Modelling stream nutrient source and yield by coupling hydrological processes and nutrient budgets from an experimental headwater catchment with orchard expansion in the Changjiang River Delta area
文献类型：期刊论文
| 作者 | Zhang, Peipei1,2; Wang, Fang1; Wang, Jianing3; Yan, Weijin1; Li, Yanqiang1,4; Wang, Dongsheng5,6 |
| 刊名 | HYDROLOGICAL PROCESSES
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 36期号:8页码:16 |
| ISSN号 | 0885-6087 |
| 关键词 | diffuse source headwater reservoir catchment modelling nutrient export coefficient nutrient yields orchard expansion |
| DOI | 10.1002/hyp.14660 |
| 通讯作者 | Yan, Weijin(yanwj@igsnrr.ac.cn) |
| 英文摘要 | Although watershed nutrient exports have been well studied and modelled, the dynamic changes in the contributions of individual nutrient sources to reservoirs are less certain under changing land use and climate. The intensification of agriculture has led to expansion in plantation areas and the corresponding increased use of chemical and organic fertilisers in many headwater catchments in recent decades in China. Nutrient yields are potentially substantial because of the expansion of agricultural ecosystems. Here, in combination with biogeochemical nutrient budgets, we developed a synthesis model to quantify daily nutrient yields in terms of dissolved inorganic nitrogen (DIN), dissolved organic nitrogen (DON), dissolved inorganic phosphorus (DIP) and dissolved organic phosphorus (DOP). We also identified their sources in an experimental headwater reservoir catchment based on high-frequency observations of daily precipitation with nutrient concentrations in the stream outlets from January 2020 to December 2021. Annual DIN, DON, DIP and DOP yields were 31.68 +/- 2.38, 5.98 +/- 0.41, 1.12 +/- 0.08 and 0.37 +/- 0.27 kg ha(-1) yr(-1), respectively. All nutrient yields showed significant seasonal patterns, with over 60% of the total nutrient yield obtained from May to July. Our model suggests that over 70% of the annual nutrient yields were driven by rainfall exceeding 40 mm. Approximately 70% of catchment nutrient yields were from chemical and organic fertiliser applications. Triple nitrate isotopes (delta N-15-NO3-, delta O-18-NO3- and delta O-17-NO3-) revealed that stream nitrate sources and their contributions were almost consistent with the estimation from our model. The estimates demonstrated that orchard expansion by 25% of the total area led to a 63% increase in dissolved total nitrogen and an 88% increase in dissolved total phosphorus exports. Our results reveal that diffuse sources from orchard plantations are an important yet overlooked source of nutrients to the receiving headwater reservoir budget. |
| WOS关键词 | NET ANTHROPOGENIC NITROGEN ; NITRATE SOURCES ; POLLUTION ; BALANCE ; INPUTS ; EUTROPHICATION ; WATERS ; CHINA ; LOADS ; O-17 |
| 资助项目 | National Natural Science Foundation of China[41371454] ; National Natural Science Foundation of China[42077304] ; National Natural Science Foundation of China[41877483] |
| WOS研究方向 | Water Resources |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000844217800001 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/182228]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yan, Weijin |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Chinese Acad Environm Planning, Inst Environm Investment & Ind, Beijing, Peoples R China 4.Shandong Agr Univ, Coll Resources & Environm, Tai An, Shandong, Peoples R China 5.Yangtze River Delta Res Ctr Ecoenvironm Sci, Environm & Water Qual Testing Technol Ctr, Yiwu City, Zhejiang, Peoples R China 6.Zhejiang Univ, Dept Environm Engn, Hangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Peipei,Wang, Fang,Wang, Jianing,et al. Modelling stream nutrient source and yield by coupling hydrological processes and nutrient budgets from an experimental headwater catchment with orchard expansion in the Changjiang River Delta area[J]. HYDROLOGICAL PROCESSES,2022,36(8):16. |
| APA | Zhang, Peipei,Wang, Fang,Wang, Jianing,Yan, Weijin,Li, Yanqiang,&Wang, Dongsheng.(2022).Modelling stream nutrient source and yield by coupling hydrological processes and nutrient budgets from an experimental headwater catchment with orchard expansion in the Changjiang River Delta area.HYDROLOGICAL PROCESSES,36(8),16. |
| MLA | Zhang, Peipei,et al."Modelling stream nutrient source and yield by coupling hydrological processes and nutrient budgets from an experimental headwater catchment with orchard expansion in the Changjiang River Delta area".HYDROLOGICAL PROCESSES 36.8(2022):16. |
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。