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河北省张家口地区永定河流域水土流失严重,开展重点治理以前,年均土壤侵蚀模数达4500t/km~2。水土流失不仅制约着该区经济的发展,而且还直接影响着官厅水库的运用和首都的供水、防洪。1983年以前,全区完成综合治理面积737km~2,尚有水土流失面积9272km~2。自1983年列为全国八片水土保持重点治理区后,经过九年的集中、连续、综合治理,共完成治理措施面积2977km~2,年均治理速度达3.6％。第一期工程开展治理的136条小流域,其中的76条,总面积2000km~2,水土流失面积1500km~2。1991年已全部竣工并按部颁标准通过验收。开展重点治理取得了显著成效;1983～1990年,水土保持可减少土壤流失量1314万t,占同期官厅水库入库泥沙总量的52％;截至1991年底止,人均占有基本农田0.2hm~2,人均占有粮食由治理前的137kg提高到540kg,人均经济收入由179元增加到418元。
The soil and water loss in Yongding River Basin in Zhangjiakou, Hebei Province is serious. Before carrying out key control, the annual average soil erosion modulus reaches 4500 t / km ~ 2. Soil and water loss not only restricts the economic development of the district, but also directly affects the utilization of the Guanting Reservoir and the capital’s water supply and flood control. Before 1983, the region completed comprehensive management of an area of 737km ~ 2, there is still an area of 9272km ~ 2 soil erosion. Since 1983, it has been listed as one of the eight key areas for soil and water conservation in China. After nine years of centralized, continuous and comprehensive management, a total area of 2977km ~ 2 has been completed and the annual average treatment rate has reached 3.6%. The first phase of the project to carry out the management of 136 small watershed, of which 76, with a total area of 2000km ~ 2, soil erosion area of 1500km ~ 2. 1991 has been completed and tested according to ministerial standards. From 1983 to 1990, soil and water conservation could reduce the soil loss by 13.14 million tons, accounting for 52% of the total sediment storage in the Guanting Reservoir. As of the end of 1991, per capita basic farmland was 0.2hm ~ 2, per capita food from 137kg before treatment to 540kg, per capita income increased from 179 yuan to 418 yuan.