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Evaluating the effect of soil internal forces on the stability of natural soil aggregates during vegetation restoration
Ma, Rentian1; Hu, Feinan1,2; Liu, Jingfang1; Zhao, Shiwei1,2
2021-07-03
Source PublicationJOURNAL OF SOILS AND SEDIMENTS
ISSN1439-0108
Pages10
Corresponding AuthorHu, Feinan(hufeinan-629@163.com)
AbstractPurpose Soil aggregate stability associates closely with many environmental and agricultural problems. Some studies using the model aggregates find that soil internal forces exert an important impact on soil aggregate stability. However, the effect of soil internal forces on the stability of natural soil aggregates during vegetation restoration has been little studied. Methods Five different succession stages (including farmland, grassland, shrubland, early forest, and climax forest) were chosen in the Ziwuling forest region (in the central part of the Loess Plateau, China), and the size distribution and stability of natural soil aggregates under different succession stages were investigated through dry sieving and wet sieving with ethanol and deionized water prewetting. Results The size distribution of aggregates determined by dry sieving showed decreased first and then increased with decreasing particle size, dominant sizes were 5-1- and < 0.15-mm fractions. The ethanol prewetting treatment showed a distribution similar to that determined by dry sieving. The size distribution of aggregates in deionized water prewetting treatment was mainly < 0.15-mm fractions. Moreover, the mean weight diameter values of farmland, grassland, shrubland, early forest, and climax forest soils determined in ethanol treatment (MWDe) were 4.62, 1.45, 1.31, 1.32, and 1.17 times than those in deionized water treatment (MWDw). In addition, in the fast wetting process, the preservation rate of soil aggregates was higher in 0.5-0.053-mm fractions than in > 0.5-mm fractions. The relative internal force index (RII) of grassland, shrubland, early forest, and climax forest soils decreased by 47%, 54%, 55%, and 64% compared with that of farmland soil, respectively. Conclusions These findings demonstrate that soil internal forces could significantly break down the aggregates and lead to decreasing water stability of aggregates. The vegetation restoration process decreased the repulsive soil internal forces, thereby decreasing the degree of disintegration of aggregates and consequently increased the water stability of aggregates.
KeywordAggregate stability Aggregate size distribution Ethanol Soil organic matter The Loess Plateau
DOI10.1007/s11368-021-03011-z
WOS KeywordCATION-EXCHANGE CAPACITY ; PARTICLE INTERACTION FORCES ; LAND-USE CHANGE ; ORGANIC-MATTER ; SURFACE-AREA ; LOESS PLATEAU ; CARBON ; IMPACT ; FRACTIONS ; COAGULATION
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41977024] ; National Natural Science Foundation of China[41601236] ; Fundamental Research Funds for the Central Universities[2452019078]
Funding OrganizationNational Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEnvironmental Sciences ; Soil Science
WOS IDWOS:000669271000001
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/163756
Collection中国科学院地理科学与资源研究所
Corresponding AuthorHu, Feinan
Affiliation1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Ma, Rentian,Hu, Feinan,Liu, Jingfang,et al. Evaluating the effect of soil internal forces on the stability of natural soil aggregates during vegetation restoration[J]. JOURNAL OF SOILS AND SEDIMENTS,2021:10.
APA Ma, Rentian,Hu, Feinan,Liu, Jingfang,&Zhao, Shiwei.(2021).Evaluating the effect of soil internal forces on the stability of natural soil aggregates during vegetation restoration.JOURNAL OF SOILS AND SEDIMENTS,10.
MLA Ma, Rentian,et al."Evaluating the effect of soil internal forces on the stability of natural soil aggregates during vegetation restoration".JOURNAL OF SOILS AND SEDIMENTS (2021):10.
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