Rainfall-runoff process and sediment yield in response to different types of terraces and their characteristics: A case study of runoff plots in Zhangjiachong watershed, China
被引:3
作者:
Meng, Xianmeng
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机构:
China Univ Geosci, Sch Environm Studies, Wuhan, Peoples R China
China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R ChinaChina Univ Geosci, Sch Environm Studies, Wuhan, Peoples R China
Meng, Xianmeng
[1
,4
]
Zhu, Yan
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机构:
China Univ Geosci, Sch Environm Studies, Wuhan, Peoples R ChinaChina Univ Geosci, Sch Environm Studies, Wuhan, Peoples R China
Zhu, Yan
[1
]
Shi, Ruohui
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机构:
China Univ Geosci, Sch Environm Studies, Wuhan, Peoples R ChinaChina Univ Geosci, Sch Environm Studies, Wuhan, Peoples R China
Shi, Ruohui
[1
]
Yin, Maosheng
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机构:
EIT Inst Adv Study, Ningbo, Peoples R ChinaChina Univ Geosci, Sch Environm Studies, Wuhan, Peoples R China
Yin, Maosheng
[2
]
Liu, Dengfeng
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机构:
Xian Univ Technol, Sch Water Resources & Hydropower, Xian, Peoples R ChinaChina Univ Geosci, Sch Environm Studies, Wuhan, Peoples R China
Liu, Dengfeng
[3
]
机构:
[1] China Univ Geosci, Sch Environm Studies, Wuhan, Peoples R China
[2] EIT Inst Adv Study, Ningbo, Peoples R China
[3] Xian Univ Technol, Sch Water Resources & Hydropower, Xian, Peoples R China
[4] China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China
earth bank;
rainfall-runoff process;
sediment yield;
stone dike;
tank model;
terrace;
SOIL-EROSION;
LAND DEGRADATION;
LOESS PLATEAU;
CONSERVATION;
CATCHMENT;
TRANSPORT;
IMPACTS;
MODEL;
RATES;
D O I:
10.1002/ldr.4998
中图分类号:
X [环境科学、安全科学];
学科分类号:
08 ;
0830 ;
摘要:
A field experiment was conducted in the Zhangjiachong watershed to analyze the characteristics of rainfall-runoff process and sediment yield under different types of terraces. Various runoff plots were utilized, and a two serial tank model was employed to simulate runoff generation and concentration processes, taking into account vegetation interception. A soil erosion model incorporating raindrop erosion and sheet erosion was established to replicate sediment yield and concentration process. The parameters of the rainfall-runoff model and soil erosion model were calibrated and validated using observed runoff and sediment yield data. The controlling factors on runoff and sediment yield were explored and compared. The results indicate that both calibration and validation outcomes were acceptable. The earth-banked terraces-citrus demonstrated the largest coefficients of upper and lower surface runoff, while its upper runoff threshold of the upper tank and the runoff threshold of the lower tank were the lowest, suggesting that it was more likely to produce surface and subsurface runoff. On the other hand, the stone dike terraces-crops exhibited the smallest coefficients of upper and lower surface runoff, while its upper runoff threshold of the upper tank was the highest. The lower runoff threshold of the upper tank was the same across different types of terraces. Compared to the earth-banked terraces, the stone dike terraces have a larger infiltration coefficient in the upper tank and a smaller infiltration coefficient in the lower tank. Sensitivity analysis indicates that the most sensitive factors affecting runoff simulation results are the runoff threshold and the infiltration coefficient of the lower tank. Terraces, whether constructed with earth banks or stone dikes, are effective in reducing soil erosion. However, during storm rainfall events, these terraces may be partially destroyed, resulting in a higher sediment yield than that of the same vegetation cover on slope land. Terraces with hedgerows have a more significant effect on reducing runoff and sediment than those without hedgerows.
机构:
Zhejiang Univ, Dept Land Management, Hangzhou 310003, Zhejiang, Peoples R ChinaZhejiang Univ, Dept Land Management, Hangzhou 310003, Zhejiang, Peoples R China
Cao, Yu
Wu, Yuhuan
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机构:
Hangzhou Normal Univ, Coll Biol & Environm Sci, Hangzhou, Zhejiang, Peoples R ChinaZhejiang Univ, Dept Land Management, Hangzhou 310003, Zhejiang, Peoples R China
Wu, Yuhuan
Zhang, Yangjian
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机构:
Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R ChinaZhejiang Univ, Dept Land Management, Hangzhou 310003, Zhejiang, Peoples R China
Zhang, Yangjian
Tian, Jie
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机构:
Clark Univ, Dept Int Dev Commun & Environm, Worcester, MA 01610 USAZhejiang Univ, Dept Land Management, Hangzhou 310003, Zhejiang, Peoples R China
机构:
Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
Chen, Die
Wei, Wei
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机构:
Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R ChinaChinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
Wei, Wei
Chen, Liding
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机构:
Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R ChinaChinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
机构:
Zhejiang Univ, Dept Land Management, Hangzhou 310003, Zhejiang, Peoples R ChinaZhejiang Univ, Dept Land Management, Hangzhou 310003, Zhejiang, Peoples R China
Cao, Yu
Wu, Yuhuan
论文数: 0引用数: 0
h-index: 0
机构:
Hangzhou Normal Univ, Coll Biol & Environm Sci, Hangzhou, Zhejiang, Peoples R ChinaZhejiang Univ, Dept Land Management, Hangzhou 310003, Zhejiang, Peoples R China
Wu, Yuhuan
Zhang, Yangjian
论文数: 0引用数: 0
h-index: 0
机构:
Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R ChinaZhejiang Univ, Dept Land Management, Hangzhou 310003, Zhejiang, Peoples R China
Zhang, Yangjian
Tian, Jie
论文数: 0引用数: 0
h-index: 0
机构:
Clark Univ, Dept Int Dev Commun & Environm, Worcester, MA 01610 USAZhejiang Univ, Dept Land Management, Hangzhou 310003, Zhejiang, Peoples R China
机构:
Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
Chen, Die
Wei, Wei
论文数: 0引用数: 0
h-index: 0
机构:
Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R ChinaChinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
Wei, Wei
Chen, Liding
论文数: 0引用数: 0
h-index: 0
机构:
Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R ChinaChinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China