Stormflow generation in a humid forest watershed controlled by antecedent wetness and rainfall amounts
文献类型：期刊论文
| 作者 | Zhang, Guotao3,4,5; Cui, Peng3,5; Gualtieri, Carlo1; Zhang, Junlong7; Bazai, Nazir Ahmed4,5,6; Zhang, Zhengtao2; Wang, Jiao4,6; Tang, Jinbo4; Chen, Rong4; Lei, Mingyu4,5 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 603页码:14 |
| 关键词 | Stormflow generation Threshold behaviors Soil water storage Rainfall amounts Hydrological connectivity |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2021.127107 |
| 通讯作者 | Cui, Peng(pengcui@imde.ac.cn) |
| 英文摘要 | Understanding the meanings and identifying the controls for the stormflow generation with complex and nonlinear behaviors is essential for the development of threshold-based hydrological theory, as well as accurate assessment and prediction for flash flood risks. However, the study of catchment emergent patterns with threelinear threshold behaviors associated with hydrological connectivity has received little attention. Therefore, utilizing soil water storage, rainfall, and streamflow data spanning 3 years in a humid forest experimental watershed, Dujiangyan city, China, we elucidated how and where stormflow was generated with nonlinear behaviors, which were affected by antecedent wetness and rainfall amounts. Stormflow threshold behavior was taken as a function of combined gross precipitation and antecedent soil water storage, which was isolated using piecewise regression analysis with the identification of two breakpoints (i.e., generation threshold, T-g and rising threshold, T-r). It was found that the initial emergent behavior of rainfall-runoff was generally activated at the T-g, and then an abrupt shift from slow to fast flood response was possibly triggered at the T-r. These processes are important to understand the formation and development of flash floods at the watershed scale. It was noted that, above the T-r, considerably higher stormflow amounts generally occurred due to the lateral-connectivity extension of runoff contributing area from stream to neighboring hillslopes. Meanwhile, gravity-driven water movements in soil and better hydrological connectivity during the above-T-r phase readily triggered the huge flash flood disasters. The above-T-r flash floods with abrupt shifts were predominantly controlled by rainfall amounts, while initial below-T-g stormflow generation was mainly controlled by unsaturated soil water storage. More noteworthy, under heavy rainstorm conditions, the above-T-r stormflow was dominantly generated by subsurface flow, as was demonstrated at hillslope and watershed scales. These findings contribute to increasing our understanding of the controls on three-linear threshold-based hydrological behaviors, as well as of subsurface stormflow generation mechanism associated with hydrological connectivity in humid forest watersheds. |
| WOS关键词 | TROPICAL DRY FOREST ; RUNOFF GENERATION ; DEBRIS FLOWS ; THRESHOLD BEHAVIOR ; RISK-ASSESSMENT ; SOIL-MOISTURE ; FLASH-FLOOD ; CATCHMENT ; LANDSLIDE ; HILLSLOPE |
| 资助项目 | National Natural Science Foundation of China[41790432] ; National Natural Science Foundation of China[41941017] ; National Natural Science Foundation of China[U20A20112] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0906] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000715326800036 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/167541]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Cui, Peng |
| 作者单位 | 1.Univ Napoli Federico II, I-80125 Naples, Italy 2.Beijing Normal Univ, Key Lab Environm Change & Nat Disaster, MOE, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.CAS HEC, China Pakistan Joint Res Ctr Earth Sci, Islamabad 45320, Pakistan 7.Shandong Normal Univ, Coll Geog & Environm, Jinan 250358, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Guotao,Cui, Peng,Gualtieri, Carlo,et al. Stormflow generation in a humid forest watershed controlled by antecedent wetness and rainfall amounts[J]. JOURNAL OF HYDROLOGY,2021,603:14. |
| APA | Zhang, Guotao.,Cui, Peng.,Gualtieri, Carlo.,Zhang, Junlong.,Bazai, Nazir Ahmed.,...&Lei, Mingyu.(2021).Stormflow generation in a humid forest watershed controlled by antecedent wetness and rainfall amounts.JOURNAL OF HYDROLOGY,603,14. |
| MLA | Zhang, Guotao,et al."Stormflow generation in a humid forest watershed controlled by antecedent wetness and rainfall amounts".JOURNAL OF HYDROLOGY 603(2021):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。