生态学杂志2012，Vol.31Issue(8)：2082-2090,9.
基于GIS的长江三峡水库消落带生态类型划分及其特征
GIS-based division of ecological types and their characteristics of water-level-fluctuating zone in the Three Gorges Reservoir of Yangtze River
摘要
Abstract
By using GIS technology, and taking water level change, bank slope of reservoir, and small scale geomorphology as the environmental evaluation indicators, the water level elevation-slope and spatial geo-morphological maps of the Three Gorges Reservoir were drawn, based on the digital topographic map, and, through overlay analysis, the ecological types of water-level-fluctuating zone (WLFZ) in the Reservoir were classed. The ecological types of the WLFZ could be classified into 6 classes and 12 subclasses, including perennial submerged WLFZ (gentle slope and steep slope) , periodic submerged WLFZ (gentle slope and steep slope) , perennial non-submerged WLFZ (gentle slope and steep slope) , island WLFZ (submerged and non-submerged ) , lake basin-estuary-reservoir bay-reservoir tail WLFZ (lake basin, estuary, bay, and reservoir tail) , and valley WLFZ. The periodic submerged WLFZ, perennial non-submerged WLFZ, and lake basin-estuary-reservoir bay-reservoir tail WLFZ together accounted for 82. 2% of the entire WLFZ area, indicating that the three main ecological types should be artificial ecological restoration-based and supplemented by natural recovery, while the perennial submerged WLFZ, island WLFZ, and valley WLFZ accounted for 17.8% of the entire WLFZ area, which should be natural recovery-based and supplemented by artificial ecological restoration.关键词
GIS/长江三峡水库/水位高程/库岸坡度/小尺度地形地貌Key words
GIS/Three Gorges Reservoir/ water level elevation/bank slope/small scale geomorphology.分类
资源环境引用本文复制引用
雷波,杨春华,杨三明,周玉,张晟,王业春..基于GIS的长江三峡水库消落带生态类型划分及其特征[J].生态学杂志,2012,31(8):2082-2090,9.基金项目
国家水体污染控制与治理科技重大专项(2009ZX07104-003)资助. （2009ZX07104-003）
