摘要
利用分形理论对排土场人工林、耕地和草地等不同样区土壤颗粒分形特征进行研究,探讨煤炭开发对该区土壤环境的影响程度,为保护矿区土壤生态条件和恢复土壤生态功能提供科学依据.运用欧美克LS-POP（6）激光粒度分析仪测定阜新市海州露天矿排土场土地复垦区3种土地利用类型0～100 cm土层10个层次的土壤颗粒机械组成,运用土壤体积分形模型计算土壤颗粒体积分形维数D,同时测定土壤样品的理化性质.结果表明：1）不同土地利用类型对土壤分形维数影响显著,而土壤层次对土壤分形维数影响不显著;3个样区的D值在2.078 6～2.717 5之间,平均D值为2.424 1.2）不同样区平均D值表现为人工林（2.2457）＜草地（2.5024）＜耕地（2.5476）.3）研究区水解氮、全氮质量分数与土壤分形维数呈多项式曲线关系,速效钾质量分数与土壤分形维数呈对数曲线关系,排土场土壤分形维数D值与土壤全氮、水解氮、速效钾质量分数为负相关,与pH值不存在相关性.
Based on the fractal theory,we studied the fractal features of soil particles of refuse dump in different land use types,i.e.,artificial forest,agricultural land and grassland,and discussed the effect of coal exploitation on the soil environment,attempting to provide scientific basis for the protection of the ecological conditions of mining areas and restoring the ecological functions of soil.The soil particles machinery composition of 10 levels of 0-100 cm soil layer of three kinds land use types was measured in the refuse dump land reclamation area at the Fuxin Haizhou opencast mine with OMIC SCF-106 laser particle size analyzer,soil particles volume fractal dimension D was calculated with soil volume fractal model,and the physical and chemical properties of the soil sample were determined.The results showed that：1） Different land use types affected soil fractal dimension significantly,while different levels of soil had no significant impacts on the soil fractal dimension; D values of the three sample regions ranged from 2.0786-2.717 5,with an average D value of 2.424 1.2） The order of the average value of D in different sample regions was artificial forest （2.245 7） ＜ grassland （2.502 4） ＜ farm land （2.547 6） ;3） There was a polynomial curve relationship among the hydrolyzable nitrogen,total nitrogen and soil fractal dimension in the study area,and a logarithmic curve relation could be found between potassium and soil fractal dimension; the soil fractal dimension D value of refuse dump had a negative correlation with total soil nitrogen,hydrolyzable nitrogen and available potassium,but had no correlation with pH.
出处
《中国水土保持科学》
CSCD
2013年第6期98-104,共7页
Science of Soil and Water Conservation
关键词
化学性质
土壤分形维数
工矿区
chemical properties
soil fractal dimension
industrial and mining areas
