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老帽山位于复县、新金县和盖县交界处,经纬位置为北纬38°58′,东经122°16′,海拔高程848米。1981年7月27—28日,老帽山周围骤降特大暴雨,引起山洪爆发,产生了滑坡、崩塌和泥石流,水土流失极为严重。南北沟流域有70％的耕地被冲毁;沟间、河滩、阶地边缘及坡脚下的大部分房屋被冲走或水毁,农、工、副业生产遭到很大破坏。本文根据地处老帽山西侧之李官河上游的南、北沟测定成果及调查资料,对老帽山区水土流失作初步探讨,旨在为土石山区水土流失的防治提供依据.
Laohao Mountain is located at the junction of Fuxian County, Xinjin County and Gaixian. The latitude and longitude positions are 38 ° 58 ’north latitude, 122 ° 16’ east longitude and 848 meters above sea level. July 27-28, 1981, plunging around the Laomao Mountain resulted in torrential rains causing flash floods, resulting in landslides, collapses and debris flows, resulting in serious soil erosion. 70% of the cultivated land in the north-south ditch basin has been destroyed; most of the dwellings, beaches, terraces and most of the houses at the foot of the slope have been washed away or destroyed, and the production of agricultural, industrial and sideline products has been greatly damaged. Based on the results of the north and north ditch determination and survey data located in the upstream of LiGuanHe on the west side of LaoMao Mountain, this paper makes a preliminary study on the soil and water loss in LaoMao Mountain area, aiming at providing basis for prevention and control of soil erosion in mountain area.