1980-2015年黄河流域降雨侵蚀力时空变化分析

范俊甫, 何惠馨, 郭兵

Temporal and Spatial Variations of Rainfall Erosivity in Yellow River from 1980 to 2015

FAN Junfu,HE Huixin,GUO Bing

表2 四区、五区年降雨侵蚀力重心迁移轨迹

Tab. 2 Track changes of the gravity center migration of annual rainfall erosivity in Zone Four and Zone Five

区域 年份 经度 纬度 迁移方向 迁移距离/km 迁移范围/km2 四区 1980 109°20′589″ 35°49′13″ 1987 109°34′59″ 35°53′58″ 北偏东63.79° 22.56 626.61 1994 109°50′09″ 36°01′34″ 北偏东54.70° 26.65 588.60 2001 109°7′34″ 35°50′3″ 南偏西68.27° 66.48 1601.46 2008 109°21′14″ 35°53′10″ 北偏东70.60° 21.04 743.60 2015 109°14′01″ 35°47′54″ 南偏西44.56° 14.71 860.04 五区 1980 111°28′39″ 34°53′40″ 1987 111°26′04″ 34°52′37″ 南偏西61.02° 4.25 686.86 1994 111°36′18″ 34°54′59″ 北偏东70.50° 15.59 1059.25 2001 111°18′51″ 34°51′15″ 南偏西70.32° 26.66 641.47 2008 111°25′53″ 34°53′33″ 北偏东62.01° 11.33 1018.82 2015 111°09′45″ 34°34′26″ 南偏西64.76° 25.59 905.96