滆湖大型底栖动物群落分布和氮磷因子的相关分析

陈志宁<sup>1; 2</sup>; 张红高<sup>1; 2</sup>; 周崴<sup>1; 2</sup>; 沈丽娟<sup>1; 2</sup>

引用本文:	陈志宁，张红高，周崴，沈丽娟.滆湖大型底栖动物群落分布和氮磷因子的相关分析[J].环境监控与预警,2016,8(1):45-50
	CHEN Zhi ning，ZHANG Hong gao，ZHOU Wei，SHEN Li juan.Analysis on the Relationship between the Distribution of Macrobenthos Community and Nitrogen Phosphorus Factor in the Gehu Lake[J].Environmental Monitoring and Forewarning,2016,8(1):45-50

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滆湖大型底栖动物群落分布和氮磷因子的相关分析
陈志宁，张红高，周崴，沈丽娟^1,2
1.常州市环境监测中心，江苏常州 213014;2.江苏省环境保护水环境生物监测重点实验室，江苏常州 213014

摘要:

于2012年12月—2013年11月对滆湖水体进行了调查，分析了水体氮、磷及大型底栖动物的时空分布，初步探讨大型底栖动物群落结构与氮、磷环境因子的关系。结果表明，滆湖水体的ρ（TN）在冬春季较高，ρ（TP）四季的差异不大，在空间分布上，北部湖区的ρ（TN）、ρ（TP）均高于南部湖区；大型底栖动物出现频率最高的为霍甫水丝蚓和中国长足摇蚊，其丰度在时间上均表现为秋季＞夏季＞冬季＞春季，在空间上的规律性不明显；CCA分析表明滆湖大型底栖动物群落结构随季节变化规律显著，且氮含量是滆湖底栖动物群落结构的重要影响因子；对优势种的丰度与氮磷的相关性分析结果显示，滆湖底栖动物优势种与TN和NO^-₃-N有显著的负相关关系。

关键词: 大型底栖动物氮磷时空分布滆湖

DOI：

分类号:X826

基金项目:江苏省环境监测基金资助项目（1313）；国家科技重大专项基金资助项目（2012ZX07506-003，2012ZXO7101-007）

Analysis on the Relationship between the Distribution of Macrobenthos Community and Nitrogen Phosphorus Factor in the Gehu Lake

CHEN Zhining，ZHANG Honggao，ZHOU Wei，SHEN Lijuan^1,2

1.Changzhou Environmental Monitoring Center，Changzhou，Jiangsu 213014，China;2.Jiangsu Provincial Environmental Protection Key Laboratory of Water Environmental Biological Monitoring，Changzhou，Jiangsu 213014，China

Abstract:

Spatial and temporal variations of nitrogen and phosphorus in water and macrobenthos were analyzed here in the Gehu Lake from December 2012 to November 2013. The potential relationship between macrobenthos community structure and nitrogen phosphorus factor were also discussed. The one year monitoring data indicated thatρ（TN） was high in winter and spring，while ρ（TP） had little variation among four seasons. The content of ρ（TN） and ρ（TP） in the northern part of the lake were much higher than that in the southern part. Limnodrilus hoffmeisteri andTanypus chinensis were dominant and the density was the highest in autumn，followed by summer and winter，and the lowest in spring. Spatial changes were not significant here. Based on the canonical correspondence analysis （CCA），the community structure variation was heavily dependent on the seasons，and nitrogen played a key role in shaping the macrobenthos community structure in the Gehu Lake. Besides，the relationship between the density of dominant species and the nitrogen phosphorus nutrients showed that the distribution of dominant species was significantly negatively related to the content of TN and NO-3-N.

Key words: Macrobenthos Nitrogen Phosphorus Spatial and temporal variation Gehu Lake