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当前位置: 首页 > 文章 > 太湖沉水植物光补偿深度反演及影响因子分析 农业环境科学学报 2011,30 (10) 2099-2105
Position: Home > Articles > Inversion of Compensation Depth of Three Submerged Macrophytes and Its Influential Factors in Taihu Lake Journal of Agro-Environment Science 2011,30 (10) 2099-2105

太湖沉水植物光补偿深度反演及影响因子分析

作  者：
宋玉芝;王敏;赵巧华;张运林;秦伯强
单  位：
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;南京信息工程大学环境科学与工程学院
关键词：
沉水植物;光补偿深度;影响因子;太湖
摘  要：
水生植物在浅水湖泊生态系统中具有十分重要的作用,根据太湖常见的3种沉水植物苦草、狐尾藻、金鱼藻的光合速率与辐照度的关系,反演3种沉水植物的光补偿深度在太湖的空间分布,并根据水生植物的调查资料和文献资料来检验反演的效果。在此基础上,通过多元回归分析和因子方差贡献大小分析,探讨有机悬浮颗粒物、无机悬浮颗粒物、叶绿素a3种生态因子对沉水植物光补偿深度的影响。结果表明,3种沉水植物的光补偿深度总体上表现出从太湖东侧向湖心区、河口区及太湖西南方向逐渐减小的态势,对于特定的湖区,3种沉水植物的光补偿深度大小基本为苦草>金鱼藻>狐尾藻;3种沉水植物光补偿深度分别与有机悬浮颗粒物、无机悬浮颗粒物以及叶绿素a3因子呈显著回归关系。有机悬浮颗粒物、叶绿素a对3种沉水植物光补偿深度有显著的负作用,无机悬浮颗粒物有微弱的负作用,3因子对沉水植物光补偿深度影响大小依次是有机悬浮颗粒物>叶绿素a>无机悬浮颗粒物。
译  名：
Inversion of Compensation Depth of Three Submerged Macrophytes and Its Influential Factors in Taihu Lake
作  者：
SONG Yu-zhi1,WANG Min1,ZHAO Qiao-hua1,ZHANG Yun-lin2,QIN Bo-qiang2(1.College of Environmental Science & Engineering,Nanjing University of Science Information & Technology,Nanjing 210044,China;2.State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China)
关键词：
submerged macrophyte;light compensation depth;influence factor;Taihu Lake
摘  要：
Aquatic macrophytes play a very important role in the shallow lake ecosystem.In this work we investigated the spatial distribution of retrieval light compensation depth of three submerged macrophytes including Vallisneria natans,Ceratophyllum demersum,Myriophyllum spicatum commonly found in Taihu Lake,which was based on the relationship between photosynthetic rate of submerged macrophytes and light intensities.Inversion effects were obtained by comparing the distributing results with literature data.Furthermore,we discussed the impact of inorganic suspended particulate matter,organic suspended particulate matter,and chlorophyll a on light compensation depth of submerged plants by means of multivariate regression analysis and variance analysis.The results showed that the light compensation depth of three species of submerged macrophytes gradually decreased from the east epigeal zone,to the central zone,estuary and the southwest zone of Taihu Lake.In some particular regions,the light compensation depth of three submerged macrophytes was in the order:V.natans>C.demersum>M.spicatum.It was discovered that significant regression relationship between light compensation depth of submerged plants and ecological factors including organic suspended particulate matter,inorganic suspended particulate matter,and chlorophyll a.Organic suspended particulate matter,and chlorophyll a had a significant negative effect on light compensation depth of submerged macrophytes,but inorganic suspended particulate matter having a weak positive effect.The effects of three factors on light compensation depth of submerged macrophytes followed an order of organic suspended particulate matter>chlorophyll a>inorganic suspended particulate matter.Hence,this research provided some meaning results,which should be a potential reference for restoration and rehabilitation of submerged macrophytes in Taihu Lake.

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