The impact of land use and rainfall patterns on the soil loss of the hillslope

被引：46
|
作者：
Meng, Xianmeng [1 ]
Zhu, Yan [1 ]
Yin, Maosheng [2 ]
Liu, Dengfeng [3 ]
机构：
[1] China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China
[2] Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
[3] Xian Univ Technol, Sch Water Resources & Hydropower, Xian 710048, Peoples R China
来源：
SCIENTIFIC REPORTS | 2021年 / 11卷 / 01期
基金：
中国国家自然科学基金;
关键词：
LOESS PLATEAU; NUTRIENT LOSSES; 3; GORGES; MULCHING PRACTICES; WATER EROSION; SUGAR-BEET; RUNOFF; SEDIMENT; AREA; TERRACES;
D O I：
10.1038/s41598-021-95819-5
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
In order to discuss the effect of rainfall patterns and land use types on soil erosion, the experiment is carried out under natural rainfall events on different kinds of runoff plots in Zhangjiachong watershed. Based on the observed data of 44 individual rainfall events including moderate, heavy and storm rainfall, the differences of erosion modulus among hedgerows plots, terrace plots, and slope plots under different rainfall patterns are analyzed. And the effects of hedgerow and terrace patterns on control of soil loss are revealed by RUSLE. Wilcoxon signed rank test is applied to analyze the significant difference of erosion modulus in different plots and the coefficient of variation is used to compare the characteristics of erosion modulus under different rainfall patterns. The results show that the soil erosion modulus of earth banked terrace has the highest value and the lowest soil erosion modulus occurs in the slope land with hedgerows. The coefficients of variation for soil erosion modulus under heavy and storm rainfall are larger than that of moderate rainfall. Hedgerow pattern can effectively control soil erosion under moderate and heavy rainfall while the effect of hedgerow is considerably weakened under storm rainfall. Earth banked terraces own the highest erosion modulus followed by slope land and stone dike terraces.
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页数：10
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