水土保持学报2012，Vol.26Issue(4)：178-182,230,6.
喀斯特植被恢复过程中的土壤分形特征
Fractal Features of Soil During the Process of Vegetation Recovery in Karst Region
摘要
Abstract
Calculating the fractal dimensions based on the weight of particle size distribution, fractal dimen- sion of soil particle, soil water-stable aggregates and micro-aggregates during the vegetation restoration process in Karst region were studied and the relationship between soil physical and chemical properties and fractal dimension was analyzed. The results showed that the content of soil water-stable aggregates（~0. 25 mm） increased and soil structure improved during the vegetation restoration; the fractal dimension of particle size distribution were dramatically positive correlated with available N（P~0.05）, and little correlated with other factors; the fractal dimension of soil micro-aggregates and soil water-stable aggregates were negatively correlated with organic matter, total N and available N, dramatically positive correlated with soil structural destruction ratio. The results indicated the fractal dimension of soil miero-aggregates and soil water-stable aggregates could reflect the characteristics of soil physical and chemical properties and be used as a quantita- tive index for the assessment of soil structure during the vegetation recovery. Slope farmland had worst soil structure, and returning farmland to forest could be beneficial to soil and conservation in Karst region.关键词
喀斯特/植被恢复/土壤/分形维数Key words
Karst vegetation restoration soil fractal dimension分类
农业科技引用本文复制引用
王佩将,戴全厚,丁贵杰,程富东..喀斯特植被恢复过程中的土壤分形特征[J].水土保持学报,2012,26(4):178-182,230,6.基金项目
国家自然科学基金项目 （）
国家“十一五”科技支撑计划项目 （）
贵州省教育厅重点项目 （）
贵州省优秀青年科技人才培养计划项目 （）
国家“十二五”科技支撑计划项目 （）
