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Diffuse nutrient losses and the impact factors determining their regional differences in four catchments from North to South China

文献类型：期刊论文

作者Zhang, Yongyong1; Zhou, Yujian1; Shao, Quanxi2; Liu, Hongbin3; Lei, Qiuliang3; Zhai, Xiaoyan4,5; Wang, Xuelei6
刊名JOURNAL OF HYDROLOGY
出版日期2016-12-01
卷号543页码:577-594
关键词Diffuse nutrient losses Carriers Distributed water system model Multivariate statistics Climate Underlying surface
ISSN号0022-1694
DOI10.1016/j.jhydrol.2016.10.031
通讯作者Zhang, Yongyong(zhangyy003@igsnrr.ac.cn)
英文摘要Diffuse nutrient loss mechanism is complicated and shows remarkably regional differences due to spatial heterogeneities of underlying surface conditions, climate and agricultural practices. Moreover, current available observations are still hard to support the identification of impact factors due to different time or space steps. In this study, an integrated water system model (HEQM) was adopted to obtain the simulated loads of diffuse components (carriers: runoff and sediment; nutrient: total nitrogen (TN) and total phosphorous (TP)) with synchronous scales. Multivariable statistical analysis approaches (Analysis of Similarity and redundancy analysis) were used to assess the regional differences, and to identify impact factors as well as their contributions. Four catchments were selected as our study areas, i.e., Xiahui and Zhangjiafen Catchments of Miyun Basin in North China, Yuliang and Tunxi Catchments of Xin'anjiang Basin in South China. Results showed that the model performances of monthly processes were very good for runoff and good for sediment, TN and TP. The annual average coefficients of all the diffuse components in Xin'anjiang Basin were much greater than those in Miyun Basin, and showed significantly regional differences. All the selected impact factors interpreted 72.87-82.16% of the regional differences of carriers, and 62.72-71.62% of those of nutrient coefficients, respectively. For individual impact factor categories, the critical category was geography, followed by land-use/cover, carriers, climate, as well as soil and agricultural practices in Miyun Basin, or agricultural practices and soil in Xin'anjiang Basin. For individual factors, the critical factors were locations for the carrier regional differences, and carriers or chemical fertilizer for the nutrient regional differences. This study is expected to promote further applications of integrated water system model and multivariable statistical analysis in the diffuse nutrient studies, and provide a scientific support for the diffuse pollution control and management in China. (C) 2016 Elsevier B.V. All rights reserved.
WOS关键词NONPOINT-SOURCE POLLUTION ; MULTIVARIATE STATISTICAL-ANALYSIS ; RAINFALL-RUNOFF MODELS ; WATER ASSESSMENT-TOOL ; LAND-USE CHANGE ; CLIMATE-CHANGE ; BIOGEOCHEMICAL PROCESSES ; PARAMETER SENSITIVITY ; AUTOMATIC CALIBRATION ; MANAGEMENT-PRACTICES
资助项目Natural Science Foundation of China[41671024] ; Natural Science Foundation of China[41301019] ; Special Fund for Agroscientific Research in the Public Interest[201303089] ; China Youth Innovation Promotion Association CAS[2014041] ; Program for Bingwei Excellent Talents in IGSNRR CAS[2015RC201]
WOS研究方向Engineering ; Geology ; Water Resources
语种英语
WOS记录号WOS:000390735900032
出版者ELSEVIER SCIENCE BV
资助机构Natural Science Foundation of China ; Special Fund for Agroscientific Research in the Public Interest ; China Youth Innovation Promotion Association CAS ; Program for Bingwei Excellent Talents in IGSNRR CAS
源URL[http://ir.igsnrr.ac.cn/handle/311030/65231]  
专题中国科学院地理科学与资源研究所
通讯作者Zhang, Yongyong
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
2.Leeuwin Ctr, CSIRO Data61, 65 Brockway Rd,Floreat Pk, Wembly, WA 6014, Australia
3.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Nonpoint Pollut Control, Minist Agr, Beijing 100081, Peoples R China
4.China Inst Water Resources & Hydropower Res, Beijing 100038, Peoples R China
5.Minist Water Resources, Res Ctr Flood & Drought Disaster Reduct, Beijing 100038, Peoples R China
6.Minist Environm Protect, Satellite Environm Ctr, Beijing 100094, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yongyong,Zhou, Yujian,Shao, Quanxi,et al. Diffuse nutrient losses and the impact factors determining their regional differences in four catchments from North to South China[J]. JOURNAL OF HYDROLOGY,2016,543:577-594.
APA Zhang, Yongyong.,Zhou, Yujian.,Shao, Quanxi.,Liu, Hongbin.,Lei, Qiuliang.,...&Wang, Xuelei.(2016).Diffuse nutrient losses and the impact factors determining their regional differences in four catchments from North to South China.JOURNAL OF HYDROLOGY,543,577-594.
MLA Zhang, Yongyong,et al."Diffuse nutrient losses and the impact factors determining their regional differences in four catchments from North to South China".JOURNAL OF HYDROLOGY 543(2016):577-594.

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来源：地理科学与资源研究所

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