摘要
生态足迹和生态承载力理论为水利工程对生态环境影响的定量化评价提供了有效的途径。根据"等效替代"方法计算表明:三峡工程防洪、发电、航运作用分别减少生态足迹389.07万hm2、1850.17万hm2、4.99万hm2。同时库区淹没和工程占地、渔业减产、土壤渍害和次生盐碱化增加生态足迹30.82万hm2、18.79万hm2、43.77万hm2。正负效益合计增加生态承载力2 150.85万hm2,证明了三峡工程在长江流域可持续发展中的重要地位。
The theory of ecological footprint and ecological capacity provides a new way to evaluate the influence of water conservancy project on environment. According to the equivalent method, the Three Gorges Project can decrease ecological footprint in Yangtze River basin as much as 21508.5× 10^3ha, among which the ecological footprint decreased by flood control, waterpower and water transport are respectively 3 890.7 × 10^3ha, 18501.7×10^3 ha and 49.9 ×10^3 ha, the ecological footprint increased by reservoir inundation and construction land use, fisher production loss and soil water logging and secondary salinization are respectively 308.2 × 10^3 ha, 187.9 × 10^3 ha and 437.7 × 10^3 ha, which proves the importance of the Three Gorges Project on the sustainable development in Yangtze River basin.
出处
《水力发电学报》
EI
CSCD
北大核心
2008年第5期130-134,152,共6页
Journal of Hydroelectric Engineering
关键词
环境水利
三峡工程
长江流域
生态承载力
生态足迹
environmental hydraulics
Three Gorges Project
Yangtze River basin
ecological capacity
ecological footprint
