水土保持学报2009，Vol.23Issue(5)：113-117,5.
不同生态修复措施下水库水源涵养区土壤粒径分布的分形特征
Fractal Features of Soil Particle Size Distribution on Water Source Conservation Areas under Different Measures of Ecological Restoration
摘要
Abstract
Based on the soil fractal theory and method, this paper studied the fractal features of soil particles size distribution and the relationships between soil fractal dimensions and physical-chemical properties including soil bulk density, organic matter content and porosities under different measures of ecological restoration on water source conservation areas of Taolinkou reservoir. The study can provide reference for the scientific evaluation of forest soil structures, and the reasonable selections and allocation models of ecological restoration measures on water source conservation areas of the reservoirs during ecological restoration. The results indicate that:(l) The soil particle size distributions and fractal features are different under different measures of ecological restoration,and the fractal dimensions range from 2. 709 9 to 2. 778 4. The fractal dimension of soil particle size distribution of barren slope exclusion measures is highest, followed by barren slope afforestation, open forest replanting, forest land closing measures(plantations), gentle slope terrace exclusion measures, forest land closing measures (natural secondary forests), steep slope exclusion measures. (2) There is a significant difference between fractal dimension and grain contents. The correlation is extremely significantly positive between fractal dimension and clay;and the correlation is negative between fractal dimension and soil particle size ranged from 3 mm to 0. 005 mm;but positive between fractal dimension and soil particle size ranged from 0. 005 mm to 0. 001 mm;especially, extremely significantly positive between fractal dimension and soil particle size ranged from 0. 001 mm to 0 mm. (3) There exists a significant positive correlation between fractal dimension and soil bulk density;but significant negative correlation between fractal dimension and organic matter content;especially,extremely significantly negative correlation between fractal dimension and non-capillary porosity and total porosity;while the correlation is not obvious between fractal dimension and capillary porosity.关键词
生态修复/水源涵养区/粒径分布/分形维数/桃林口水库Key words
ecological restoration/water source conservation areas/particle size distribution/fractal dimen-sion/Taolinkou reservoir分类
农业科技引用本文复制引用
王富,贾志军,董智,李红丽,甄宝艳,孙明高,张卫平..不同生态修复措施下水库水源涵养区土壤粒径分布的分形特征[J].水土保持学报,2009,23(5):113-117,5.基金项目
河北省水利科学技术研究计划(2008-23) （2008-23）
山东省科技厅重点攻关项目(SDSP2005-0410-06) （SDSP2005-0410-06）
