Size-selective characteristics of splash-detached sediments and their responses to related parameters on steep slopes in Chinese loessial region
文献类型：期刊论文
| 作者 | Zhang, Qingwei1; Wang, Zhanli1,2; Guo, Qi2,3; Shen, Nan1; Ke, Zengming1; Tian, Naling1; Wu, Bing4; Liu, Jun'e5 |
| 刊名 | SOIL & TILLAGE RESEARCH
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 198页码:7 |
| ISSN号 | 0167-1987 |
| 关键词 | Splash detachment Particle size selectivity Rainfall parameter Hydraulic parameter Clay loam |
| DOI | 10.1016/j.still.2019.104539 |
| 通讯作者 | Wang, Zhanli(zwang@nwsuaf.edu.cn) ; Shen, Nan(shennansilence@163.com) |
| 英文摘要 | Knowledge of the size-selective characteristics of splash-detached sediments can progress the understanding of splash and subsequent interrill wash erosion processes, as well as improve their modelling. Rainfall intensity (I) and slope gradient (S), as well as rainfall kinetic energy (KE), runoff depth (h) and runoff velocity (v) have important effects on splash-detached sediment size. The objectives of this study were to explore the responses of the size-selective characteristics (expressed by mean weight diameter, MWD) of splash-detached sediments to I and S, and to identify the relationships of MWD of splash-detached sediments with KE, h and v. Simulated rainfall experiments were conducted on clay loam under different rainfall intensities (0.7, 1.0, 1.5, 2.0, and 2.5mm min(-1)) and slope gradients (7, 10, 15, 20, and 25 degrees) at the simulated rainfall hall in Yangling, China in 2017. Results showed that the MWD was 72.74-164.17 mu m for the splash-detached sediments, which was lower than that of the soil matrix (183.23 mu m). MWD increased logarithmically with increasing S, and MWD first increased and then decreased with increasing I or ICE parabolically. The relationship of MWD with I and S can be described by an exponential-power combination equation (MWD = 216 e(-1.251) I-1.81 S-0.28, R-2 = 0.88). MWD was negatively related to h and positively related to v. Comprehensive response of MWD to KE, h and v can be described by an exponential-power combination equation (MWD = 0.33 e(-0.002) KE1.18 h(-0.20) v(0.27), R-2 = 0.85). These findings showed that splash-detached sediment size was significantly affected by I and S, as well as ICE, h and v. The study could be helpful in soil conservation management for similar conditions of soil, rainfall and land use. |
| WOS关键词 | SOIL DETACHMENT ; RAINDROP-IMPACT ; EROSION PROCESSES ; AGGREGATE BREAKDOWN ; INTERRILL EROSION ; WASH DYNAMICS ; TRANSPORT ; RAINFALL ; RUNOFF ; WATER |
| 资助项目 | National Natural Science Foundation of China[41830758] ; National Natural Science Foundation of China[41907054] ; National Natural Science Foundation of China[41907046] ; National Natural Science Foundation of China[41867015] ; National Natural Science Foundation of China[41601282] ; National Natural Science Foundation of China[41471230] ; National Key Research and Development Program of China[2017YFD0800502] ; National Key Research and Development Program of China[2016YFC0402401] ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021403-C2] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000515443600006 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/132679]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Zhanli; Shen, Nan |
| 作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Civil Engn, Xian 710049, Shaanxi, Peoples R China 5.Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Qingwei,Wang, Zhanli,Guo, Qi,et al. Size-selective characteristics of splash-detached sediments and their responses to related parameters on steep slopes in Chinese loessial region[J]. SOIL & TILLAGE RESEARCH,2020,198:7. |
| APA | Zhang, Qingwei.,Wang, Zhanli.,Guo, Qi.,Shen, Nan.,Ke, Zengming.,...&Liu, Jun'e.(2020).Size-selective characteristics of splash-detached sediments and their responses to related parameters on steep slopes in Chinese loessial region.SOIL & TILLAGE RESEARCH,198,7. |
| MLA | Zhang, Qingwei,et al."Size-selective characteristics of splash-detached sediments and their responses to related parameters on steep slopes in Chinese loessial region".SOIL & TILLAGE RESEARCH 198(2020):7. |
入库方式： OAI收割
来源：地理科学与资源研究所
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