| 大宁河回水区消落带土壤磷释放动力学研究 |
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| 引用本文： | 张晨光,徐德星,张乃明,郑丙辉.大宁河回水区消落带土壤磷释放动力学研究[J].土壤通报,2011(5):1159-1164. |
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| 作者姓名： | 张晨光 徐德星 张乃明 郑丙辉 |
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| 作者单位： | 云南农业大学资源与环境学院;蓝星环境工程有限公司;中国环境科学研究院河流与海岸带环境研究室; |
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| 基金项目： | 科技部国际(中德)合作项目(2007DFA90510)资助 |
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| 摘 要： | 以三峡大宁河回水区消落带采集的6个土壤样品为研究对象,在室内模拟条件下,通过磷释放动力学实验,研究了三峡入库河流大宁河消落带土壤磷释放动力学特征,并分析了样品组成特征对释放动力学的影响,结果表明:指数动力学模型可以很好的拟合大宁河回水区消落带土壤样品磷释放动力学特征,前25 h为快反应,磷释放速度较大,随后进入慢反应,逐渐达到最大磷释放量;样品磷释放动力学特征与总氮、总磷和有机质等理化指标相关性较弱;样品磷释放动力学特征与Fe/Al-P的呈现极显著正相关关系,与Ca-P和O-P的相关性较弱,这说明样品中磷的释放量主要受Fe/Al-P含量控制。
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| 关 键 词： | 大宁河 回水区 消落带 磷 |
Phosphorus Release Kinetics of the Soils from the Backwater-Fluctuating Zones of Daning River |
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| ZHANG Chen-guang ,XU De-xing ,ZHANG Nai-ming ,ZHENG Bing-hui.Phosphorus Release Kinetics of the Soils from the Backwater-Fluctuating Zones of Daning River[J].Chinese Journal of Soil Science,2011(5):1159-1164. |
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| Authors: | ZHANG Chen-guang XU De-xing ZHANG Nai-ming ZHENG Bing-hui |
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| Institution: | ZHANG Chen-guang 1,XU De-xing 2,ZHANG Nai-ming 1,ZHENG Bing-hui 3(1.College of Resources and Environment of Yunnan Agricultural University,Kunming 650201,China,2.Blue star Environmental Engineering CO.,Ltd,Beijing 101318,3.River and Coastal Environment Research Center,Chinese Research Academy of Environmental Sciences,Beijing 100012,China) |
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| Abstract: | Phosphorus release kinetics characteristics of the sediments collected from six backwater-fluctuating zones from Daning River in the Three Gorges Reservoir were determined in laboratory simulating condition through the release kinetic experiments,and the relationship between the sediment composition and their phosphorus release characteristics was also investigated.An exponential kinetics model was used to fit the phosphorus release characteristics of the sediments from the backwater-fluctuating zones.The r... |
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| Keywords: | Daning River Backwater reach Water-level-fluctuating zone Phosphorus |
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