摘要
黄河三角洲国际重要湿地生物多样性保护工程于2019年动工,本研究基于修复区内大型底栖动物群落组成特点及其与环境因子的相关关系,分析大型底栖动物群落恢复特征,了解该地区的生态系统健康状况,评估保护工程实施三年后修复区湿地生态系统演替阶段及修复效果。结果表明:2022年春、夏、秋三季共采集到大型底栖动物16种,隶属于5门6纲15科,昆虫纲动物在物种组成中占据优势地位;大型底栖动物密度和生物多样性指数的时空差异均不显著(P>0.05);大型底栖动物生物量存在显著的季节差异,表现为秋季(2.89 g/m^(2))>夏季(1.95 g/m^(2))>春季(1.90 g/m^(2)),秋季与春季和夏季间均存在显著差异(P<0.05),空间差异不显著(P>0.05)。与环境因子的相关性分析结果显示,蠓科一种(Ceratopogonidae sp.)、石缨虫属一种(Laonome sp.)、椭圆萝卜螺(Radix swinhoei)、尖口圆扁螺(Hippeutis cantori)等物种密度与电导率、盐度、总碳、铵盐和亚硝酸盐等指标显著相关(P<0.01)。快速生物综合评价指数评定修复区为“亚健康”状态。本研究通过对黄河三角洲湿地修复区大型底栖动物群落特征以及生态健康评价的分析,为修复区底栖动物群落的演替规律研究提供基础数据和科学依据,为后续湿地修复工程的实施和管理提供指导和参考,对于黄河三角洲生物多样性的保护具有重要意义。
Aims:The internationally important wetland biodiversity conservation project of the Yellow River Delta started in 2019.This study used macrobenthos community characteristics and their relationship with environmental factors to understand the health status of this ecosystem and assess the succession stage and repair effect after three years of restoration.Methods:This study investigated the macrobenthos and environmental factors in the restoration area in May(spring),August(summer)and October(autumn)in 2022,respectively.The community structure,biodiversity,and their relationships with major environmental factors were analyzed by classical taxonomy,biodiversity index,cluster analysis,multi-dimensional scaling analysis,and Spearman correlation analysis.Results:A total of 16 macrobenthic species belonging to 5 phyla,6 classes and 15 families were collected in spring,summer and autumn.Insecta species were found dominant in species composition.The number of macrobenthic species in the Yellow River Delta wetland restoration area showed an increasing trend during the survey period,with Chironomidae sp.,Radix swinhoei,and Hippeutis cantori becoming the dominant species in the area,as well as key characteristic and differential species in the community structure.The species density was significantly correlated with indicators such as specific conductance,salinity,total carbon,ammonium nitrogen,and nitrite nitrogen(P<0.01).The rapid biological comprehensive evaluation index evaluated the restoration area as the“sub-health”state.Conclusion:The restoration area is developing towards a healthier and more orderly direction but is currently in a“sub-health”state,indicating a need for continued restoration work.Ecological succession is a slow process which requires long-term ecological monitoring in our research area,including an analysis of the reconstruction process of the disturbed macrobenthic community structure in the Yellow River Delta ecological restoration area,and an exploration of the regular changes in ecological succession.
作者
倪艳梅
陈莉
董志远
孙德斌
李宝泉
王绪敏
陈琳琳
Yanmei Ni;Li Chen;Zhiyuan Dong;Debin Sun;Baoquan Li;Xumin Wang;Linlin Chen(School of Life Sciences,Yantai University,Yantai,Shandong 264003;Key Laboratory of Coastal Biology and Bioresource Utilization,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai,Shandong 264003;Key Laboratory of Coastal Zone Environmental Process and Ecological Restoration,Chinese Academy of Sciences(Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences),Yantai,Shandong 264003)
出处
《生物多样性》
CAS
CSCD
北大核心
2024年第3期74-86,共13页
Biodiversity Science
基金
中国科学院A类战略性先导科技专项“美丽中国生态文明建设科技工程”(XDA23050202)
国家自然科学基金(42176160)
山东省自然科学基金(ZR2021MD084)。
关键词
黄河三角洲
生态修复
大型底栖动物
快速生物评价
群落结构
the Yellow River Delta
ecological restoration
macrobenthos
rapid biological evaluation
community structure
作者简介
李宝泉,https://orcid.org/0000-0002-7275-1984;通讯作者:陈琳琳,https://orcid.org/0000-0001-7618-4385,E-mail:llchen@yic.ac.cn。
