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范成新,相崎守弘.好氧和厌氧条件对霞浦湖沉积物-水界面氮磷交换的影响.湖泊科学,1997,9(4):337-342. DOI:10.18307/1997.0408
Fan Chengxi,Morihiro Aizaki.Effects of aerobic and anaerobic conditions on exchange of nitrogen and phosphorus across sediment-water interface in Lake Kasumigaura. J. Lake Sci.1997,9(4):337-342. DOI:10.18307/1997.0408
好氧和厌氧条件对霞浦湖沉积物-水界面氮磷交换的影响
Effects of aerobic and anaerobic conditions on exchange of nitrogen and phosphorus across sediment-water interface in Lake Kasumigaura
投稿时间:1996-08-02  修订日期:1996-11-07
DOI:10.18307/1997.0408
中文关键词: 氮磷交换  水土界面  好氧和厌氧条件  霞浦湖
Keywords: Nitrogen and phosphorus exchange  sediment-water interface  aerobic and anaerobic conditioris  Lake Kasumigaura
基金项目:
作者单位
范成新 中国科学院南京地理与湖泊研究所, 南京 210008 
相崎守弘 日本岛根大学生物资源科学部 
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全文下载次数: 1955
中文摘要:
      在实验室控制条件下,研究了日本霞浦湖土浦湾和湖心区底泥中形态氮磷,在好氧和厌氧条件下水土界面交换量变化及差异.结果表明:好氧条件下,NO3--N、NO2--N、NH4+-N、和PO43--P均有释放作用产生,量值多数较小.DTN和DTP则净释放作用接近零;厌氧条件下,NO3--N和NO2--N呈负释放状态,NH4+-N和PO43--P的释放速率是好氧条件下的2-8倍.比较实验柱样品中营养物含量和释放结果对应关系表明,沉积物中间隙水与湖水中营养物含量在水土界面所形成的浓度差是决定其在好氧或厌氧条件下释放作用大小的主要因素之一.
Abstract:
      The variations and difference of the formal nitrogen and phosphorus exchanges across the sediment-water interface in Tsuchiura Bay and the central part of Lake Kasumigaura were studied under a laboratorial control of aerobic and anaerobic conditions, the results show that in aerobic, the released NO3--N, NO2--N, NH4+-N and PO43--P observed are smaller than in anaerobic. And the exchanged DTN and DTP were in fluctuation states, the net release nearing to zero. In anaerobic. an obvious release occurred for the most of nutrients, the release rates of NH4+-N and PO43--P were 2-8 times as much as in aerobic. By a comparison between the sediment samples in the corresponding nutrient concentrations and their release rates, a conclusion is drawn that the nutrient content ratio, at the vSediment-water interface, namely the differenciation between the intervStitial and the superficial lake water, was a decisive factor of the release rate in quantity.
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