Incorporating a rainfall intensity modification factor gamma into the I-a-S Relationship in the NRCS-CN method
文献类型：期刊论文
| 作者 | Hu, Pengcheng1,2; Tang, Jialiang1 ; Fan, Jihui1; Shu, Shumiao1,2; Hu, Zhaoyong1,2; Zhu, Bo1
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| 刊名 | INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 8期号:3页码:237-244 |
| 关键词 | Climate change Rainfall intensity Runoff NRCS-CN method CN sensitivity |
| ISSN号 | 2095-6339 |
| DOI | 10.1016/j.iswcr.2020.07.004 |
| 产权排序 | 1 |
| 通讯作者 | Zhu, Bo(bzhu@imde.ac.cn) |
| 文献子类 | Article |
| 英文摘要 | The Natural Resources Conservation Service runoff curve number (NRCS-CN) method is widely used to simulate direct runoff, but the impact of rainfall intensity has not been considered. In this study, a rainfall intensity modification factor (gamma) was incorporated into the I-a-S relationship of the NRCS-CN method, and the modified method (NRCS-CN-gamma) was compared with the NRCS-CN method with lambda = 0.2 and lambda = 0.05 in three watersheds of the Walnut Gulch Experimental Watershed (WGEW). The results showed that for 2016-2018 period, the simulation performance of the NRCS-CN-gamma method was close to the NRCS-CN (lambda = 0.05) method and better than the NRCS-CN (lambda = 0.2) method. When the new data (2009 data with high variance) was added, the significant improvement was observed by NRCS-CN-gamma method with all the evaluation parameters being the best in the three watersheds, indicating a more adapted capability of the modified method with highly uneven rainfall intensities. The covariance between rainfall intensity and the simulated runoff were 19.01, 15.14, and 16.35 for the three methods, respectively. When the optimal CN changed, the relative errors representing CN sensitivity were 6.25, 6.49 and 17.39 for the methods, respectively. It is suggested that the NRCS-CN-gamma method outperformed the other two methods and could contribute to a more accurate estimation of direct runoff where rainfall intensity greatly varied, especially in monsoon region or under the context of climate change. (C) 2020 International Research and Training Center on Erosion and Sedimentation and China Water and Power Press. Production and Hosting by Elsevier B.V. |
| 电子版国际标准刊号 | 2589-059X |
| WOS关键词 | RUNOFF CURVE NUMBER ; WALNUT-GULCH ; WATERSHEDS ; SOILS ; MODEL ; FLOW |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23040202] ; National Natural Science Foundation[41430750] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000564216100003 |
| 出版者 | KEAI PUBLISHING LTD |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation |
| 源URL | [http://ir.imde.ac.cn/handle/131551/35602]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 通讯作者 | Zhu, Bo |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolut & Regulat, Chengdu 610041, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Pengcheng,Tang, Jialiang,Fan, Jihui,et al. Incorporating a rainfall intensity modification factor gamma into the I-a-S Relationship in the NRCS-CN method[J]. INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH,2020,8(3):237-244. |
| APA | Hu, Pengcheng,Tang, Jialiang,Fan, Jihui,Shu, Shumiao,Hu, Zhaoyong,&Zhu, Bo.(2020).Incorporating a rainfall intensity modification factor gamma into the I-a-S Relationship in the NRCS-CN method.INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH,8(3),237-244. |
| MLA | Hu, Pengcheng,et al."Incorporating a rainfall intensity modification factor gamma into the I-a-S Relationship in the NRCS-CN method".INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH 8.3(2020):237-244. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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