Spatio-temporal characteristics and determinants of anthropogenic nitrogen and phosphorus inputs in an ecologically fragile karst basin: Environmental responses and management strategies
文献类型：期刊论文
| 作者 | Xu, Guoyu1,2,3; Xiao, Jie1,2; Oliver, David M.5; Yang, Zhiqi3,4; Xiong, Kangning1; Zhao, Zhongming6; Zheng, Lilin7; Fan, Hongxiang2; Zhang, Fuxiang2,3 |
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 133页码:16 |
| 关键词 | NANI&NAPI Temporal-temporal heterogeneity The Grid fractal dimension Environment responses Geographical detector model Determinant analysis |
| ISSN号 | 1470-160X |
| DOI | 10.1016/j.ecolind.2021.108453 |
| 通讯作者 | Xiong, Kangning(xiongkn@gznu.edu.cn) |
| 英文摘要 | Excessive nitrogen and phosphorus inputs to land and subsequent export to water via runoff leads to aquatic ecosystem deterioration. The WRB is the world's largest karst basin which is characterized by a fragile ecosystem coupling with high population pressure, and the transformation of intensive agriculture. Quantifying different sources of pollution in karst regions is challenging due to the complexity of landscape topography and geology coupled with high transmissivity and connectivity of subsurface hydrological systems. This results in large uncertainty associated with nitrogen (N) and phosphorus (P) flow pathways. This combination of factors contributes to the WRB being a high priority for quantitatively understanding the contribution of regional nutrient inputs and those of other major water quality determinants. Here we applied the latest statistical data (2000-2018) and simple quasi-mass-balance methods of net anthropogenic nitrogen and phosphorus inputs (NANI and NAPI) to estimate spatio-temporal heterogeneity of N and P inputs. The results show that while NANI and NAPI are first decreasing, this is followed by an increasing trend during 2000-2018, with average values of 11262.06 +/- 2732 kg N km(-2) yr(-1) and 2653.91 +/- 863 kg P km(-2) yr(-1) respectively. High N and P concentrations in the river drainage network are related to the spatial distribution of excessive inputs of N and P. Rapid urbanization, livestock farming and the conflicts between economic development and lagged-environmental management are the main reasons for the incremental regional N and P inputs. Management decisions on nutrient pollution in karst regions need careful consideration to reduce ecological impacts and contamination of karst aquifers. This study provides new insight for policy and decision making in the WRB, highlighting policy options for managing nutrient inputs and providing recommendations for closing the science-policy divide. |
| WOS关键词 | INDEX APPLICATION ; RIVERINE EXPORT ; RISK-ASSESSMENT ; FERTILIZER USE ; WATER ; CHINA ; BUDGETS ; EUTROPHICATION ; FLUXES ; LAND |
| 资助项目 | China Overseas Expertise Introduction Program for Discipline Innovation[D17016] ; Project of Science and Technology Program of Guizhou Province[5411 2017 Qiankehe Pingtai Rencai] ; World Top Discipline Program of Guizhou Province[125 2019 Qianjiao Keyan Fa] ; National Natural Science Foundation of China[42001109] ; Natural Science Foundation of Jiangsu Province[BK20201102] ; Nanjing Institute of Geography Limnology[NIGLAS2019QD005] |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000760197200002 |
| 出版者 | ELSEVIER |
| 资助机构 | China Overseas Expertise Introduction Program for Discipline Innovation ; Project of Science and Technology Program of Guizhou Province ; World Top Discipline Program of Guizhou Province ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province ; Nanjing Institute of Geography Limnology |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/172035]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xiong, Kangning |
| 作者单位 | 1.Guizhou Normal Univ, State Engn Technol Inst Karst Desertificat Contro, Sch Karst Sci, Guiyang 550001, Peoples R China 2.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Key Lab Watershed Geog Sci, Nanjing 210008, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Reg Sustainable Dev Modeling, Beijing 100101, Peoples R China 5.Univ Stirling, Fac Nat Sci, Biol & Environm Sci, Stirling FK9 4LA, Scotland 6.Kings Coll London, Dept Geog, London, England 7.East China Normal Univ, Sch Geog Sci, Key Lab Geog Informat Sci, Minist Educ, Shanghai 200241, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Guoyu,Xiao, Jie,Oliver, David M.,et al. Spatio-temporal characteristics and determinants of anthropogenic nitrogen and phosphorus inputs in an ecologically fragile karst basin: Environmental responses and management strategies[J]. ECOLOGICAL INDICATORS,2021,133:16. |
| APA | Xu, Guoyu.,Xiao, Jie.,Oliver, David M..,Yang, Zhiqi.,Xiong, Kangning.,...&Zhang, Fuxiang.(2021).Spatio-temporal characteristics and determinants of anthropogenic nitrogen and phosphorus inputs in an ecologically fragile karst basin: Environmental responses and management strategies.ECOLOGICAL INDICATORS,133,16. |
| MLA | Xu, Guoyu,et al."Spatio-temporal characteristics and determinants of anthropogenic nitrogen and phosphorus inputs in an ecologically fragile karst basin: Environmental responses and management strategies".ECOLOGICAL INDICATORS 133(2021):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。