Storm runoff generation in headwater catchments on the Chinese Loess Plateau after long-term vegetation rehabilitation
文献类型：期刊论文
| 作者 | Jin, Zhao1,2; Guo, Li3; Yu, Yunlong1,4; Luo, Da1,5; Fan, Bihang3; Chu, Guangchen1 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-12-15 |
| 卷号 | 748页码:15 |
| ISSN号 | 0048-9697 |
| 关键词 | Catchment hydrology Rainfall partitioning Stormflow Threshold behaviors Vegetation restoration Water flux |
| DOI | 10.1016/j.scitotenv.2020.141375 |
| 通讯作者 | Jin, Zhao(jinzhao@ieecas.cn) ; Guo, Li(guolistory@gmail.com) |
| 英文摘要 | Storm runoff is important for maintaining surface water resources, while this function is significantly affected by land use and land cover changes, e.g., afforestation and reforestation. The Chinese Loess Plateau (CLP) has undergone large-scale vegetation rehabilitation, especially afforestation over the past 20 years. We hypothesize that afforestation has profoundly changed the amounts and mechanisms of storm runoff generation in headwater catchments on the CLP. To test this hypothesis, rainfall, soil moisture, and streamflow were monitored in a grass catchment and an adjacent forest catchment for two consecutive years. The objective of this study was to elucidate the varied mechanisms of storm runoff generation in these two contrasting revegetated catchments. Results showed that (1) average runoff coefficient in the grassland catchment (0.042) was approximately ten times higher than that in the forestland catchment (0.004), confirming the impact of catchment afforestation on the suppression of storm runoff generation. (2) Peak rainfall intensity was the first-order control of the runoff coefficient in the grassland catchment, but not in the forestland catchment. (3) Threshold values for antecedent soil moisture (similar to 18%) and the sum of antecedent soil moisture index and event precipitation (similar to 210 mm) were identified in the grassland catchment, above which storm runoff significantly increased. (4) Two extraordinary high runoff coefficient events were observed in the grassland catchment, one due to high peak rainfall intensity and strong surface runoff and the other due to high rainfall amount and high antecedent soil moisture. We conclude that long-term afforestation has changed the mechanisms and patterns of storm runoff generation, and different conditions of rainfall intensity, rainfall amount and antecedent soil moisture determined the hydrological connectivity between the upper hillslope and downhill gully in the catchment. This study deepens our understanding of the mechanisms and thresholds of storm runoff generation in headwater catchments on the CLP. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS关键词 | SOIL-WATER CONTENT ; SUBSURFACE STORMFLOW ; HILLY AREA ; CHECK-DAMS ; LAND-USE ; RAINFALL ; RESTORATION ; RESPONSES ; COVER ; AFFORESTATION |
| 资助项目 | National Natural Science Foundation of China[41790444] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40000000] ; National Key Research and Development Program[2018YFC1504701] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000581049800068 |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research and Development Program |
| 源URL | [http://ir.ieecas.cn/handle/361006/15494]  |
| 专题 | 中国科学院地球环境研究所 |
| 通讯作者 | Jin, Zhao; Guo, Li |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 3.Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China 4.Xian Inst Innovat Earth Environm Res, Xian 710061, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin, Zhao,Guo, Li,Yu, Yunlong,et al. Storm runoff generation in headwater catchments on the Chinese Loess Plateau after long-term vegetation rehabilitation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,748:15. |
| APA | Jin, Zhao,Guo, Li,Yu, Yunlong,Luo, Da,Fan, Bihang,&Chu, Guangchen.(2020).Storm runoff generation in headwater catchments on the Chinese Loess Plateau after long-term vegetation rehabilitation.SCIENCE OF THE TOTAL ENVIRONMENT,748,15. |
| MLA | Jin, Zhao,et al."Storm runoff generation in headwater catchments on the Chinese Loess Plateau after long-term vegetation rehabilitation".SCIENCE OF THE TOTAL ENVIRONMENT 748(2020):15. |
入库方式： OAI收割
来源：地球环境研究所
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