Response of soil aggregate stability and splash erosion to different breakdown mechanisms along natural vegetation restoration
文献类型：期刊论文
| 作者 | Ma, Rentian1; Hu, Feinan1,2; Xu, Chenyang1; Liu, Jingfang1; Zhao, Shiwei1,2 |
| 刊名 | CATENA
 |
| 出版日期 | 2022 |
| 卷号 | 208页码:8 |
| 关键词 | Mean weight diameter Splash erosion rate Ethanol Soil organic matter Loess Plateau |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2021.105775 |
| 通讯作者 | Hu, Feinan(hufn@nwafu.edu.cn) |
| 英文摘要 | Vegetation restoration may effectively improve aggregate stability and reduce soil erosion by increasing soil organic matter (SOM). Soil internal and raindrop impact forces are the main breakdown mechanisms of soil aggregates, and the main erosive factors that generate splash erosion. However, it remains unclear about how these forces affect the aggregate stability and the splash erosion during natural vegetation restoration. In this study, four soils at different succession stages (farmland, grassland, shrub, and forest) were selected. Deionized water and ethanol were employed to evaluate the effect of soil internal and raindrop impact forces on aggregate stability and splash erosion during vegetation restoration, by performing fast-wetting test and simulated rainfall experiment. Deionized water was used to simulate the combined effects of soil internal and raindrop impact forces, whereas ethanol was used to simulate the sole effect of raindrop impact force. The results indicated that soil organic matter (SOM) content, cation exchange capacity (CEC), specific surface area (SSA), and soil aggregate stability for the four soils increased with revegetation. The soil aggregate stability in deionized water test (MWDW) was lower than these in ethanol test (MWDE), and the relative difference of the MWD (R-MWD) decreased with revegetation. Besides, the splash erosion rate in deionized water test (S-W) was much higher than those in ethanol test (S-E). S-W and S-E decreased with the order of grassland < shrub < forest. With the increasing rainfall kinetic energy, splash erosion rates increased in both deionized water and ethanol tests; but the contribution rates of soil internal forces to rainfall splash erosion decreased. The overall results suggested that the process of vegetation restoration altered soil particle surface properties mainly due to the increase SOM, and decreased the net repulsive internal forces, which thereby improved aggregate stability and erosion resistance with revegetation. |
| WOS关键词 | CATION-EXCHANGE CAPACITY ; PARTICLE INTERACTION FORCES ; ORGANIC-MATTER ; LOESS PLATEAU ; SURFACE-AREA ; AQUEOUS-SOLUTIONS ; CLAY MINERALOGY ; IMPACT ; CARBON ; SIZE |
| 资助项目 | National Natural Science Foundation of China[41977024] ; National Natural Science Foundation of China[41601236] ; Fundamental Research Funds for the Central Universities[2452019078] |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000708436100021 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/167226]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Hu, Feinan |
| 作者单位 | 1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Rentian,Hu, Feinan,Xu, Chenyang,et al. Response of soil aggregate stability and splash erosion to different breakdown mechanisms along natural vegetation restoration[J]. CATENA,2022,208:8. |
| APA | Ma, Rentian,Hu, Feinan,Xu, Chenyang,Liu, Jingfang,&Zhao, Shiwei.(2022).Response of soil aggregate stability and splash erosion to different breakdown mechanisms along natural vegetation restoration.CATENA,208,8. |
| MLA | Ma, Rentian,et al."Response of soil aggregate stability and splash erosion to different breakdown mechanisms along natural vegetation restoration".CATENA 208(2022):8. |
入库方式： OAI收割
来源：地理科学与资源研究所
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