湿地自然保护区生态补水局地气候影响分析——以吉林西部河湖连通供水工程为例

The Local Climate Impact Analysis to Wetland Nature Reserve Ecological Water Supply——Taking the Water Supply Project of River-lake Connecting in Western Jilin Province as an Example

采用数值模拟方法和气候参数的半定量估算方法,对吉林西部河湖连通供水工程所涉及的部分行政区以及向海、莫莫格、查干湖和波罗湖等4个国家级自然保护区生态补水后的气候影响展开分析。分析结果表明:实施生态补水的4个湿地自然保护区水域面积扩大后,项目区域蒸发量变大,相对湿度上升,增加了降雨的内源影响因素,导致降雨量略有增长,湿度和降雨量的改变一定程度上有利于局地气候的改善,而生态补水后局地夏季平均气温最多下降0.53℃,下降幅度相对较小,对局地气候影响有限。

The local climate changes of some districts and four national nature reserves,Xianghai,Momoge,Chagan and Baluo lakes involved in water supply project of river-lake connecting in western Jilin Province are analyzed by numerical simulation method and semiquantitative estimation method.The results show that after the implementation of ecological water replenishment,the water surface area of four national nature wetland reserviors are enlarged.The evaporation of the entire project area becomes larger and the relative humidity rises,and increases the endogenous influencing factors of rainfall.The rainfall in the whole region will increase slightly.Changes in humidity and rainfall are beneficial to local climate improvement to some extent.After the ecological water supply,the average summer temperature in the local area decreases by 0.53℃at the most,with a relatively small decline,and limited impact on the local climate.