北京市水库湿地演变驱动力分析(英文)

被引:3
作者
宫兆宁 [1 ]
李洪 [2 ]
赵文吉 [3 ]
宫辉力 [4 ]
机构
[1] Base of the State Laboratory of Urban Environmental Processes and Digital Modeling
[2] Key Laboratory of D Information Acquisition and Application of Ministry
[3] Key Laboratory of Resource Environment and GIS of Beijing
[4] College of Resource Environment & Tourism, Capital Normal
关键词
reservoir wetland; driving force; Logistic regression model; Beijing;
D O I
暂无
中图分类号
X37 [自然资源合理开发与环境保护];
学科分类号
摘要
The reservoir wetland, which is the largest artificial wetland in Beijing, constitutes one of the important urban ecological infrastructures. Considering two elements of natural environment and socio-economy, this paper established the driving factor indexing system of Beijing reservoir wetland evolution. Natural environment driving factors include precipitation, temperature, entry water and groundwater depth; social economic driving factors include resident population, urbanization rate and per capita GDP. Using multi-temporal Landsat TM images from 1984 to 2010 in Beijing, the spatial extent and the distribution of Beijing reservoir wetlands were extracted, and the change of the wetland area about the three decade years were analyzed. Logistic regression model was used to explore for each of the three periods: from 1984 to 1998, from 1998 to 2004 and from 2004 to 2010. The results showed that the leading driving factors and their influences on reservoir wetland evolution were different for each period. During 1984-1998, two natural environment indices: average annual precipitation and entry water index were the major factors driving the increase in wetland area with the contribution rate of Logistic regression being 5.78 and 3.50, respectively, and caused the wetland growth from total area of 104.93 km 2 to 219.96 km 2 . From 1998 to 2004, as the impact of human activities intensified the main driving factors were the number of residents, groundwater depth and urbanization rate with the contribution rate of Logistic regression 9.41, 9.18, and 7.77, respectively, and caused the wetland shrinkage rapidly from the total area of 219.96 km 2 to 95.71 km 2 . During 2004-2010, reservoir wetland evolution was impacted by both natural and socio-economic factors, and the dominant driving factors were urbanization rate and precipitation with the contribution rate of 6.62 and 4.22, respectively, and caused the wetland total area growth slightly to 109.73 km 2 .
引用
收藏
页码:753 / 768
页数:16
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