| 湖泊沉积物中磷释放的研究进展 |
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| 引用本文： | 高丽,杨浩,周健民.湖泊沉积物中磷释放的研究进展[J].土壤,2004,36(1):12-15,36. |
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| 作者姓名： | 高丽 杨浩 周健民 |
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| 作者单位： | 土壤与农业可持续发展国家重点实验室,中国科学院南京土壤研究所,南京,210008 |
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| 摘 要： | 沉积物是湖泊营养物质的重要蓄积库,也是湖泊内源性P的主要来源。沉积物中部分固定的P可通过分解或溶解作用而释放磷酸盐到沉积物间隙水中,然后通过扩散作用或表层沉积物的再悬浮作用而释放到上覆水体中。本文就目前对沉积物P释放的影响因素及释放机制的研究进展作一简要概述。
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| 关 键 词： | 湖泊沉积物 释放 间隙水扩散 释放机制 |
RESEARCH PROGRESS ON PHOSPHORUS RELEASE FROM LAKE SEDIMENTS |
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| GAO Li,YANG Hao and ZHOU Jian-min.RESEARCH PROGRESS ON PHOSPHORUS RELEASE FROM LAKE SEDIMENTS[J].Soils,2004,36(1):12-15,36. |
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| Authors: | GAO Li YANG Hao and ZHOU Jian-min |
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| Institution: | State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008,State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008 and State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008 |
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| Abstract: | The sediments are the important reservoirs of mineral nutrients and sedimentary P can function as a main internal P source for the lakes. Part of the P in the sediments can be released to the sediment interstitial water by decomposing or dissolving in the form of phosphate. Subsequently, the phosphate in the interstitial water may be released to the overlying water by diffusion or re-suspension of surface sediments. The factors which affect P release from sediments and the release mechanisms are briefly summarized in this paper. |
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| Keywords: | Lake sediments Release Diffusion of interstitial water Release mechanism |
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