摘要
生态需水量的正确估算是实现流域水资源科学管理、合理配置的关键前提。本文综合多种方法计算了孔雀河流域天然植被不同保育目标和保护范围下的生态需水量。结果表明:若要保护流域内的所有天然植被,每年需要最低生态需水量为4.10×10~8m^3,其中林地需水0.4×10~8m^3,草地需水3.7×10~8m^3;若仅保护重点保护区内的天然植被,则每年需生态需水量为1.91×10~8m^3,其中林地需水量0.37×10~8m^3,草地需水量1.54×10~8m^3;若实施生态输水抢救工程,以保护"抢救"保护范围的天然植被,则每年需生态输水量为1.32×10~8m^3,其中良好林地需水0.18×10~8m^3,良好草地需水1.14×10~8m^3。
Ecological water demand is the key for the water resources management. In this paper, the ecological water demands of natural vegetation for different conservation objectives and conservation areas in the Konqi River Basin were calculated by a variety of methods. The results showed： The lowest ecological water demand is 4. 10×10^8m^3 per year for protecting all the natural vegetation in the Konqi River Basin, in which ecological water demand is 0. 4×10^8m^3 for forest and it is 3.7×10^8m^3 for grass; The ecological water demand is 1.91×10^8m^3 per year if only protecting the priority protection zone, in which ecological water demand is 0. 37×10^8m^3 for forest and it is 1.54×10^8m^3 for grass; The ecological water demand is 1.32×10^8m^3 per year if rescuing the natural vegetation under the ecological water transportation project, in which ecological water demand is 0. 18×10^8m^3 for forest and it is 1.14×10^8m^3 for grass.
出处
《环境与可持续发展》
2017年第2期140-144,共5页
Environment and Sustainable Development
基金
国家科技支撑计划项目(2014BAC15B02)
中国科学院"率先行动"计划课题(TSS-2015-014-FW-2-3)
关键词
生态需水量
潜水蒸发
灌溉定额
天然植被
孔雀河
ecological water demand
diving evaporation
irrigation quota
natural vegetation
Konqi River
