乌江流域水域面积变化的气候效应

Climate Effects of Water Area Change in Wujiang River Basin

为了研究乌江流域水域面积变化的气候效应,采用水体指数法提取研究区2000年~2018年流域水域内气温、降水量、相对湿度、风速等数据。结果显示,2000年~2018年水域面积增加,气温、降水量冬季增加、夏季减少,相对湿度、风速冬季、夏季都增加。从而说明,水域能调节气温、带来降水、增湿、增加风速,对冬季气温有正效应、对夏季气温有负效应;对冬季降水量有正效应、对夏季降水量有负效应;对冬季、夏季相对湿度有正效应;对冬季、夏季风速有正效应。

In order to study the climatic effects of water area change in Wujiang River Basin,the water body index method is used to extract the water basins in study area from 2000 to 2018,and the temperature,precipitation,relative humidity and wind speed in these basins are counted.The results show that,from 2000 to 2018,the water area is increased,the temperature and precipitation are increased in winter and decreased in summer,and the relative humidity and wind speed are all increased in winter and summer.So it can be concluded that,(a)the water area can regulate the temperature,bring precipitation,and increase humidify and wind speed;(b)the water area has positive effects on winter temperature and precipitation,and negative effects on summer temperature and precipitation;and(c)the water area has positive effects on relative humidity in summer and winter and wind speed in winter and summer.