干旱区生态环境知识资源中心(Arid): 干旱区高山湿地生态风险时空变化---以巴音布鲁克自然遗产地为例

Arid

	干旱区高山湿地生态风险时空变化---以巴音布鲁克自然遗产地为例
其他题名	Analysis of Ecological Risk Temporal-spatial Change in Arid Alpine Wetland-A Case Study of Bayanbulak World Natural Heritage Site
	时卉; 杨兆萍; 韩芳; 石天戈; 王昭国
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2015
卷号	32 期号:3 页码:614-621
中文摘要	以2000年和2010年巴音布鲁克自然遗产地TM遥感影像、巴音布鲁克气象站2000-2007年降水、气温数据,建立生态风险指数,比较分析2000年和2010年生态风险区的时空演变特征,定量分析生态风险区变化的距离及方向。结果表明:①2000-2010年,研究区高覆盖度草地面积变化幅度最大,减少了39.63%,平原旱地、河沼、高覆盖度草地的分离度增大,中覆盖度草地抗扰度增加; ②研究区平均生态风险值随时间变化逐渐降低,约4成面积的生态风险略有上升; ③高生态风险区由单中心集聚向多中心分散变化,面积变化由差异化向一致性转化; 各生态风险区重心变化强烈,由东北方向向西南方向转移,方向角度变化最大的为高生态风险区; ④气候变化和人为活动影响研究区的生态风险变化,气候变化导致局地景观格局和物种生境发生变化; 人类活动影响景观格局的分布,并在短时期内影响动植物的生境以及景观格局。
英文摘要	Ecological risk was defined as the probability and possibly danger of the adverse ecological effects of the normal function in populations,the ecosystem and the entire landscape elements. It had a major significance for studying the spatial-temporal feature and influencing factors of wetland ecological risk,estimating the wetland risk areas to protect the ecological environment,to make a policy response on the process of the wetlands environmental management. This paper used ecological risk index (ERI) ,semi-variable function space analysis to study the spatial-temporal evolution of wetland ecological risk at the arid cold climates background in Bayanbulak world natural heritage site,Hejing County,Xinjiang. The data sourced from TM remote sensing image of Bayanbulak area in2000 and 2010,precipitation and temperature data from 2000 to 2007,survey and some public data in Hejing County. This paper offered some reference in Ecological Security Alarm of heritage site,wetland protection policy and rational development of animal husbandry. The results show that: ① study area landscape structure had changed,high coverage grassland area decreased by 39.63% with the most change in all classes. The low coverage grassland patch number decreased,shaped large connected to the whole area. Fragmentation index of dry land,river,marsh,high coverage grassland reduced but separation degree increased. Interference degree in middle coverage grassland increased. All those change in landscape caused by overgrazing in this area. ② The ERI was decreased overall but local increased about 40%. The study area was divided into five categories by ERI. The highest ERI region dispersed from a single center concentration to the multi-center distribution,and the acreage decreased34.01 square kilometers. The higher ERI region presented discrete distribution with the acreage increasing 222.74 square kilometers. The most middle ERI region was changed to higher ERI region,and the acreage of lower ERI region and lowest ERI region had little change. ③ The gravity center of all five ecological risk regions was moved from east to west. The distance of gravity migration was different,among lower ERI region was moved longest. ④ Climatic factors and human activity factors were the main driving forces for ecological risk index change in the study area. The climate change affects ERI indirectly by changing the hydrological characteristics of the wetland landscape types,plant and animal habitat area in the study area. Grazing,tourism and policy activities of human activities affected the pattern of landscape in small and medium scale. The policy factors changed the spatial pattern of the landscape types,improved the habitats of plants and animals,and the ecological environment in a short period of time.
中文关键词	湿地 ; 景观格局 ; 生态风险 ; 时空演变 ; 巴音布鲁克 ; 新疆
英文关键词	wetland landscape pattern ecological risk spatial-temporal change Bayanbulak Xinjiang
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:5433770
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232723
作者单位	中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	时卉,杨兆萍,韩芳,等. 干旱区高山湿地生态风险时空变化---以巴音布鲁克自然遗产地为例[J]. 中国科学院新疆生态与地理研究所,2015,32(3):614-621.
APA	时卉,杨兆萍,韩芳,石天戈,&王昭国.(2015).干旱区高山湿地生态风险时空变化---以巴音布鲁克自然遗产地为例.干旱区研究,32(3),614-621.
MLA	时卉,et al."干旱区高山湿地生态风险时空变化---以巴音布鲁克自然遗产地为例".干旱区研究 32.3(2015):614-621.