基于3S技术的辽河河口湿地生态环境需水量研究  

Research on Eco-environmental Water Requirement in Liaohe Estuary Wetlands Based on 3S Technology

作　　者：张琬抒 周林飞[1] 成遣[1] ZHANG Wan-shu ZHOU Lin-fei CHENG Qian(College of Water Conservancy, Shenyang Agriculture University, Shenyang 110866, China)

机构地区：[1]沈阳农业大学水利学院,沈阳110866

出　　处：《节水灌溉》2017年第7期84-87,93,共5页Water Saving Irrigation

基　　金：辽宁省科学事业公益研究基金项目(2015003006);辽宁省教育厅研究项目(L20142508)

摘　　要：利用3S技术对辽河河口湿地覆被信息进行提取,为生态环境需水量计算提供数据基础。根据研究区的实际情况和生态系统特征确定生态环境需水量的计算类型和计算方法,经计算结果表明:适宜生态环境需水量为2.74亿m3/a;多年平均降雨下、75%频率下和95%频率下对应的最小生态环境需水量分别为0.78、0.94和1.10亿m3/a。为有利于水资源的优化配置,给出了它们的生态环境逐月需水过程。在缺水的情况下,最小生态需水量计算是非常重要的。The information of wetland cover in Liaohe estuary is extracted by 3S technology to provide the data base for calculation of ecoenvironmental water requirement. According to the actual situation and the characteristics of ecosystem, the calculation types and methods of water requirement of eco-environment is determined. The calculation results show that the optimum water requirement of eco-environment is 2.74×10^8m^3/a; the minimum water requirement of eco-environment are 0.78×10^8 m^3/a, 0.94×10^8 m^3/a and 1.10×10^8m^3/a, respectively, under the condition of average annual rainfall, 75% probability and 95% probability. In order to realize the optimal allocation of water resources, the progress of eco-environment water requirement month by month is given. The minimum water requirement of coo-environment is essential important in the case of water shortage.

关 键 词：辽河河口湿地 适宜生态环境需水量 最小生态环境需水量 

分 类 号：S27[农业科学—农业水土工程] P331[农业科学—农业工程]