不同恢复年限弃渣场入渗特征研究与评价

发布时间：2018-03-20 10:52

本文选题：弃渣场　切入点：入渗特征　出处：《水土保持学报》2017年03期 　论文类型：期刊论文

【摘要】：为分析弃渣场入渗性能及其植被恢复效应,采用野外双环入渗和主成分分析方法,分析和评价不同恢复年限弃渣场入渗特征。结果表明:(1)弃渣场恢复年限2个月(P1),2a(P2),4a(P3)和桑树林地(P4)的初始入渗率依次为11.32,9.34,15.84,19.38mm/min,稳定入渗率为4.64,3.62,6.71,7.81mm/min;桑树林地的稳定入渗率为3个弃渣场的1.68,2.16,1.16倍;(2)Kastiakov模型的拟合效果优于通用经验模型、Philip模型和Horton模型,其决定系数为0.905~0.956;(3)入渗特征值与土壤容重,20~5mm,5~2mm颗粒含量呈显著负相关(p0.05),与非毛管孔隙度、有机质含量和2~0.075 mm颗粒含量呈显著(p0.05)或极显著(p0.01)正相关;(4)主成分分析评价的土壤入渗能力排序依次为P4(2.398)P3(0.792)P1(-1.104)P2(-2.089);随着恢复年限的增加,弃渣场入渗性能得到较好的改善且接近桑树林地。
[Abstract]:In order to analyze the infiltration performance and vegetation restoration effect of the abandoned slag field, the field double-ring infiltration and principal component analysis (PCA) were used. The results showed that the initial infiltration rate was 11.32% 9.34% 15.84 mm / min, and the stable infiltration rate was 4.64.62 卤6.71 卤7.81 mm / min for mulberry forest land, and the initial infiltration rate was 11.32 ~ 9.34 ~ 15.84 mm / min for mulberry forest land, respectively, and the stable infiltration rate was 4.643 ~ 3.62 ~ 6.71 ~ 7.81 mm / min for mulberry forest land, and for mulberry forest land, respectively, the initial infiltration rate was 11.32 ~ 9.34 ~ 15.84 mm / min and the stable infiltration rate was 4.64.62 ~ 6.71 ~ 7.81 mm / min, respectively. The fitting effect of Kastiakov model is better than that of Horton model and Philip model. The coefficient of determination is 0.905 ~ 0.956 ~ (3)) the infiltration characteristic value is negatively correlated with soil bulk density of 205mm ~ 5mm ~ (2mm) and has a significant negative correlation with non-capillary porosity. The order of soil infiltration ability evaluated by principal component analysis (PCA) was P _ 4N _ (2.398N) P _ (1) P _ (1) P _ (1) P _ (1) P _ (1.104) (P _ (1)) -2.089 ~ (9); with the increase of restoration years, the infiltration performance of the waste residue field was improved better and close to that of mulberry forest land.
【作者单位】：辽宁工程技术大学环境科学与工程学院;西南大学资源环境学院;
【基金】：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)
【分类号】：S152.7

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