赣南地区水土流失风险评价

Risk Assessment of Soil Erosion in Southern Jiangxi

根据通用水土流失方程(ULSE)提取7个风险指标因子,建立了基于因子分析的水土流失风险评价模型,对赣南地区土壤侵蚀风险进行空间区划。结果表明,该模型量化了不同各因子对水土流失的影响,符合区域实际,与传统方法相比,具有简易可操作优点。空间统计显示,赣南地区水土流失风险变异性强,各风险强度分布依次为:低风险(36.13%)、中风险(49.61%)、高风险(14.26%),其中以中度风险为主。

According to the Universal Soil Erosion Equation(ULSE),seven risk index factors were extracted,and a soil erosion risk assessment model based on factor analysis was established to spatially partition the soil erosion risk in southern Jiangxi.The results show that the model quantifies the impact of each factor on soil erosion,conforms to the actual situation of the region,and has the advantage of convenience compared with traditional methods.Spatial statistics show that the risk of soil erosion in southern Jiangxi has strong variability,and each risk intensity destitution is as follows:low risk(36.13%),medium risk(49.61%),and high risk(14.26%),of which moderate risk is dominant.