Data for Use of vector method to evaluate the effect of land use and soil parent material on aggregate stability in red soil zone of Southern China

As the major limiting factor controlling soil erosion, soil aggregate stability may be closely related to land use and soil parent material in the red soil region of southern China. However, relatively few studies have been conducted to comprehensively synthesize the effects of land use and soil parent materials on the stability of soil aggregates. In view of this, in this study, soil samples of four typical land use types (natural forests, artificial forests, orchards, and slope farmland) and two parent materials (granite and slate) were collected from every 20 cm in soil depth 0-100 cm in Dawei Mountain National Forest Park and Xiaoxi National Forest Park, respectively, which are located in the subtropical red soil zone. And soil aggregate stability was determined by a new approach of vector method to calculate the vector length stability index (VLSI) and its weighted form (wVLSI).

作为调控土壤侵蚀的核心限制因子，土壤团聚体稳定性与中国南方红壤区的土地利用方式及土壤母质密切相关。然而，当前鲜有研究全面综合探讨土地利用与土壤母质对土壤团聚体稳定性的影响。鉴于此，本研究以地处亚热带红壤带的大围山国家森林公园和小溪国家森林公园为研究区域，分别在两处园区内针对4种典型土地利用类型（天然林、人工林、果园、坡耕地）与2种土壤母质（花岗岩、板岩），在0~100 cm土层中按每20 cm分层采集土壤样品。并采用基于向量法的新型测定方法，计算得到向量长度稳定性指数（vector length stability index，以下简称VLSI）及其加权形式（wVLSI）。