基于分解袋法的闽江河口芦苇和短叶茳芏枯落物的残留率和分解速率  

Residual Percentages and Decomposition Rates of Phragmites australis and Cyperus malaccensis Litters in the Min River Estuary based on Litter Bag Technique

作　　者：李晓[1,2,3] 孙志高[1,2,3] 何涛[2,3] 高会[2,3] 王华[2,3] 王杰[2,3] LI Xiao;SUN Zhigao;HE Tao;GAO Hui;WANG Hua;WANG Jie(Institute of Geography,Fujian Normal University,Fuzhou 350007,Fujian,P.R. China;Key Laboratory of Humid Subtropical Eco-geographical Process (Fujian Normal University),Ministry of Education,Fuzhou 350007,Fujian,P.R. China;Fujian Provincial Key Laboratory for Subtropical Resources and Environment,Fujian Normal University,Fuzhou 350007,Fujian,P.R.China)

机构地区：[1]福建师范大学地理研究所,福建福州350007 [2]福建师范大学湿润亚热带生态地理过程教育部重点实验室,福建福州350007 [3]福建师范大学福建省亚热带资源与环境重点实验室,福建福州350007

出　　处：《湿地科学》2019年第1期94-99,共6页Wetland Science

基　　金：福建省公益类科研院所重点项目(2016R1032-1);福建省"闽江学者奖励计划"项目;福建省"高等学校新世纪优秀人才"项目;福建师范大学地理科学学院科研创新基金项目资助

摘　　要：以闽江河口鳝鱼滩的芦苇(Phragmites australis)群落、短叶茳芏(Cyperus malaccensis)群落和芦苇+短叶茳芏群落植物枯落物为研究对象,采用分解袋法,2016年2月19日～2017年2月28日期间,研究了不同群落中两种植物枯落物的残留率和分解速率。结果表明,芦苇群落和芦苇+短叶茳芏群落中的芦苇枯落物的残留率分别为35.87%和28.67%,短叶茳芏群落和芦苇+短叶茳芏群落中的短叶茳芏枯落物的残留率分别为7.00%和9.57%;短叶茳芏群落和芦苇+短叶茳芏群落中的短叶茳芏枯落物的分解速率分别为0.007 292 g/d和0.006 150g/d;芦苇+短叶茳芏群落和芦苇群落中的芦苇枯落物的分解速率分别为0.003 243 g/d和0.002 607 g/d。芦苇+短叶茳芏群落中的芦苇枯落物分解的更快;芦苇+短叶茳芏群落中的短叶茳芏枯落物分解的较慢。To investigate the residual percentages and decomposition rates of Phragmites australis and Cyperus malaccensis in Shanyutan wetlands of the Min River estuary, in situ decomposition experiment was conducted in Phragmites australis community, Cyperus malaccensis community and Phragmites australis+Cyperus malaccensis community from February 19, 2016 to February 28,2017 based on litter bag technique. The results showed that the residual percentages of litters of Phragmites australis in Phragmites australis community and Phragmites australis+Cyperus malaccensis community were 35.87% and 28.67%, and those of litters of Cyperus malaccensis in Cyperus malaccensis community and Phragmites australis+Cyperus malaccensis community were 7.00% and 9.57%. The decomposition rates of litters of Cyperus malaccensis in Cyperus malaccensis community and Phragmites australis+Cyperus malaccensis community were respectively 0.007 292 g/d and 0.006 150 g/d, and those of litters of Phragmites australis in Phragmites australis+Cyperus malaccensis community and Phragmites australis community were respectively 0.003 243 g/d and 0.002 607 g/d, indicating that the decomposition of Phragmites australis in Phragmites australis+Cyperus malaccensis community were faster than those in Phragmites australis community whereas the decomposition of Cyperus malaccensis in Phragmites australis+Cyperus malaccensis community were slower than those in Cyperus malaccensis community.

关 键 词：枯落物分解 分解袋法 潮滩沼泽 闽江口 

分 类 号：X171.1[环境科学与工程—环境科学]