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学科主题: Limnology; Marine & Freshwater Biology
题名: The effect of organic matter accumulation on phosphorus release in sediment of Chinese shallow lakes
作者: Liu, Yunbing1, 2; Guo, Yaxin1, 2; Song, Chunlei1; Xiao, Wenjuan1, 2; Huang, Daizhong1, 2; Cao, Xiuyun1; Zhou, Yiyong1
通讯作者: Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: organic matter ; alkaline phosphatase ; phosphorus release ; sediment ; anaerobic condition ; shallow lakes ; eutrophication
刊名: FUNDAMENTAL AND APPLIED LIMNOLOGY
发表日期: 2009
DOI: 10.1127/1863-9135/2009/0175-0143
卷: 175, 期:2, 页:143-150
收录类别: SCI
文章类型: Article
部门归属: [Liu, Yunbing; Guo, Yaxin; Song, Chunlei; Xiao, Wenjuan; Huang, Daizhong; Cao, Xiuyun; Zhou, Yiyong] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Liu, Yunbing; Guo, Yaxin; Xiao, Wenjuan; Huang, Daizhong] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [40730528]; Chinese Academy of Sciences [kzcx2-yw-426-01]; National Basic Research Program of China [2008CB418005]
类目[WOS]: Limnology ; Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
摘要: The effects of organic matter in sediment on phosphorus release were studied by field investigations in eight Chinese shallow freshwater lakes with different trophic status and a laboratory experiment. The sediment organic matter content paralleled the trophic status, ranging from 6.1 to 173.0 g kg(-1) (dry weight), with the mean value of 63.1 g kg(-1) (dry weight). It was positively proportional to Soluble reactive phosphorus concentration in the interstitial water in a form of exponential function, but inversely related to the sediment Fe/P ratio. The sediment alkaline phosphatase activity was significantly related not only to the organic matter content (r = 0.829, P < 0.01, n = 120), but also to the soluble reactive phosphorus concentration in interstitial water (r = 0.454, P < 0.01, n = 42). In the laboratory experiment, the addition of organic matter (dry materials of an aquatic macrophyte) into the sediment significantly enhanced alkaline phosphatase activity and soluble reactive phosphorus release. However, in the treatment with organic matter added and aeration, this release was generally prevented in spite of an increase in APA. Hence, sediment organic matter can effectively accelerate phosphorus release by enzymatic hydrolysis and anaerobic desorption. The latter mechanism seems to be more important.
英文摘要: The effects of organic matter in sediment on phosphorus release were studied by field investigations in eight Chinese shallow freshwater lakes with different trophic status and a laboratory experiment. The sediment organic matter content paralleled the trophic status, ranging from 6.1 to 173.0 g kg(-1) (dry weight), with the mean value of 63.1 g kg(-1) (dry weight). It was positively proportional to Soluble reactive phosphorus concentration in the interstitial water in a form of exponential function, but inversely related to the sediment Fe/P ratio. The sediment alkaline phosphatase activity was significantly related not only to the organic matter content (r = 0.829, P < 0.01, n = 120), but also to the soluble reactive phosphorus concentration in interstitial water (r = 0.454, P < 0.01, n = 42). In the laboratory experiment, the addition of organic matter (dry materials of an aquatic macrophyte) into the sediment significantly enhanced alkaline phosphatase activity and soluble reactive phosphorus release. However, in the treatment with organic matter added and aeration, this release was generally prevented in spite of an increase in APA. Hence, sediment organic matter can effectively accelerate phosphorus release by enzymatic hydrolysis and anaerobic desorption. The latter mechanism seems to be more important.
关键词[WOS]: ALKALINE-PHOSPHATASE ACTIVITY ; INTERSTITIAL WATER ; EUTROPHICATION ; DYNAMICS ; EXCHANGE ; RIVER
语种: 英语
WOS记录号: WOS:000270773100004
ISSN号: 1863-9135
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/7552
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Liu, Yunbing; Guo, Yaxin; Song, Chunlei; Xiao, Wenjuan; Huang, Daizhong; Cao, Xiuyun; Zhou, Yiyong.The effect of organic matter accumulation on phosphorus release in sediment of Chinese shallow lakes,FUNDAMENTAL AND APPLIED LIMNOLOGY,2009,175(2):143-150
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