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引用本文:黄蔚,陈开宁.沉积物理化性质与沉水植物鲜重、多样性指数及种的饱和度相关性.湖泊科学,2010,22(4):545-551. DOI:10.18307/2010.0410
HUANG Wei,CHEN Kaining.The correlation between the physics-chemical properties of sediments and species satu-ration, fresh weight and diversity index of submerged macrophytes. J. Lake Sci.2010,22(4):545-551. DOI:10.18307/2010.0410
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沉积物理化性质与沉水植物鲜重、多样性指数及种的饱和度相关性
黄蔚1,2, 陈开宁1
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
摘要:
在沉水植物的生活史中,沉积物提供植物固着基质和所需的大量营养元素,对沉水植物的兴衰有长期且深远的影响.对太湖沉积物理化性质与沉水植物生物量、种的饱和度和物种多样性之间的相关关系进行研究.数据的典型相关分析表明,两组数据的第一典型相关系数为0.795,达到显著水平.最后的典型变量冗余分析显示,沉水植物指标形成的第一典型分量能解释沉积物指标变化的26.75%.但是,沉水植物指标的变化中的56.52%不能被沉积物的第一典型分量解释.沉水植物的第一典型变量对沉积物氮磷比有一定预测能力(多重相关的平方0.5258),而对含水率几乎没有预测能力(0.0280).来自沉积物的第一典型变量对沉水植物的鲜重(0.7503)、香农-威纳指数(0.4841)和种的饱和度(0.4613)都有一定预测能力.中层沉积物(5-10cm)和底层沉积物(10-15cm)理化性质与沉水植物的相关指标分析结果显示,数据之间相关性不显著.表明中下层沉积物对沉水植物影响不明显.
关键词:  沉水植物  沉积物  粒度  氮磷比  香农-威纳指数  典型相关分析  太湖
DOI:10.18307/2010.0410
分类号:
基金项目:江苏省科技厅社会发展项目(BE2008690、BS2007161);国家自然科学基金项目(30670373);国家科技支撑规划项目(2006BAC10B03);国家水污染治理专项巢湖项目(2008ZX07103-005)资助
The correlation between the physics-chemical properties of sediments and species satu-ration, fresh weight and diversity index of submerged macrophytes
HUANG Wei1,2, CHEN Kaining1
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 University of Chinese Academy of Sciences, Beijing 100049, P. R. China
Abstract:
In the life history of submerged macrophyte,they obtain most of their nutrients from the sediment. The properties of sediment exert an important effect on the growth of aquatic plant. We analyzed the correlations between the physics-chemical properties of sediments and submerged macrophyte parameters. The correlation analysis showed that physics-chemical properties of sediments explained 56. 52% variations of submerged macrophyte, while characteristics of submerged macrophyte only explain 26. 75% variations of physics-chemical properties of sediments. The first canonical variables of the submerged macrophytes explained variation of TP/TN to some extent (Squared multiple correlations is 0.5258), but could not explain variation of water content well (0.0280). Variations of Fresh weight (0.7503), Shannon-Wiener index (0.4841)and Species saturation (0.4613) could be explained by the first canonical variable of the surface sediment parameters well. Additionally,Canonical Correlation Analysis revealed that only weak correlation existed between subsurface sediment parameters (5一15cm depth) and submerged macrophyte parameters.
Key words:  Submerged macrophyte  sediment  grain size  total nitrogen/total phosphorus  Shannon-Wiener index  Canonical Correla-tion Analysis  Lake Taihu
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