Effects of land-use patterns on in-stream nitrogen in a highly-polluted river basin in Northeast China
文献类型：SCI/SSCI论文
| 作者 | Bu H. M.; Zhang, Y.; Meng, W.; Song, X. F. |
| 发表日期 | 2016 |
| 关键词 | Land use Landscape metrics Nitrogen pollution Nitrate isotopes Nitrogen source contributions Isotope mixing models surface-water quality stable-isotopes nitrate cover nutrient catchments chemistry system |
| 英文摘要 | This study investigated the effects of land-use patterns on nitrogen pollution in the Haicheng River basin in Northeast China during 2010 by conducting statistical and spatial analyses and by analyzing the isotopic composition of nitrate. Correlation and stepwise regressions indicated that land -use types and landscape metrics were correlated well with most river nitrogen variables and significantly predicted them during different sampling seasons. Built-up land use and shape metrics dominated in predicting nitrogen variables over seasons. According to the isotopic compositions of river nitrate in different zones, the nitrogen sources of the river principally originated from synthetic fertilizer, domestic sewage/manure, soil organic matter, and atmospheric deposition. isotope mixing models indicated that source contributions of river nitrogen significantly varied from forested headwaters to densely populated towns of the river basin. Domestic sewage/manure was a major contributor to river nitrogen with the proportions of 76.4 f 6.0% and 62.8 2.1% in residence and farmland-residence zones, respectively. This research suggested that regulating built-up land uses and reducing discharges of domestic sewage and industrial wastewater would be effective methods for river nitrogen control. (C) 2016 Elsevier B.V. All rights reserved. |
| 出处 | Science of the Total Environment |
| 卷 | 553 |
| 页 | 232-242 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0048-9697 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43381]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Bu H. M.,Zhang, Y.,Meng, W.,et al. Effects of land-use patterns on in-stream nitrogen in a highly-polluted river basin in Northeast China. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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