福建省土壤侵蚀与综合治理

土壤侵蚀是地理环境各因子综合作用的结果。丰沛的降雨和频繁的暴雨，以及多山地丘陵的地形特征，为土壤侵蚀提供了强大的侵蚀潜在动力；抗侵蚀性较弱的地面组成物质，特别是花岗岩和紫色岩风化壳及其土壤，是造成土壤侵蚀特别严重的内在原因；而社会经济环境特点使类利用自然资源强度增加，出现了一系列土地利用不合理现象，导致其中植被破坏，是造成土壤侵蚀的决定性因子。侵蚀坡地植被的重建必须遵循地带笥和群落演替规律，着眼于

On Soil Erosion and Comprehensive Harness in Fujian Province

Soil erosion is a result of comprehensive effect of geographical environment factors. Due to an abundant rainfal land frequent rainstorm, and geographical characteristics of mountain and hills, the potential erosive dynamics of soil erosion is strong . The low resistant erosion ability of ground substance,especially in granite weathering crust and purple rock and its soil are the inner causes of severe soil erosion. The utilization of natural resource of mankind was increased due to characteristics of social and economic environment of the province. The unreasonable land utilization caused vegetation destroy, which is the key factor of soil erosion. The revegetaion on erosive slopeland should follow the succession rule of zonality and plant community and focus on the built of zonality forest system, and the local condition should be considered in developing harness, the measures of intercroping of green manure or pasture on orchards should be advocated to control soil erosion and to achieve the combination of fruit, pasture and animal husbandry to strength ecological environment construction.