南四湖湿地湖滨带优势植物凋落物分解研究  

Study on Litter Decomposition of Dominant Plants in Lakeside Zone of Nansi Lake Wetland

作　　者：王丽丽 马忍忍 张晓薇 郭超 刘国栋 Wang Lili;Ma Renren;Zhang Xiaowei;Guo Chao;Liu Guodong(School of Geography and Tourism,Qufu Normal University,Rizhao,Shandong 276826,China)

机构地区：[1]曲阜师范大学地理与旅游学院,山东日照276826

出　　处：《绿色科技》2022年第2期30-34,共5页Journal of Green Science and Technology

基　　金：山东省自然科学基金面上项目(编号:ZR2019MC058);山东省高等学校科技计划项目(编号:J18KB084);曲阜师范大学大学生创新创业训练计划(编号:XJ20200010)。

摘　　要：南四湖优势植物凋落物的分解研究是湿地物质循环和能量流动必不可少环节,是保持湿地多种功能的重要过程之一。采用单一凋落物方法,利用尼龙分解袋对当地优势植物芦苇和荷花的凋落物进行了分解研究。结果表明:在240 d的分解过程中,荷花凋落物的分解速率高于芦苇的分解速率,在分解前期62 d前,芦苇的分解速率基本与荷花持平,但在62~240 d中,芦苇的分解速率明显低于荷花速率;240 d后,植物芦苇、荷花的失重率分别为原始值的45.67%、45.27%;分解过程中的C/N变化、芦苇N值的波动变化不大,荷花的N变化极大,先迅速上升再迅速减少,明显影响了荷花分解的速率。Nansi Lake is the largest wetland catchment fresh water lake in North China.The decomposition of the dominant plant litter in Nansi Lake is an essential part of the wetland material cycle and energy flow,and is one of the important processes to maintain the wetland’s multiple functions.In terms of research methods,the single litter method and nylon decomposition bag were used to study local dominant plants reed and lotus.The results showed that the decomposition rate of lotus litter was higher than that of reed in 240 days.The decomposition rate of Phragmites australis was almost the same as that of lotus flower 62 days before decomposition.However,the decomposition rate of reed was significantly lower than that of lotus in 62d-240d.After 240 days,the weight loss rates of reed and lotus were 45.67%and 45.27%of the original value respectively.

关 键 词：凋落物 分解速率 C/N 温度敏感性 南四湖 

分 类 号：S715[农业科学—林学]