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一、基本情况 连城县水土流失面积约2.3万公顷,占总土地面积25.9万公顷的9％。紫色土区水土流失面积达1.5万公顷,占水土流失总面积的65.4％。紫色土区的侵蚀以文亨乡一带最为典型,其特点是土层浅薄,干旱贫瘠,侵蚀切沟发育,土壤流失严重。据调查,该区沟壑密度达1.3～2.3km/km~2,植被覆盖度10～15％,树龄6年、10年的老头松树根部裸露分别为2.9±2.2cm、10.3±4.17cm,年平均土壤侵蚀模数达8300t/km~2。严重的水土流失,给这一地区的工农业生产带来巨大危害。 为了治理紫色土区的土壤侵蚀,连城县水土保持办公室于1983、1984年春在文亨乡
First, the basic situation Liancheng County, about 23,000 hectares of soil erosion, accounting for 9.9% of the total land area of 259,000 hectares. Purple soil erosion area of 15000 hectares, accounting for 65.4% of the total area of soil erosion. Purple soil erosion to Wenheng Township is the most typical area, which is characterized by shallow soil, barren aridity, erosion and development of cut ditch, serious soil erosion. According to the survey, the density of gully in this area is 1.3 ~ 2.3km / km ~ 2, the coverage of vegetation is 10 ~ 15%, the age of 6 years, the root of 10-year old pine are 2.9 ± 2.2cm, 10.3 ± 4.17cm respectively, Soil erosion modulus of 8300t / km ~ 2. Serious soil erosion has brought great harm to the industrial and agricultural production in this area. In order to control purple soil erosion area, Liancheng County Soil Conservation Office in 1983, the spring of 1984 in Wenheng Township