Comparing critical source areas for the sediment and nutrients of calibrated and uncalibrated models in a plateau watershed in southwest China
文献类型：期刊论文
| 作者 | Chen, Meijun1,2,4; Janssen, Annette B. G.2; de Klein, Jeroen J. M.1; Du, Xinzhong4; Lei, Qiuliang4; Li, Ying3; Zhang, Tianpeng4; Pei, Wei4; Kroeze, Carolien2; Liu, Hongbin4 |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2023-01-15 |
| 卷号 | 326页码:11 |
| ISSN号 | 0301-4797 |
| 关键词 | Soil and water assessment tool (SWAT) Data scarcity Model calibration Seasonal Yearly Hydrology |
| DOI | 10.1016/j.jenvman.2022.116712 |
| 通讯作者 | Du, Xinzhong(duxinzhong@caas.cn) ; Liu, Hongbin(liuhongbin@caas.cn) |
| 英文摘要 | Controlling non-point source pollution is often difficult and costly. Therefore, focusing on areas that contribute the most, so-called critical source areas (CSAs), can have economic and ecological benefits. CSAs are often determined using a modelling approach, yet it has proved difficult to calibrate the models in regions with limited data availability. Since identifying CSAs is based on the relative contributions of sub-basins to the total load, it has been suggested that uncalibrated models could be used to identify CSAs to overcome data scarcity issues. Here, we use the SWAT model to study the extent to which an uncalibrated model can be applied to determine CSAs. We classify and rank sub-basins to identify CSAs for sediment, total nitrogen (TN), and total phosphorus (TP) in the Fengyu River Watershed (China) with and without model calibration. The results show high similarity (81%-93%) between the identified sediment and TP CSA number and locations before and after calibration both on the yearly and seasonal scale. For TN alone, the results show moderate similarity on the yearly scale (73%). This may be because, in our study area, TN is determined more by groundwater flow after calibration than by surface water flow. We conclude that CSA identification with the uncalibrated model for TP is always good because its CSA number and locations changed least, and for sediment, it is generally satisfactory. The use of the uncalibrated model for TN is acceptable, as its CSA locations did not change after calibration; however, the TN CSA number changed by over 60% compared to the figures before calibration on both yearly and seasonal scales. Therefore, we advise using an uncalibrated model to identify CSAs for TN only if water yield composition changes are expected to be limited. This study shows that CSAs can be identified based on relative loading es-timates with uncalibrated models in data-deficient regions. |
| WOS关键词 | NONPOINT-SOURCE POLLUTION ; ERHAI LAKE BASIN ; PHOSPHORUS POLLUTION ; SOURCE NITROGEN ; IDENTIFICATION ; MANAGEMENT ; QUALITY ; SWAT ; VARIABILITY ; RESERVOIR |
| 资助项目 | National Natural Science Foundation of China[42107076] ; National Natural Science Foundation of China[U20A20114] ; NWO talent grant Veni[VI.Veni.194.002] ; KNAW project SURE+[PSA-SA-E-01] ; China Scholarship Council (CSC) ; Graduate School of Chinese Academy of Agricultural Sciences (GSCAAS) ; University of Wageningen |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000889850600001 |
| 资助机构 | National Natural Science Foundation of China ; NWO talent grant Veni ; KNAW project SURE+ ; China Scholarship Council (CSC) ; Graduate School of Chinese Academy of Agricultural Sciences (GSCAAS) ; University of Wageningen |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/188000]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Du, Xinzhong; Liu, Hongbin |
| 作者单位 | 1.Wageningen Univ & Res, Dept Environm Sci, Aquat Ecol & Water Qual Management Grp, POB 47, NL-6700 AA Wageningen, Netherlands 2.Wageningen Univ & Res, Dept Environm Sci, Water Syst & Global Change Grp, POB 47, NL-6700 AA Wageningen, Netherlands 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 4.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr & Rural Affairs, Key Lab Nonpoint Source Pollut Control, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Meijun,Janssen, Annette B. G.,de Klein, Jeroen J. M.,et al. Comparing critical source areas for the sediment and nutrients of calibrated and uncalibrated models in a plateau watershed in southwest China[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2023,326:11. |
| APA | Chen, Meijun.,Janssen, Annette B. G..,de Klein, Jeroen J. M..,Du, Xinzhong.,Lei, Qiuliang.,...&Liu, Hongbin.(2023).Comparing critical source areas for the sediment and nutrients of calibrated and uncalibrated models in a plateau watershed in southwest China.JOURNAL OF ENVIRONMENTAL MANAGEMENT,326,11. |
| MLA | Chen, Meijun,et al."Comparing critical source areas for the sediment and nutrients of calibrated and uncalibrated models in a plateau watershed in southwest China".JOURNAL OF ENVIRONMENTAL MANAGEMENT 326(2023):11. |
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。