Seasonal change of non-point source pollution-induced bioavailable phosphorus loss: A case study of Southwestern China
文献类型：SCI/SSCI论文
| 作者 | Gao Y. |
| 发表日期 | 2012 |
| 关键词 | Bioavailable phosphorus (BAP) Purple soil Watershed Eutrophication Water environment Non-point source mass-balance approach particulate phosphorus hillslope cropland sichuan basin stream dynamics catchment transport uk forest |
| 英文摘要 | Bioavailable phosphorus (P) losses due to agriculture activity in a purple soil watershed in the Sichuan Basin of Southwestern China were monitored to define the hydrological controls of P transport. Our results indicate that the proportion of P that was transported in particulate form increased in the rainy season, and that the mass of total bioavailable P (BAP) loads exhibited seasonal fluctuations, wherein the majority (over 90%) was observed to have been exported between June and September. The proportion of bioavailable dissolved P (BDP) in the BAP discharge budget in the watershed varied between 11% and 15% during the monitoring period. The bioavailable particulate P (BPP) and BDP concentrations of stream water under rainstorm events increased by over 40% in comparison to their annual mean concentrations, and the annual BAP load was primarily dominated by the loads that occurred during rainstorm events in the study year. BAP concentration in groundwater significantly fluctuated with the seasons, and the ratio of total BAP in groundwater to that in surface water gradually increased during the rainy season. Thus, the impact of agriculture on the water quality of this watershed becomes clearly evident. (C) 2011 Elsevier B.V. All rights reserved. |
| 出处 | Journal of Hydrology |
| 卷 | 420 |
| 页 | 373-379 |
| 收录类别 | SCI |
| ISSN号 | 0022-1694 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/26924]  |
| 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 | Gao Y.. Seasonal change of non-point source pollution-induced bioavailable phosphorus loss: A case study of Southwestern China. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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