摘要
为揭示不同重构土壤配比及不同植被生长等级对重构土壤含水率影响的差异性,探寻最适宜的重构土壤材料配比,本文以内蒙古胜利矿区内排土场为研究区,对重构土壤复垦地进行了调查和取样,并采用单因素方差分析法对重构土壤的土壤含水率进行差异性分析,讨论了形成差异的原因。结果表明:(1)在不同的植被生长等级下,土壤重构方式为岩土剥离物∶煤矸石∶粉煤灰=3∶4∶3时,土壤含水率均较高;(2)当土壤重构方式相同时,不同植被生长等级下土壤含水率不完全受植被生长等级影响。土壤重构方式为岩土剥离物时,大田块一(15 d翻耕靶地一次)和大田块二(30 d翻耕靶地一次)在植被生长等级为1、2时,土壤含水率较高;土壤重构方式为岩土剥离物∶煤矸石=2∶3时,大田块三(60 d翻耕靶地一次)和大田块四(当年翻耕处理并种植苜蓿)在植被生长等级为3时,土壤含水率较高;土壤重构方式为岩土剥离物∶煤矸石∶粉煤灰=3∶4∶3时,大田块一(15 d翻耕靶地一次)和大田块三(60 d翻耕靶地一次)在植被生长等级为3时,土壤含水率最高,大田块二(30 d翻耕靶地一次)和大田块四(当年翻耕处理并种植苜蓿)在植被生长等级为1时土壤含水率最高。岩土剥离物、煤矸石、粉煤灰作为表土替代材料,其不同配比在重构土壤上的研究可以为表土稀缺矿区的复垦工作提供支撑,为全球草原露天矿区的生态修复工程提供参考。
In order to reveal the difference in the effect of different reconstituted soil ratios and different vegetation growth grade on the moisture content of reconstituted soils, the most suitable ratio of reconstituted soil materials is explored.This paper takes the dump in the Shengli Mining Area of Inner Mongolia as the research area, surveys and samples the reconstructed soil reclaimed land, uses the one-way analysis of variance to analyze the difference in the field soil moisture content of the reconstructed soil, and discusses the reason of differences.The results show that under different vegetation growth grade, the soil moisture content is relatively strong when the soil reconstruction method is rock and soil stripping∶coal gangue∶fly ash=3∶4∶3.When the soil reconstruction method is the same, the soil moisture content under different vegetation growth grade is not completely affected by vegetation growth grade.When the soil reconstruction method is rock and soil stripped material, the soil moisture content of field 1(on the ploughing target once in 15 days) and field 2(one plowing target once in 30 days) is better when the vegetation growth grade is 1 and 2.When the soil reconstruction method is rock and soil stripping material∶coal gangue=2∶3,field 3(once the ploughing target in 60 days) and field 4(plowing and planting alfalfa that year) is better when the vegetation growth grade is 3.When the level is 3,the soil moisture content is better;when the soil reconstruction method is rock and soil stripping∶coal gangue∶fly ash=3∶4∶3,field 1(on the ploughing target once in 15 days) and field 3(on the ploughing target once in 60 days) had the best soil moisture content when the vegetation growth grade is 3,field 2(on the ploughing target once in 30 days) and field 4(plowing and planting alfalfa that year) had the best soil moisture content when the vegetation growth grade is 1.The study of the different proportions of coal gangue, fly ash and rock and soil stripping material as topsoil replacemen
作者
孙俊东
韩兴
黄月军
肖兵
佘长超
王玲玲
王凡
SUN Jundong;HAN Xing;HUANG Yuejun;XIAO Bing;SHE Changchao;WANG Lingling;WANG Fan(Shenhua Beidian Shengli Energy Co.,Ltd.,Xilinhot 026000,China;School of Land Science and Technology,China University of Geosciences(Beijing),Beijing 100083,China)
出处
《中国矿业》
2022年第4期86-95,共10页
China Mining Magazine
基金
国家重点研发计划项目资助(编号:2016YFC0501105-2)。
关键词
土地复垦
矿区生态修复
表土替代材料
土壤含水率
植被生长等级
land reclamation
ecological restoration of mining area
topsoil replacement materials
soil moisture content
vegetation growth grade
