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引用本文:李宝,丁士明,范成新,钟继承,张路,尹洪斌,赵斌.滇池福保湾间隙水氮磷分布及其与底泥微生物和磷酸酶相互关系.湖泊科学,2008,20(4):420-427. DOI:10.18307/2008.0403
LI Bao,DING Shi-ming,FAN Cheng-xin,ZHONG Ji-cheng,ZHANG Lu,YIN Hong-bin,ZHAO Bin.Distributions of nitrogen and phosphorus in interstitial waters in the sediments of Fubao Bay in Lake Dianchi and their relationships with the activities of microbe and alkaline phosphatase in the surface sediments. J. Lake Sci.2008,20(4):420-427. DOI:10.18307/2008.0403
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滇池福保湾间隙水氮磷分布及其与底泥微生物和磷酸酶相互关系
李宝1,2, 丁士明1, 范成新1, 钟继承1, 张路1, 尹洪斌1,2, 赵斌3
1.中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008;2.中国科学院研究生院, 北京 100049;3.西安建筑科技大学, 西安 710055
摘要:
在滇池福保湾不同区域应用Peeper(渗析膜式)技术,分析了底泥间隙水NH4+-N、PO43--P的垂向分布特征和近表层10cm内底泥的微生物活性(FDA)、碱性磷酸酶活性(APA),并对它们之间的相互关系进行了统计分析.结果表明,NH4+-N和PO43-浓度自上覆水向下层间隙水呈先升后降趋势,反映它们有自间隙水向上覆水扩散的潜在危害;底泥有机质(Loss-on-Ignition,LOI)、APA和FDA活性也有从表层底泥向下层逐步降低的趋势.在空间分布上,NH4+-N、PO43-浓度变化为河口区>湾心区>西部沿岸区>东部沿岸区,与沉积物中LOI、APA和FDA活性的大小顺序基本相同.间隙水NH4+-N浓度与表层10cm内底泥的APA和FDA活性具有显著正相关性(α=0.01),PO43-浓度与底泥APA和FDA活性具有负相关性,但相关系数很低.
关键词:  Peeper  营养盐  沉积物  微生物活性  碱性磷酸酶  滇池
DOI:10.18307/2008.0403
分类号:
基金项目:国家高技术研究发展计划(863)项目(2005AA601010050201);国家自然科学基金项目(20577053,40601087);中国科学院知识创新工程项目(KZCX3-SW-348)联合资助
Distributions of nitrogen and phosphorus in interstitial waters in the sediments of Fubao Bay in Lake Dianchi and their relationships with the activities of microbe and alkaline phosphatase in the surface sediments
LI Bao1,2, DING Shi-ming1, FAN Cheng-xin1, ZHONG Ji-cheng1, ZHANG Lu1, YIN Hong-bin1,2, ZHAO Bin3
1.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P.R.China;2.Graduate School of Chinese Academy of Sciences, Beijing 100049, P.R.China;3.Xi'an University of Architecture and Technology, Xi'an 710055, P.R.China
Abstract:
Peeper technique was used to sample the interstitial waters in the sediments of Fubao Bay in Lake Dianchi, and the vertical distributions of NH4+-N and PO43--P in the waters were analyzed. The activities of microbe (the activity of FDA) and alkaline phosphatase (APA) in the surface sediments were also studied. The results showed that concentrations of NH4+-N and PO43--P in the interstitial waters generally increased, then decreased, with the depth, reflecting a possible diffusion trend for these nutrients. The decreasing trend was observed for the contents of organic matter (Reflected by Loss-on-Ignition, LOI), the activity of FDA and the APA in the 10cm surface sediments. The order of concentrations of NH4+-N and PO43--P in the interstitial waters, as well as the LOI, the activity of FDA and the APA in the surface sediments, ranked as estuary> the center of the bay > the west coast of the bay > the east coast of the bay. Regression analyses showed that concentrations of NH4+-N in the interstitial water were positively correlated with the activity of FDA and the APA in the surface sediments (0-10cm), while the concentrations of PO43--P were negatively correlated with them and the coefficient was very low.
Key words:  Peeper  nutrients  sediment  activity of microbe  alkaline phosphatase  Lake Dianchi
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