景观组分类型的敏感性也较大,2000年以后,生态过程转变为植树造林、禁牧、关井压田、流域综合治理、农业节水改造,发展低耗水经济作物等,各景观组分类型的敏感性总体上在减小。整体而言,民勤县景观组分的敏感性呈下降趋势,生态环境在改良。
英文摘要	We selected Minqin County in Gansu province as research area to build sensitivity index of landscape component type by the magnitude of change landscape structure index. We researched ecological sensitivity of landscape components nearly 20 years and analyzed the two main ecological processes affecting the ecological sensitivity and change process. The result showed that: (1) Sandy desert and grassland were the largest landscape types in the landscape ecosystem. Other patches embedded in that. Roads and rivers were the corridors. (2) Water was the most sensitive type of landscape components. (3) Before 2000,Minqin County landscape ecosystem were affected by reclamation of farmland and construction of water facilities. Disturbance of human activities on the landscape was large. Sensitivity of various landscape components was also larger. After 2000,ecological processes changed into afforestation,grazing,shut pressure fields,comprehensive watershed management,agricultural water - saving transformation,the development of low water crops,etc. On the whole,the sensitivity of the various landscape components was reduced. Overall,the sensitivity of landscape components declined,the ecological environment was improved.
中文关键词	敏感性 ; 景观组分 ; 民勤县
英文关键词	sensitivity landscape components Minqin County
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5874729
来源机构	中国科学院地理科学与资源研究所 ; 甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234400
作者单位	1.甘肃农业大学资源与环境学院, 兰州, 甘肃 730070, 中国; 2.中国科学院地理科学与资源研究所, 北京 100101, 中国
推荐引用方式 GB/T 7714	潘慧,刘学录,潘韬. 民勤县景观组分的生态敏感性分析[J]. 中国科学院地理科学与资源研究所, 甘肃农业大学,2016,30(12):146-152.
APA	潘慧,刘学录,&潘韬.(2016).民勤县景观组分的生态敏感性分析.干旱区资源与环境,30(12),146-152.
MLA	潘慧,et al."民勤县景观组分的生态敏感性分析".干旱区资源与环境 30.12(2016):146-152.