Modelling of the estimated contributions of different sub-watersheds and sources to phosphorous export and loading from the Dongting Lake watershed, China
文献类型：期刊论文
| 作者 | Chen, Weiping; Liao, Yuehua; Luo, Yueping; Hou, Ying |
| 刊名 | ENVIRONMENTAL MONITORING AND ASSESSMENT
 |
| 出版日期 | 2017-12-01 |
| 卷号 | 189期号:12页码:- |
| 关键词 | Export Coefficient Model Dillon-rigler Model Phosphorous Livestock Husbandry Transport Coefficients |
| 英文摘要 | Considerable growth in the economy and population of the Dongting Lake watershed in Southern China has increased phosphorus loading to the lake and resulted in a growing risk of lake eutrophication. This study aimed to reveal the spatial pattern and sources of phosphorus export and loading from the watershed. We applied an export coefficient model and the Dillon-Rigler model to quantify contributions of different sub-watersheds and sources to the total phosphorus (TP) export and loading in 2010. Together, the upper and lower reaches of the Xiang River watershed and the Dongting Lake Area contributed 60.9% of the TP exported from the entire watershed. Livestock husbandry appeared to be the largest anthropogenic source of TP, contributing more than 50% of the TP exported from each secondary sub-watersheds. The actual TP loading to the lake in 2010 was 62.9% more than the permissible annual TP loading for compliance with the Class III water quality standard for lakes. Three primary sub-watersheds-the Dongting Lake Area, the Xiang River, and the Yuan River watersheds-contributed 91.2% of the total TP loading. As the largest contributor among all sources, livestock husbandry contributed nearly 50% of the TP loading from the Dongting Lake Area and more than 60% from each of the other primary sub-watersheds. This study provides a methodology to identify the key sources and locations of TP export and loading in large lake watersheds. The study can provide a reference for the decision-making for controlling P pollution in the Dongting Lake watershed. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39059]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Chen, Weiping,Liao, Yuehua,Luo, Yueping,et al. Modelling of the estimated contributions of different sub-watersheds and sources to phosphorous export and loading from the Dongting Lake watershed, China[J]. ENVIRONMENTAL MONITORING AND ASSESSMENT,2017,189(12):-. |
| APA | Chen, Weiping,Liao, Yuehua,Luo, Yueping,&Hou, Ying.(2017).Modelling of the estimated contributions of different sub-watersheds and sources to phosphorous export and loading from the Dongting Lake watershed, China.ENVIRONMENTAL MONITORING AND ASSESSMENT,189(12),-. |
| MLA | Chen, Weiping,et al."Modelling of the estimated contributions of different sub-watersheds and sources to phosphorous export and loading from the Dongting Lake watershed, China".ENVIRONMENTAL MONITORING AND ASSESSMENT 189.12(2017):-. |
入库方式： OAI收割
来源：生态环境研究中心
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