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一、典型治理情况遂宁市市中区,地处四川盆地中部的丘陵山地,气候温和,雨量丰富,雨热同季,土壤肥沃,自然条件优越,是川中盛产粮食、棉花、油料等作物的腹心地带.但是由于降雨时间分配不均,年雨量的72%集中在5～9月降落,汛期大雨,暴雨频繁,加上地形起伏,沟谷纵横,土壤多为紫色页岩的风化母质成土,植被稀少,覆盖率仅5%左右,近百年来人口增长较快,又不适当地垦种,坡耕地增多,使水土流失加剧.据1982年省考查组综合调查,全区年平均侵蚀模数为7916.3t/km~2.水土流失带来生态失调,干旱、洪涝发生频繁,水、土、
First, the typical situation of governance Central City, Suining City, is located in the hilly mountains in central Sichuan Basin, mild climate, abundant rainfall, rain and heat in the same season, fertile soil, superior natural conditions, is rich in food in central Sichuan, cotton, oil and other crops heart However, due to the uneven distribution of rainfall, 72% of annual rainfall concentrated in May to September, rainy season heavy rains, frequent heavy rains, coupled with topographic fluctuations, vertical and horizontal valleys, soil mostly purple shale weathering mother soil, vegetation Sparsely populated, coverage is only about 5%, nearly a hundred years population growth faster, but not properly cultivated, sloping cropland increased soil erosion .According to a comprehensive survey of the provincial inspection team in 1982, the region’s average annual erosion modulus 7916.3t / km ~ 2. Soil and water loss brings about ecological imbalance, drought, frequent floods, water, soil,