Total phosphorus concentrations in surface water of typical agro- and forest ecosystems in China, 2004-2010
文献类型：SCI/SSCI论文
| 作者 | Xie J. |
| 发表日期 | 2014 |
| 关键词 | Chinese Ecosystem Research Network (CERN) total phosphorus (TP) surface water ecosystem type spatial variation land-use flow-analysis paddy soils catchment nitrogen losses river eutrophication reservoir runoff |
| 英文摘要 | The concentrations of total phosphorus (TP) from 83 surface water sampling sites in 29 of the Chinese Ecosystem Research Network (CERN) monitored ecosystems, representing typical agro- and forest ecosystems, were assessed using monitoring data collected between 2004 and 2010 from still and flowing surface water. Results showed that, TP concentrations were significantly higher in agro-ecosystems than those in forest ecosystems both for still and flowing surface water. For agroecosystems, TP concentrations in the southern area were significantly higher than those in the northern and northwestern areas for both still and flowing surface water, however no distinct spatial pattern was observed for forest ecosystems. In general, the median values of TP within agro- and forest ecosystems did not exceed the Class V guideline for still (0.2 mg center dot L-1) or flowing (0.4 mg center dot L-1) surface water, however, surface water at some agroecosystem sampling sites was frequently polluted by TP. Elevated concentrations were mainly found in still surface water at the Changshu, Fukang, Linze and Naiman monitored ecosystems, where exceedance (> 0.2 mg center dot L-1) frequencies varied from 43% to 78%. For flowing water, elevated TP concentrations were found at the Hailun, Changshu and Shapotou monitored ecosystems, where exceedance (> 0.4 mg center dot L-1) frequencies varied from 29% to 100%. Irrational fertilization, frequent irrigation and livestock manure input might be the main contributors of high TP concentrations in these areas, and reduced fertilizer applications, improvements in irrigation practices and centralized treatment of animal waste are necessary to control P loss in these TP vulnerable zones. |
| 出处 | Frontiers of Environmental Science & Engineering |
| 卷 | 8 |
| 期 | 4 |
| 页 | 561-569 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 2095-2201 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29498]  |
| 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 | Xie J.. Total phosphorus concentrations in surface water of typical agro- and forest ecosystems in China, 2004-2010. 2014. |
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。