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岚县地处汾河上游。总面积1514km~2,境内水土流失严重。普明河、岚城河、上明河三条河流在县城汇集成岚河。每年都要将大量的泥沙注入汾河水库,全县汾河流域有17个乡镇,259个自然村,面积1183km~2,占全县总面积的77.5%,流失面积130万亩,占流域总面积的74.2%。多年平均侵蚀总量596.4万吨,占全县侵蚀总量的89.4%,水土流失严重是造
Lan County is located in the upper reaches of Fenhe. The total area of 1514km ~ 2, serious soil erosion. Puming River, Arashiyama, Shangming three rivers in the county together into Lan River. Every year, a large amount of sediment should be injected into Fenhe Reservoir. There are 17 villages and 259 villages in the Fenhe River basin, covering an area of 1183km ~ 2, accounting for 77.5% of the total area of the county with a loss area of 1.3 million mu, 74.2% of the area. The average annual erosion of 5.964 million tons, accounting for 89.4% of the total erosion of the county, soil erosion is serious