[1]潘加朋,张克存,安志山,等.基于黏土沙障的复配土壤对土壤水分特征影响对比分析[J].水土保持研究,2024,31(01):88-95.[doi:10.13869/j.cnki.rswc.2024.01.008]
　Pan Jiapeng,Zhang Kecun,An Zhishan,et al.Comparative Analysis of the Effects of Compound Soil Based on Clay Sand Barrier on Soil Moisture Characteristics[J].Research of Soil and Water Conservation,2024,31(01):88-95.[doi:10.13869/j.cnki.rswc.2024.01.008]
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基于黏土沙障的复配土壤对土壤水分特征影响对比分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 31 期数: 2024年01期 页码: 88-95 栏目: 出版日期: 2024-02-20
Title:
Comparative Analysis of the Effects of Compound Soil Based on Clay Sand Barrier on Soil Moisture Characteristics
文章编号:
1005-3409(2024)01-0088-08
作者:
潘加朋1,2,3, 张克存1, 安志山1,2, 张宏雪1,2,3, 薛承杰1,2,3
(1.中国科学院 西北生态环境资源研究院 敦煌戈壁荒漠生态与环境研究站, 甘肃 敦煌 736200; 2.中国科学院 西北生态环境资源研究院 沙漠与沙漠化重点实验室, 兰州 730000; 3.中国科学院大学, 北京 100049)
Author(s):
Pan Jiapeng1,2,3, Zhang Kecun1, An Zhishan1,2, Zhang Hongxue1,2,3, Xue Chengjie1,2,3
(1.Dunhuang Gobi and Desert Ecological and Environmental Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Dunhuang, Ganshu 736200, China; 2.Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; 3.University of Chinese Academy of Sciences, Beijing 100049, China)
关键词:
黏土沙障;  复配土壤;  土壤水分特征曲线;  土壤容重
Keywords:
clay sand barrier;  compound soil;  soil bulk density;  soil water characteristic curve
分类号:
S152.7
DOI:
10.13869/j.cnki.rswc.2024.01.008
文献标志码:
A
摘要:
[目的]研究基于黏土沙障的复配土壤在不同复配质量比下对土壤水分特征的影响,旨在揭示其土壤改良效益,为今后黏土沙障的设计提供最佳复配比。[方法]通过试验设计将各样品划分为空白组、对照组与试验组,并分别对三组样品的土壤容重、水分常数及土壤水分特征曲线进行对比分析。[结果](1)试验组样品土壤容重随复配土壤质量比(即复配比)的增加而减小,相较于空白组,当复配比为5:1时降低至1.45 g/cm3,对照组则降低至1.32 g/cm3。(2)试验组样品的土壤饱和含水率在其复配比超过一定阈值时明显增加,当复配比为2:1时相较于空白组升高了0.97%,同时,其田间持水率与凋萎系数也相较于空白组整体分别升高1.518%,1.543%,对照组两者上升则均超过10%。(3)Gardner模型对三组样品模拟良好,三者土壤含水率均随土壤水势增加而减小,当土壤水势一定时,试验组复配比的增加有效提高了复配土壤的含水率,在土壤水势为0.01～1.5 MPa间不同质量比复配土壤平均增加了1.32%～1.72%。[结论]基于黏土沙障的复配土壤其复配比的增加能有效提升土壤的持水力与保水性,其有效含水量也明显上升,对土壤改良明显。
Abstract:
[Objective] The effects of compound soil based on clay sand barrier on soil water characteristics under different compound mass ratios were studied in order to reveal its soil improvement benefits and provide the best compound ratio for the design of clay sand barrier in the future. [Methods] The samples were divided into blank group, control group and experimental group by experimental design, and the soil bulk density, water constant and soil water characteristic curve of the three groups were compared and analyzed. [Results](1)The soil bulk density of the experimental group decreased with the increase of the compound soil mass ratio(compounding ratio). Compared with the blank group, when the compound soil mass ratio was 5:1, it decreased to 1.45 g/cm3, while the control group decreased to 1.32 g/cm3.(2)The soil saturated water content of the sample in the experimental group increased significantly when the compound ratio exceeded a certain threshold. When the compound ratio was 2:1, it increased by 0.97% compared with the blank group. At the same time, its field water holding rate and wilting coefficient increased by 1.518% and 1.543%, respectively, compared with the blank group, and increased by more than 10% compared with the control group.(3)The Gardner model simulated the three groups of samples well, and the soil moisture content of the three groups decreased with the increase of soil water potential. When the soil water potential was constant, the increase of the compound ratio of the experimental group effectively increased the water content of the compound soil. In the soil water potential of 0.01～1.5 MPa, the different mass ratios of the compound soil increased by an average of 1.32%～1.72%. [Conclusion] The increase of the compound ratio of the compound soil based on the clay sand barrier can effectively improve the water holding capacity and water retention of the soil, and the available water content also significantly increases, which is obvious for soil improvement.

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备注/Memo

收稿日期:2023-02-16 修回日期:2023-02-26
资助项目:国家重点研发项目(2020YFA0608403-1); 国家自然科学基金项目(42171083); 甘肃省自然科学基金(22JR5RA066)
第一作者:潘加朋(1999—),男,山西忻州人,硕士,主要从事风沙灾害与防沙工程研究。E-mail:panjiapeng@nieer.ac.cn
通信作者:张克存(1978—),男,甘肃民勤人,博士,研究员,主要从事风沙灾害与风沙工程研究。E-mail:kecunzh@lzb.ac.cn

更新日期/Last Update: 2024-02-20