干旱区生态环境知识资源中心(Arid): 不同生态修复模式下土壤水文性质及其对溶质运移的影响

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	不同生态修复模式下土壤水文性质及其对溶质运移的影响
其他题名	Soil hydrological properties and their effects on solute transport under different ecological restoration models in coal mining area
	郭志萍 1; 李斌 2; 孙西欢 3; 杨永刚 2; 焦文涛 4
来源期刊	环境科学学报
ISSN	0253-2468
出版年	2019
卷号	39 期号:12 页码:4251-4260
中文摘要	煤矿区生态修复过程中不可避免地改变了土壤水和溶质运移过程.土壤水是溶质运移的主要载体,溶质运移受土壤水文性质与植被状况影响.以我国北方典型半干旱区山西古交矿区草本、灌草和乔灌草3种不同生态修复区和撂荒地的土壤为研究对象,揭示不同生态修复模式下土壤水文性质变化规律及其对溶质运移的影响.结果表明,土壤持水性从大到小依次为乔灌草地>灌草地>草地>撂荒地,草本、灌草和乔灌草3种植被修复区的土壤持水量相对于撂荒地分别增加了33.79%、59.19%和62.71%,植被修复有助于增加土壤层蓄水能力.土壤饱和导水率由大到小依次为草地(1.736 mm·min~(-1) )>灌草地(1.678 mm·min~(-1) )>乔灌草地(1.564 mm·min~(-1))>撂荒地(1.012 mm·min~(-1)),非饱和导水率随吸力增大而呈指数下降,植被修复过程中降低容重的同时提高了土壤持水性,改善土壤持水性能.不同生态修复区土壤中溶质穿透时间呈草地>灌草地>乔灌草地>撂荒地的趋势.CDE、SC和TRM模型均可对矿区不同生态修复模式土壤的溶质运移过程进行较好的表达,其中CDE模型拟合效果最好.结果表明研究区溶质运移方式以对流为主,而且土壤容重和砂粒含量是影响溶质运移的主要因素.
英文摘要	The transport process of soil water and solute are inevitably changedduring ecological restoration of mining areas. Soil water is the main carrier of solute transport. Which is affected by soil hydrological properties and vegetation status. Investigation and describing soil hydrological properties and solute transport process in unsaturated zone is one of key scientific issues during the process of ecosystem restoration in mining area. In this study,herbaceous, shrubs,arbors,shrubs and grasses vegetation restoration areas and abandoned wasteland in Gujiao mining area of Shanxi Province were selected as the research objects. By monitoring soil physical and chemical properties and hydraulic parameters under different ecological restoration modes, soil hydrological properties were revealed in ecological restoration areas. The migration process and transport characteristics of solute under different ecosystem restoration modes were simulated by CDE,TRM and SC models. effects of soil hydrological properties on solute transport were investigated under different ecological restoration models in coal mining. The results show that soil water-holding capacities ranked as follows: arbors-shrubs-grasses > shrubs-grasses area>herbaceous area>abandoned wasteland area. Soil saturated water conductivity ranked as follows:herbaceousarea>shrubs-grassesarea>arbors-shrubs-grasses>abandonedwastelandarea. Compared with that of abandoned land, the water holding capacity of herbaceous,irrigated grass and arbor irrigated grass increased by 33.79%, 59.19% and 62.71%, respectively. After ecosystem restoration, there was a significant positive correlation between bulk density and soil water holding capacity. Vegetation reduced bulk density and improved soil water holding capacity. The unsaturated water conductivity decreased exponentially with the increase of suction. Solute penetration time of different ecological restoration models are in the following: herbaceous area (1.736 mm·min~(-1) )>shrubs- ( 1.678 mm· min~(-1)) > arbors-shrubs-grasses (1.564 mm ·min~(-1)) > abandoned wasteland area( 1.012 mm·min~(-1)). CDE, SC and TRM model can better express the transport process of solute under different ecological remediation modes in the mining area, especially CDE. Convection was the main transport mode, and bulk density and sand content were the main factors affecting solute transport in mining area.
中文关键词	矿区 ; 修复模式 ; 土壤水文 ; 溶质运移 ; 数值模拟
英文关键词	mining area restoration modes soil hydrology solute transport numerical simulation
语种	中文
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6628085
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316152
作者单位	1.太原理工大学水利科学与工程学院;;山西水利职业技术学院, ;;, 太原;;运城, ;; 030024;;044004; 2.山西大学环境与资源学院, 太原, 山西 030006, 中国; 3.太原理工大学水利科学与工程学院, 太原, 山西 030024, 中国; 4.中国科学院生态环境研究中心, 北京 100085, 中国
推荐引用方式 GB/T 7714	郭志萍,李斌,孙西欢,等. 不同生态修复模式下土壤水文性质及其对溶质运移的影响[J],2019,39(12):4251-4260.
APA	郭志萍,李斌,孙西欢,杨永刚,&焦文涛.(2019).不同生态修复模式下土壤水文性质及其对溶质运移的影响.环境科学学报,39(12),4251-4260.
MLA	郭志萍,et al."不同生态修复模式下土壤水文性质及其对溶质运移的影响".环境科学学报 39.12(2019):4251-4260.