文献类型：期刊文献

中文题名：呼伦贝尔寸草苔草原群落特征及物种多样性与土壤理化性质的关系

英文题名：Relationship Between Community Characteristics and Species Diversity of Carex Duriuscula and Soil Physiochemical Properties in Hulunbuir Steppe

作者：崔盛超[1] 图雅[1] 萨拉[2] 朱媛君[3] 杨晓晖[3] 张克斌[1]

第一作者：崔盛超

机构：[1]北京林业大学水土保持学院,北京100083;[2]呼伦贝尔市林业和草原事业发展中心,内蒙古呼伦贝尔021008;[3]中国林业科学研究院荒漠化研究所/生态保护与修复研究所,北京100091

年份：2023

卷号：43

期号：5

起止页码：27-34

中文期刊名：水土保持通报

外文期刊名：Bulletin of Soil and Water Conservation

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2023_2024】；

基金：国家自然科学基金面上项目“基于联合物种分布模型的呼伦贝尔草地退化评价及未来潜在风险预测”(41971061);国家自然科学基金国际(地区)合作与交流项目“中国—阿根廷温带草原退化合作研究:现状评价与恢复策略”(32061123005)。

语种：中文

中文关键词：呼伦贝尔;寸草苔草原;群落特征;物种多样性;土壤理化性质

外文关键词：Hulunbuir;Carex duriuscula steppe;community characteristics;species diversity;soil physiochemical properties

分类号：Q948.113

摘要：[目的]研究内蒙古呼伦贝尔寸草苔草原群落特征及物种多样性与土壤理化性质的关系,为草原生态系统的保护和恢复提供科学参考。[方法]对呼伦贝尔寸草苔草原95个典型样地进行群落调查,研究呼伦贝尔寸草苔草原4种群落类型间群落特征及物种多样性与土壤理化性质之间的关系。[结果](1)群落特征中,地上生物量、物种丰富度和Shannon-Wiener指数在4种群落类型间以寸草苔—一二年生草类群落最高;土壤理化性质中,全氮和全磷均以寸草苔—根茎型草类群落最高。(2)寸草苔—丛生草类群落和寸草苔—杂类草群落中,土壤有机碳、全氮、全磷与地上生物量、地下生物量呈显著正相关关系。(3)寸草苔—根茎型草类群落和寸草苔—一二年生草类群落中,土壤有机碳、全氮、全磷与Shannon-Wiener指数、Simpson指数、Pielou指数呈显著负相关关系。[结论]呼伦贝尔寸草苔草原群落特征在4种群落类型间存在不同程度差异,土壤理化性质中土壤有机碳、全氮和全磷是影响群落特征和物种多样性差异的主要因子。
[Objective]The relationships between community characteristics,species diversity,and soil physical and chemical properties of Carex duriuscula in Hulunbeier steppe were analyzed in order to provide a scientific reference for the protection and restoration of grassland ecosystems.[Methods]Ninety-five sample plots typifying the Hulunbeier C.duriuscula steppe were studied.The relationships between community characteristics of four community types and species diversity and soil physical and chemical properties were studied.[Results]①With regard to the community characteristics,aboveground biomass,species richness,and Shannon-Wiener index were significantly different among the four community types.The community of C.duriuscula-annual and biennial herbs was the highest.With regard to the soil physical and chemical properties,total nitrogen and total phosphorus were the highest in the community of C.duriuscula-rhizome herbs.②Soil organic carbon,total nitrogen,and total phosphorus were significantly positively correlated with above-ground biomass and below-ground biomass in the C.duriuscula-clump herbs community and the C.duriuscula-forbs community.③Soil organic carbon,total nitrogen,and total phosphorus were significantly negatively correlated with the Shannon-Wiener index,Simpson index,and Pielou index in the C.duriuscula-rhizome herbs community and the C.duriuscula-annual and biennial herbs community.[Conclusion]There were differences in community characteristics among the four community types in the C.duriuscula steppe.Soil organic carbon,total nitrogen,and total phosphorus were the main factors affecting the differences in community characteristics and species diversity.