三工河流域气候、水文变化及其影响

选取三工河流域内的山区和平原区40 a来气候资料和流域内三条河流20 a来径流资料，对气候和径流资料进行计算和相关性分析，结果表明:山区和平原区气温总体都呈上升趋势，90年代是升温幅度最大的年代，冬季气温升高幅度最大；山区和平原区降水整体呈增湿趋势，80年代增加显著，秋季是山区降水增多的季节而平原区降水增加最多的是夏季；三条河流径流量年内分配比较集中，主要出现在汛期，春冬两季径流量很少，90年代较80年代径流量减少，减少310.9×10⁴m³；夏季的降水是影响流域各季节的径流量主要季节，季节气温对流域的径流量变化影响不大。

Change of Climate and Hydrology in the Sangong River Basin and Their Impact

Based on 40 years climate materials of the mountainous and plain area, 20 years runoff materials of the three rivers in the Sangong River Basin, calculating and correlation analyzing the climate and runoff materials, the main results are as follows: the temperature of the mountainous and plain area shows a rising trend, the 1990s is the largest rising range of the temperature, and the winter is the largest rising range of the temperature in the seasons;the precipitation of the mountainous and plain area shows an increasing trend, the 1980s increases markedly, the autumn has the most precipitation in the mountainous area but the summer has the most precipitation in the plain area;the runoff of three rivers is centralized in the year and mainly appears in flood season, the runoff is little in winter and spring, the runoff was reduced from the 1980s to the 1990s and was reduced by 310.9×10⁴m³;the precipitation in summer has much influence on the runoff of every seasons in the basin, but the season temperature changes has little influence on the runoff of the basin.