According to the information of land use, vegetation and slope of Fujian province in 2007, which was extracted by combining "3S" techniques with field investigation, the distribution map of soil and water loss in Fujian was compiled, and the core regions of soil and water loss in Fujian were defined by the convex hull model. The results showed that the core regions of soil and water loss in Fujian included "four large districts" (Tingjiang, Jinjiang, Jiulongjiang and Saijiang district) and "six small patches" (involving Shaowu, Shunchang, Nanping, Gutian, Luoyuan, Datian, Dehua and Yongtai). Comparing the defined core regions of soil and water loss by the author with the sorious regions and key controlling regions of soil and water loss divided by the former researchers, the general scope of "four large districts" was consistent with the previous research results, but the core regions were more detailed and specific than the previous results.%以福建省为研究区域,结合"3S"技术与野外调查,提取土地利用、植被覆盖度和坡度分级等信息,生成2007年水土流失现状图,并采用凸壳模型进行水土流失核心区划分.结果表明:福建省水土流失核心区共有"四大片"(汀江片、晋江片、九龙江片与赛江片)和"六小片"(涉及邵武、顺昌、南平、古田、罗源、大田、德化和永泰等县、市、区).将水土流失核心区与前人划定的严重水土流失区和重点治理区相比较,"四大片"的主体范围较为一致,但是严重水土流失区和重点治理区以行政区域为单元,划分指标为各类水土流失面积占土地总面积的比例,而水土流失核心区直接确定水体流失严重的地域,更加详细具体.
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