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马安河流域原是湖南省隆回县水土流失最严重的地区之一,从1980年冬开始进行综合治理试验,经过五年的努力,流域内已基本控制水土流失,森林植被得到恢复,生态环境逐步改善,使农业生产出现了新的局面。 马安河流域位于隆回县东北部,属花岗岩低山区,地势北高南低,节理发育,花岗岩占总面积的98.3％,风化层厚达数米以至十数米,风化层成分主要为高岭土及石英,土质松散,粘土成分少,粘结力差,属砂土和砂壤土。河流发源于望云山南麓,向西流入辰水河,全长7公里,坡降16‰。治理前水土流失面积为10800亩,总面积的57.3％。
The original project was one of the most serious soil erosion in Longhui County, Hunan Province. Starting from the winter of 1980, the comprehensive management trial was conducted. After five years of hard work, the water and soil loss has been basically controlled in the basin, forest vegetation has been restored, and the ecological environment Gradually improved, so that a new situation in agricultural production. The Ma’an River Basin is located in the northeast of Longhui County. It belongs to a low-lying granite area. Its terrain is high in the north and high in the south, and its joints are developed. The granite accounts for 98.3% of the total area. The weathered layer is several meters to ten meters thick. Quartz, loose soil, less clay, poor adhesion, is a sandy soil and sandy loam. The river originated in the southern foot of Wang Yunshan, west of Chen Shuihe into the river, a total length of 7 km, down 16 ‰. Before the management of soil erosion area of 10,800 acres, the total area of 57.3%.