水土保持学报2017，Vol.31Issue(5)：309-314,320,7.DOI:10.13870/j.cnki.stbcxb.2017.05.048
露天煤矿排土场不同植被类型持水能力评价
Evaluation of Water Retention Capacity of Different Vegetation Types in Dump of Opencast Coal Mine
摘要
Abstract
In the present study,the field investigation and indoor analysis were conducted to study the litter characteristics,soil physical features,soil infiltration characteristics and water retention capacities of different vegetation types in dump of opencast coal mine,and water retention capacities were evaluated by principal component analysis.The results indicated that the thickness and amount of litter were different significantly (P＜0.05) among three vegetation types,and the litter thickness of arbor land,shrub land and weeds land were 1.80,1.23,and 0.83 cm,respectively,and the litter accumulation of three vegetation types were 6.76,2.96,and 0.58 t/hm2,respectively.The water retention capacity and interception capacity of litter in arbor land was the maximum,which was significantly greater than those in shrub land and weeds land (P＜ 0.05).The soil bull density was in the order of weeds land ＞ shrub land ＞ arbor land.The soil infiltration capacity of arbor land and shrub land were significantly greater than that of weeds land,and the infiltration rate,the stable infiltration rate and cumulative infiltration of three vegetation types were 1.53 ～ 4.08 mm/ min,0.20 ～ 1.51 mm/min,28 ～133 mL,respectively.The actual storage capacity of arbor land and shrub land were both greater than that of weeds land,and the water storage efficiency of arbor land and shrub land were significantly higher than that of weeds land (P＜0.05).The water retention capacities of different vegetation types were evaluated by principal component analysis.Fifteen indicators were optimized into 3 principal components,with a cumulative contribution rate of 96.832％.The water retention capacities of different vegetation types were in the order of arbor land ＞ shrub land ＞ weeds land.To improve the water retention capacity of litter and soil of dump,arbor (Robinia pseudoacacia) could be selected as the main reclaimed vegetation.关键词
持水能力/排土场/植被类型/土壤水库/主成分分析Key words
water retention capacity/dump/vegetation types/soil reservoir/principal component analysis分类
农业科技引用本文复制引用
李叶鑫,吕刚,刁立夫,傅昕阳,刘雅卓..露天煤矿排土场不同植被类型持水能力评价[J].水土保持学报,2017,31(5):309-314,320,7.基金项目
国家自然科学基金项目(51474119) （51474119）
