杭州西溪湿地生态系统不同群落营养元素的积累及分配特征  

The Nutrient Accumulation and Distribution Characteristics of the Different Communities in Xixi Wetland Ecosystem

作　　者：谢长永[1] 徐同凯[1] 钱爱爱[1] 宁皎莹[1] 陈波[1] 

机构地区：[1]杭州师范大学生命与环境科学学院,杭州310036

出　　处：《科技通报》2012年第11期220-227,共8页Bulletin of Science and Technology

基　　金：国家自然科学基金(40971041);杭州市属高校重点实验室科技创新项目(20100333T08);杭州市科技局社会发展科研专项(20100933B16)

摘　　要：对西溪湿地生态系统内菰(Zizania latifolia)群落、芦苇(Phragmites australis)群落和人工植物再力花(Thalia dealbata)群落中的土壤营养元素的空间分布、土壤营养元素储量以及三种优势植物营养元素的积累特征进行了初步分析研究。结果表明:人工栽培的再力花群落土壤TOC、TN和铵态氮含量较少,这主要是与土壤含水率有关;三者土壤营养元素垂直分布较为相似;三者植物叶以及穗和地下部分中N、P含量均较高;湿地植物群落(菰群落和芦苇群落)土壤TOC和TN储量比较高,而再力花群落土壤TP储量较高;芦苇积累TOC、TN、TP的含量远远高于其它两种植物;人工栽培的再力花群落水体内各元素含量均高于其它两种湿地植物群落的水体。The spatial distribution of soil elements and their contents in the three communities Zizania latifolia,community, Phragmites australis community and Thalia dealbata community are analyzed in the paper.The element aggregates in the three dominant plant species are also analyszed in the paper.The results show TN、TOC and ammonium nitrogen content of soil in artificial plant Thalia dealbata is less than the other two communities,this is mainly related with soil moisture content.The vertical distribution of three soil nutrient elements is relatively similar;The N,P content of three plants leaves,spike and underground part are higher;The soil TOC and TN reserves in wetland plant community are quite high,and the TP reserves of artificial plant Thalia dealbata is higher;The accumulated TOC,TN and TP of Phragmites australis are far higher than other two plants;Each element content of water in Artificial Thalia dealbata communitie is higher than the other community waters.

关 键 词：西溪湿地 植物群落 营养元素 积累和分布 

分 类 号：X171.7[环境科学与工程—环境科学]