摘要
为了研究三江平原孤立沼泽湿地中植物群落的变化,采用样方调查法,对比研究了1975年与2017年三江平原孤立沼泽湿地中植物群落的特征。研究结果表明,三江平原孤立沼泽湿地中植物群落的物种丰富度平均值由1975年的2.015种/m2减小到2017年的1.297种/m2;33种主要物种的平均多度值由1975年的2.57减小到2017年的2.23;植物的高度总体上在变矮,6月和7月小叶章的高度平均值从1975年的93.36 cm下降至2017年的74.97 cm;1975年和2017年,孤立沼泽湿地中的共有主要物种和灌丛类物种的频度值、植物群落的物种丰富度都大于非孤立沼泽湿地;与1975年相比,2017年,三江平原孤立沼泽湿地、非孤立沼泽湿地中主要物种的平均高度分别降低了15.56 cm、33.60 cm,三江平原沼泽湿地中的植物在普遍变矮。
In order to study the changes of plant communities in isolated marsh wetland of Sanjiang Plain,the characteristics of plant communities in isolated marsh wetlands in Sanjiang Plain in 1975 and 2017 were compared by using quadrat survey methods.The results showed that the average species richness of plant communities in isolated marsh wetlands in Sanjiang Plain decreased from 2.015 species per square meter in 1975 to 1.297 species per square meter in 2017.The average abundance of 33 major species decreased from 2.57 in 1975 to 2.23 in 2017.The average height of Calamagrostis angustifolia in June and July decreased from 93.36 cm in 1975 to 74.97 cm in 2017.In 1975 and 2017,the frequency values of major species and shrub species and the species richness of plant communities in isolated marsh wetlands were higher than those in non-isolated marsh wetlands.Compared with those in 1975,the average height of major species in isolated and non-isolated marsh wetlands in 2017 decreased by 15.56 cm and 33.60 cm,respectively.In 2017,plants in marsh wetlands of Sanjiang Plain generally became shorter.
作者
郭乃旭
刘吉平
管强
GUO Naixu;LIU Jiping;GUAN Qiang(College of Tourism and Geosciences,Jilin Normal University,Siping 136000,Jilin,P.R.China;Key Laboratory of Wetland Ecology and Environment,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,Jilin,P.R.China)
出处
《湿地科学》
CSCD
北大核心
2023年第3期470-475,共6页
Wetland Science
基金
国家自然科学基金项目(42271125)
国家重点研发计划项目(2022YFF1300900)资助。
关键词
孤立沼泽湿地
植物群落
物种丰富度
三江平原
isolated marsh wetland
plant community
species richness
Sanjiang Plain
