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为深入研究中国西南喀斯特山区土壤侵蚀空间分布特征,该文在GIS技术支撑下,以贵阳市花溪水库流域花溪区范围为研究区,将石漠化因子引入修正的通用土壤流失方程(RUSLE),进行土壤侵蚀量的计算和侵蚀等级划分,并对研究区土壤侵蚀防治措施进行了探讨。结果表明:花溪水库流域花溪区范围属于中度侵蚀,由于人类活动的干扰,侵蚀强度呈不均匀分布,人类活动频繁地方侵蚀比较严重。其中,以旱地(坡耕地)土壤侵蚀模数最大,灌草地、其他林地、疏林地、有林地次之,水田最小。
In order to further study the spatial distribution of soil erosion in the Karst mountain area of Southwest China, this paper, under the support of GIS technology, takes the Huaxi district of Huaxi reservoir basin in Guiyang as a study area, and introduces the rocky desertification factor into a modified universal soil loss equation (RUSLE) The calculation of the amount of soil erosion and the classification of the erosion level were carried out. The soil erosion control measures in the study area were also discussed. The results show that the range of Huaxi District in Huaxi Reservoir Basin is moderately eroded. Due to the disturbance of human activities, the erosion intensity is unevenly distributed, and the erosion of places with frequent human activities is serious. Among them, dryland (sloping farmland) has the largest soil erosion modulus, followed by shrub land, other forest land, sparse forest land and forested land, with the smallest paddy field.