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一、治理现状 王茂沟是韭园沟中游左岸的一条支沟,流域面积5.97km~2,从1953年开展水土保持工作,到1986年已完成治理面积6029亩,占总面积的67.32％,占已利用土地面积的75.79％。其中工程措施为1868亩,占总面积的20.86％,占治理面积的30.98％;生物措施4161亩,占总面积的46.46％,占治理面积的69.02％。 二、治理效益 (一)拦蓄效益 1.蓄水效益 据观测,该流域治理初期的5年间,汛期年平均降水总量为343.38mm,其中产
I. Status quo of governance Wangmaogou is a branch ditch on the left bank of the middle reaches of Jiuyuangou. The drainage area is 5.97km ~ 2. From 1953, soil and water conservation work was carried out. By 1986, 6029 mu of governance area had been completed, accounting for 67.32% of the total area. Accounting for 75.79% of the used land area. Among them, the engineering measures are 1868 mu, accounting for 20.86% of the total area, accounting for 30.98% of the area under management; and the biological measures are 4161 mu, accounting for 46.46% of the total area and accounting for 69.02% of the total area under management. Second, the effectiveness of management (A) interception benefits 1. Water storage benefits According to observation, the initial five years of the basin management, the average annual precipitation in the flood season was 343.38mm, its production