文献类型： 外文期刊
第一作者： Liang, Shumin
作者： Liang, Shumin;Greene, Richard
作者机构：
关键词： geographic information system; global runoff; high-resolution; interior drainage; runoff coefficient
期刊名称：HYDROLOGY RESEARCH （ 影响因子：2.419； 五年影响因子：2.257 ）
ISSN： 0029-1277
年卷期： 2020 年 51 卷 6 期
页码：
收录情况： SCI
摘要： This paper reviews 110 years of global runoff estimation. By employing the method of ordinary least square regression on a sample region's runoff coefficient, an empirical formula of a runoff coefficient is calculated for China. Based on this empirical formula applied with a high-resolution grid of precipitation, runoff is calculated resulting in an equally high-resolution map of global runoff using a geographic information system (GIS). The main results are (1) the global total runoff volume is 47,884 km(3), (2) the average runoff depth is 359 mm, (3) the interior drainage region's runoff volume is 1,663 km(3), and (4) the average runoff depth is 58.4 mm. The results are compared with the results of the existing literature on global runoff. This study emphasizes the importance of runoff and groundwater recharge in arid and semi-arid regions where the estimation value of runoff depth is significantly increased.
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