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Soil aggregate stability under different rain conditions for three vegetation types on the Loess Plateau (China)
Quanchao Zeng1,2; Frédéric Darboux3; Cheng Man1; Zhaolong Zhu1; Shaoshan An1; An, SS (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.
SubtypeArticle
2018
Source PublicationCATENA
ISSN0341-8162
description.correspondentemailshan@ms.iswc.ac.cn
Volume167Pages:276-283
AbstractSoil aggregate stability is essential for moderating the soil quality and preventing soil erosion. Vegetation restoration may effectively increase the stability of soil aggregates via soil organic matter. This study was designed to investigate the effects of vegetation types with long-term revegetation on the soil aggregate characteristics. Three vegetation type zones (grass land, forest-grass land and forest land) were selected in the Yanhe Watershed (northwest China) as the subjects. Soil aggregate stability was determined by the method of Le Bissonnais, including three disruptive tests: fast wetting (FW), slow wetting (SW) and mechanical breakdown (WS). The results showed that the mean weighted diameter (MWD) significantly differed from the tests and vegetation types. In the 0-10 cm soil layer, MWD ranged from 2.65 to 3.26 mm for the SW test, which corresponded to very stable soil aggregate; they ranged from 0.53 to 1.08 mm for the WS test, and from 0.57 to 1.96 mm for the FW test, both of which corresponded to very unstable soil aggregates. In the 10-20 cm soil layer, MWD ranged from 2.75 to 3.33 mm for the SW test, 0.39 to 0.83 mm for the WS test, and 0.44 to 1.37 nun for the FW test. The MWDs under the three tests were the lowest for the grass land at both soil layers, and the MWDs for the WS and FW tests were significantly lower than the MWD for the SW test. In all three tests, MWDs showed the same order: forest land > forest-grass land > grass land. MWD indicated that forest land had much stronger ability to resist soil erosion no matter the rain conditions. The correlations between soil organic matter content and MWD for the FW and WS tests were significant (P < 0.05). These results demonstrated that vegetation types had significant effects on the soil aggregates under the different rain conditions, and the soil organic matter and clay contents were significantly related to the soil aggregate stability. These results will guide the practice of reducing soil erosion for the different conditions and different vegetation types.
KeywordLe Bissonnais' Method Soil Aggregate Stability The Loess Plateau Yanhe Watershed Vegetation Zone
Subject AreaGeology ; Agriculture ; Water Resources
DOI10.1016/j.catena.2018.05.009
Indexed BySCI
Publication PlacePO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language英语
WOS IDWOS:000436382700026
PublisherELSEVIER SCIENCE BV
Funding OrganizationNational Natural Science Foundation of China [41671280, 41771317] ; National Natural Science Foundation of China [41671280, 41771317] ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403-C6] ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403-C6] ; Open Program of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CASMWR [A314021402-1812] ; Open Program of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CASMWR [A314021402-1812]
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Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8203
Collection水保所科研产出--SCI_2018--SCI
Corresponding AuthorAn, SS (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.
Affiliation1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Hubei, Peoples R China
3.INRA, UR Sci Sol, Ctr Rech Orleans, UR0272,CS 40001, F-45075 Orleans 2, France
Recommended Citation
GB/T 7714
Quanchao Zeng,Frédéric Darboux,Cheng Man,et al. Soil aggregate stability under different rain conditions for three vegetation types on the Loess Plateau (China)[J]. CATENA,2018,167:276-283.
APA Quanchao Zeng,Frédéric Darboux,Cheng Man,Zhaolong Zhu,Shaoshan An,&An, SS .(2018).Soil aggregate stability under different rain conditions for three vegetation types on the Loess Plateau (China).CATENA,167,276-283.
MLA Quanchao Zeng,et al."Soil aggregate stability under different rain conditions for three vegetation types on the Loess Plateau (China)".CATENA 167(2018):276-283.
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