水土保持学报2017，Vol.31Issue(3)：91-95,5.DOI:10.13870/j.cnki.stbcxb.2017.03.016
不同恢复年限弃渣场入渗特征研究与评价
Research and Evaluation on Infiltration Characteristics of Dumps with Different Restoration Ages
摘要
Abstract
In order to analyze the infiltration characteristics and the effects of vegetation restoration of dumps,infiltration characteristics of dumps with different restoration ages were studied and evaluated by using field double-ring infiltration and principal component analysis method.The results indicated that:(1) The initial infiltration rate of two-month (P1),two-years (P2),four-years (P3) dump and mulberry land (P4) was 11.32,9.34,15.84,and 19.38 mm/min,respectively;the stable infiltration rate was 4.64,3.62,6.71,and 7.81 mm/min,respectively.The stable infiltration rate of mulberry land was 1.68,2.16,and 1.16 times greater than that of the other three dumps,respectively.(2) The fitting effect of Kastiakov model was better than that of the common empirical infiltration model,the Philip model,and the Horton model,with the determination coefficient ranging from 0.905 to 0.956.(3) The eigenvalues of soil infiltration had significantly negative correlations with soil bulk density,and 20-5 mm and 5-2 mm gravel content,but showed significantly or very significantly positive correlations with non-capillary porosity,organic matter content,and 2-0.075 mm soil particle content.(4) Soil infiltration capacity was evaluated by principal component analysis,and was in the order of P4 (2.398) ＞ P3 (0.792) ＞ P1 (-1.104) ＞ P2 (-2.089).The infiltration capacity of dump was improved with the increasing restoration ages,and was close to that of the mulberry land.关键词
弃渣场/入渗特征/植被恢复/林地/重庆市Key words
dump/infiltration characteristics/vegetation restoration/forest land/Chongqing City分类
农业科技引用本文复制引用
李叶鑫,史东梅,吕刚,林姿..不同恢复年限弃渣场入渗特征研究与评价[J].水土保持学报,2017,31(3):91-95,5.基金项目
重庆市水利局科技项目“重庆市生产建设项目水土流失危害研究”(2012),“生产建设项目弃土弃渣水土流失规律研究”(2011) （2012）
