干旱区生态环境知识资源中心(Arid): 基于景观格局的干旱区绿洲生态风险评价与管理以青铜峡市为例

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	基于景观格局的干旱区绿洲生态风险评价与管理以青铜峡市为例
其他题名	Ecological Risk Assessment and Its Management of Oasis in Arid Area Based on Landscape Pattern A Case Study in Qingtongxia
	韩晓佳 1; 刘小鹏 2; 王亚娟 1; 温胜强 1; 叶均艳 1
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2017
卷号	24 期号:5 页码:285-290
中文摘要	干旱区绿洲抗干扰能力弱,开展其生态风险评价具有的重要意义。以景观生态学理论为指导,选取青铜峡市作为研究对象,采用三期遥感数据,运用景观格局指数评估生态风险,并对生态风险指数进行空间化,绘制研究区2006年、2010年、2016年的生态风险空间分布图。在此基础上,结合空间统计法分析了研究区生态风险的聚集模式。结果表明:(1)研究期间,青铜峡市景观格局变化明显。耕地、水域和未利用土地的景观破碎度增加,大斑块破碎化趋势明显,区域的景观稳定性降低。景观格局指数的空间分布显示景观破碎度、损失度较高区分布在人口和经济活动聚集的绿洲核心区。(2)研究区的生态风险时空变化差异较大。其中高风险区面积减少最为显著,并随着风险等级之间的转换,中等风险区成为研究区的主要风险类型。生态风险呈现缓和趋势。(3)研究区的生态风险存在显著空间正相关,低低和高高聚集是主要的生态风险聚集模式,低值为高值包围或高值为低值包围的空间孤立点表现不显著,高低风险之间严重分化是研究区亟待解决的问题。
英文摘要	It is of great significance to carry out ecological risk assessment because of the weak anti-interference ability of oasis in arid area.Based on the theory of landscape ecology,we selected Qingtongxia City as the research sample,and used remote sensing data in three periods,and the landscape pattern index to assess the ecological risk,and achieved the spatialization of index,as well as made the spatial distribution maps of ecological risk in 2006,2010 and 2016.On the basis above,the accumulation mode of ecological risk in the study area was analyzed by spatial statistics.The results showed that:(1)during the study period,the change of landscape pattern was obvious in Qingtongxia City;the fragmentation of cultivated land,water area and unused land increased,the fragmentation trend of large patches was obvious,and the landscape stability decreased;the spatial distribution of landscape pattern index show that the landscape fragmentation and the loss degree of the higher areas distributed in the oasis core area which was gathered by population and economic activity;(2)the spatial and temporal changes of ecological risk in the study area were different; among them,the reduction of high risk area was the most remarkable,and with the conversion of the risk grade,the medium risk area became the main risk type;ecological risk presented the mitigative trend;(3)there was prominent spatial positive correlation between the ecological risks in teh study area,thelowlow’andhighhigh’accumulations were the main ecological risk accumulation mode,the spatial outliers that low values were surrounded by high values or high values were surrounded by low values were not significant, the serious differentiation between high and low risks is the urgent problem to be solved in the study area.
中文关键词	景观格局 ; 生态风险 ; 干旱区绿洲 ; 风险管理 ; 青铜峡市
英文关键词	landscape pattern ecological risk arid area oasis risk management Qingtongxia City
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:6038998
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236710
作者单位	1.宁夏大学资源环境学院, 银川, 宁夏 750021, 中国; 2.宁夏大学资源环境学院, 宁夏(中阿)旱区资源评价与环境调控重点实验室, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	韩晓佳,刘小鹏,王亚娟,等. 基于景观格局的干旱区绿洲生态风险评价与管理以青铜峡市为例[J]. 宁夏大学,2017,24(5):285-290.
APA	韩晓佳,刘小鹏,王亚娟,温胜强,&叶均艳.(2017).基于景观格局的干旱区绿洲生态风险评价与管理以青铜峡市为例.水土保持研究,24(5),285-290.
MLA	韩晓佳,et al."基于景观格局的干旱区绿洲生态风险评价与管理以青铜峡市为例".水土保持研究 24.5(2017):285-290.