Modeling nitrogen export from 2539 lowland artificial watersheds in Lake Taihu Basin, China: Insights from process-based modeling
文献类型：期刊论文
| 作者 | Huang, Jiacong; Cui, Zhen; Tian, Feng; Huang, Qi; Gao, Junfeng; Wang, Xuesong; Li, Jun |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2020 |
| 卷号 | 581 |
| 英文摘要 | Excess nitrogen (N) poses a risk of aquatic eutrophication and ecosystem degradation to downstream areas. However, it is poorly investigated in lowland artificial watersheds (polders) due to their complex hydrological processes. This study investigated the N export and retention at all 2539 polders in Lake Taihu Basin, China using a nitrogen dynamic model (NDP), specially developed for polders. The response of N export to global climate change (air temperature and precipitation) and human activities (N fertilization) in the future (2014-2049) were quantified through scenario simulations. The simulation results revealed that these polders have a larger N export coefficient (a spatially-averaged value of 15.3 kg N/ha/yr) than that of non-polder areas (similar to 6.7 kg N/ha/yr) mainly due to their intensive agricultural activities and high population density. However, these polders also showed considerable N retention with estimated retention rates of 52.7-54.6%. In model results from the future (2014-2049), human activities (N fertilization) determined the magnitude of polder N export, while global climate change determined the fluctuation of polder N export. The estimation of polder N sources, sinks and retention capacity at a watershed scale can be used to identify the hotspot of N loss, and thus guide decision-making to control N loss. |
| 源URL | [http://159.226.73.51/handle/332005/20107]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Huang, Jiacong,Cui, Zhen,Tian, Feng,et al. Modeling nitrogen export from 2539 lowland artificial watersheds in Lake Taihu Basin, China: Insights from process-based modeling[J]. JOURNAL OF HYDROLOGY,2020,581. |
| APA | Huang, Jiacong.,Cui, Zhen.,Tian, Feng.,Huang, Qi.,Gao, Junfeng.,...&Li, Jun.(2020).Modeling nitrogen export from 2539 lowland artificial watersheds in Lake Taihu Basin, China: Insights from process-based modeling.JOURNAL OF HYDROLOGY,581. |
| MLA | Huang, Jiacong,et al."Modeling nitrogen export from 2539 lowland artificial watersheds in Lake Taihu Basin, China: Insights from process-based modeling".JOURNAL OF HYDROLOGY 581(2020). |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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