摘要
随着城市规模不断扩大和城市植被管理实践的日益推进,我国城市化进程正在飞速发展。城市化进程的加快及其导致的植被改变强烈影响土壤生物多样性。作为城市绿地生态系统中的优势类群和环境变化的指示生物,土壤跳虫的群落结构和功能性状变化反映了环境变化对土壤生态功能的影响。以跳虫为研究对象,按照城市化梯度,分别在公园绿地、道路两侧绿化带、居民区绿地和工业园绿地四种绿地类型中采集样品,并选择森林样地作为对照,探讨了城市化和绿地类型对跳虫群落及其功能性状的影响。结果表明:(1)不同绿地类型中跳虫群落组成和结构存在显著差异,其中森林中等节跳科的丰度最高,而其它绿地中为长角跳科;城市化和绿地类型显著影响了跳虫的物种多样性,其中城市公园中跳虫的Shannon指数比城郊公园显著降低,而城市居民区中的Shannon指数显著高于城郊居民区;在城市生境中,居民区和绿化带中跳虫的Pielou均匀度指数显著大于公园,而在城郊中,公园中的物种丰富度和Shannon指数均显著大于森林。(2)相比城市化,绿地类型对跳虫功能性状的影响更强烈,比如公园、绿化带和居民区等人为扰动较强的绿地筛选出了弹器发达、相对腿长较长和体色较深的表土生物种,而在森林中则以弹器退化、相对腿长较短和体色较浅的真土生物种为主。(3)此外,跳虫科阶元的丰度与土壤pH具有较强的相关性。本研究结果为城市土壤动物多样性的环境驱动机制及城市生物资源保护提供了一定的数据支撑和理论依据。
In recent years,the impact of human activities on ecosystems has become increasingly evident worldwide.One of the most notable factors is urbanization,which significantly disrupts natural systems.The rapid expansion of urban areas and vegetation management practices in cities has driven the urbanization process.This has accompanied by changes in vegetation,has had a profound influence on urban soil biodiversity.Nevertheless,collembolans are the dominant groups and serve as excellent indicators of environmental changes in urban greenspaces.The changes in community structure and functional traits of collembolans imply the effects of environmental changes on soil ecological functions.In this study,we collected soil samples from four types of human interventional greenspaces,named park greenspace,median green strips on both sides of the road,residential greenspace,and industrial greenspace,in urban-suburban areas,and eight forest plots were selected as the biological pool for local collembolans.The study aimed to investigate the effects of urbanization and greenspace type on community composition and functional traits of collembolans.The results of the study showed that:(1)there were significant differences in the community composition and structure of collembolans among different greenspace types.In the forest,the Isotomidae exhibited the highest abundance,whereas the dominant taxa in the other greenspace types were the Entomobryidae.The study demonstrated that both urbanization and greenspace types had a significant impact on the taxonomic diversity of collembolans.Specifically,the Shannon index of collembolans in urban parks was significantly lower compared to suburban parks.On the other hand,the Shannon index in urban residential areas was significantly higher than that in suburban residential areas.In urban habitats,the Pielou evenness index of collembolans in residential areas and median green strips was significantly higher than that in parks.Regarding suburban areas,the study found that both richness and the
作者
冯钧
乔志宏
鄢麒宝
姚海凤
王滨
孙新
FENG Jun;QIAO Zhihong;YAN Qibao;YAO Haifeng;WANG Bin;SUN Xin(School of Life Sciences,Hebei University,Baoding 071000,China;Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China;Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《生态学报》
CAS
CSCD
北大核心
2024年第6期2582-2596,共15页
Acta Ecologica Sinica
基金
国家自然科学基金项目(42021005)
国家科技基础资源调查计划项目(2018FY100303)。
关键词
城市化
绿地类型
跳虫
群落多样性
功能性状
人为干扰
urbanization
greenspace types
Collembola
community diversity
functional traits
human interference
