For forest watershed and shrub watershed, the annual mean runoff coefficient was affected by mean annual precipitation, mean annual evapotranspiration and mean slope grade.
2
对黄河河源区多年平均和雨季降水量、年际径流量进行分析。
The annual average and rain season precipitation and yearly runoff of the source regions of the Yellow River were analyzed.
3
将1956 ~ 2000年平均降水量作为多年平均年降水量,全区多年平均年降水量为666.1毫米。
According to 45 years (1956-2000) date of precipitation in the area, the annual mean precipitation is 666.1mm.