干旱区生态环境知识资源中心(Arid): 贵州夹岩水利枢纽区域景观生态风险评价研究

Arid

	贵州夹岩水利枢纽区域景观生态风险评价研究
其他题名	Study on Landscape Ecological Risk Assessment of Jiayan Water Conservancy Regions in Guizhou
	任金铜; 莫世江; 陈群利; 骆强; 王志红
来源期刊	环境科学与技术
ISSN	1003-6504
出版年	2018
卷号	41 期号:4 页码:182-189
中文摘要	为揭示水利工程建设对典型喀斯特石漠化生态脆弱区域景观生态风险的影响,基于3S技术、景观生态学和生态风险评价理论构建景观生态风险评价模型,以贵州夹岩水利枢纽区52个乡镇为评价单元,对研究区1995-2015年间景观生态风险时空变化特征进行分析,结果表明:(1)研究区内建设用地、林地景观类型面积持续增加,水域景观类型面积呈增加趋势,总体生态环境保持较好。 (2)研究时段内景观破碎化程度整体偏低,人为因素对景观斑块的破碎化程度干扰较小;水域景观类型的分离度指数最大,受到人类活动干扰程度最大,特别是夹岩水利枢纽工程的实施。(3)20年间处于高生态风险区和低生态风险区乡镇变化不大,各乡镇区域景观生态风险变化主要集中在中等生态风险区、较低生态风险区和较高生态风险区的相互转化。(4)研究区不同时段各乡镇间的区域景观生态风险水平具有显著的自相关,在空间上存在空间集聚效应,区域景观生态风险指数空间分布均以高-高聚集和低-低聚集类型为主。
英文摘要	The study aims at revealing the impact of water conservancy construction on landscape ecological risk of the typical ecologically fragile areas of Karst rocky desertification. Based on 3S technology, landscape ecology and ecological risk assessment theory, the landscape ecological risk assessment model was constructed. Taking 52 towns in Jiayan water conservancy of Guizhou as estimation units, the temporal and spatial patterns of landscape ecological risk in the study area were analyzed during 1995-2015. The results show that the landscape type and area of construction and forest continued to increase, and the water landscape type and area increased, the overall ecological environment was better. During the study period, the degree of landscape fragmentation is low and the human activities have low degree influence to the fragmentation of the landscape spots; water landscape classes have the largest separation index, indicating that it has the greatest degree of interference with human activities, especially with the implementation of Jiayan water conservancy project. In the past 20 years, towns which locate in high ecological risk area and low ecological risk area have little change, and the landscape ecological risk is concentrated in medium ecological risk regions. Lower ecological risk areas and higher ecological risk areas mutually transform to each other. In different time different towns’ landscape ecological risk has a significant autocorrelation, there is a spatial agglomeration effect in space, the spatial distribution of regional ecological risk index is based on high-high aggregation and low-low aggregation type.
中文关键词	夹岩水利枢纽 ; 景观格局 ; 景观生态风险 ; 时空演化
英文关键词	3S Jiayan water conservancy 3S landscape pattern landscape ecological risk spatial-temporal evolution
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:6234510
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237866
作者单位	贵州工程应用技术学院, 贵州省教育厅生物资源开发与生态修复特色重点实验室, 毕节, 贵州 551700, 中国
推荐引用方式 GB/T 7714	任金铜,莫世江,陈群利,等. 贵州夹岩水利枢纽区域景观生态风险评价研究[J],2018,41(4):182-189.
APA	任金铜,莫世江,陈群利,骆强,&王志红.(2018).贵州夹岩水利枢纽区域景观生态风险评价研究.环境科学与技术,41(4),182-189.
MLA	任金铜,et al."贵州夹岩水利枢纽区域景观生态风险评价研究".环境科学与技术 41.4(2018):182-189.