两种地质背景条件下群落物种组成及多样性与土壤因子的相关性研究——以桂林毛村为例  

Correlation between the composition and diversity of community species and soil factors under two geological conditions——A case study of Mao village in Guilin

作　　者：张薰元 周运超 黄梅 白云星 张春来[2,3,4] ZHANG Xunyuan;ZHOU Yunchao;HUANG Mei;BAI Yunxing;ZHANG Chunlai(Research Center for Forest Resources and Environment of Guizhou Province,Guizhou University/Key Laboratory of Plateau Mountain Tree Breeding of Guizhou Province/College of Forestry,Guiyang,Guizhou 550025,China;Institute of Karst Geology,CAGS,Guilin,Guangxi 541004,China;Key Laboratory of Karst Dynamics,MNR&GZAR,Guilin,Guangxi 541004,China;International Research Center on Karst under the Auspices of UNESCO,Guilin,Guangxi 541004,China)

机构地区：[1]贵州大学贵州省森林资源与环境研究中心/贵州省高原山地林木培育重点实验室/林学院,贵州贵阳550025 [2]中国地质科学院岩溶地质研究所,广西桂林541004 [3]自然资源部、广西岩溶动力学重点实验室,广西桂林541004 [4]联合国科教文组织国际岩溶研究中心,广西桂林541004

出　　处：《中国岩溶》2022年第6期940-951,共12页Carsologica Sinica

基　　金：贵州省一流学科建设项目(GNYL[2017]007);贵州省“百层次”培养计划(QKHRC-2015-4022);贵州省人才团队项目(QKHPTRC20195614);中国地质科学院岩溶地质研究所地质调查委托项目(YR—JJHT-2017-206)。

摘　　要：为对比岩溶和非岩溶条件下物种组成及多样性的差异,明晰不同地质背景造就的不同土壤因子对物种多样性的影响,在兼有岩溶区与非岩溶区的桂林毛村采用野外样地调查法对研究区进行物种组成及多样性的对比研究。结果表明:(1)研究区内共记录了123种植物,其中岩溶区占35科46属87种,非岩溶区占48科61属95种,非岩溶区植物科属种数量明显大于岩溶区;(2)岩溶区物种多样性为:草本样方>灌木样方>乔木样方;在非岩溶区为:灌木样方>乔木样方>草本样方;(3)不同地质背景造就了不同的土壤因子,其中土壤全氮含量对物种多样性影响最为显著。综上,岩溶区物种组成明显低于非岩溶区,物种多样性也不及非岩溶区,土壤因子与物种多样性之间存在相关性,土壤全氮对物种多样性影响最为显著,土层深度减弱了土壤因子与物种多样性之间的相关性。对比岩溶区与非岩溶区土壤因子与物种之间的关系差异,为区域生态系统恢复重建提供了理论基础。In order to compare the differences of species composition and diversity between karst and non-karst areas,and to explore the influence of different soil factors under these two geological conditions on species diversity,we conducted a field investigation in Maocun of Guilin that is composed of both karst and non-karst areas.Results show that a total of 123 species is recorded in the study area,including 87 species,46 genera and 35 families in karst area and 95 species,61 genera and 48 families in the non-karst area.The number of species composition in non-karst area is significantly higher than that in the karst area.In addition,the quadrat of species diversity in karst area is listed as:herb quadrat>shrub quadrat>tree quadrat.In the non-karst area,it is listed as,shrub quadrat>tree quadrat>herb quadrat.Finally,different types of geological background contribute to different soil factors,among which the total nitrogen content of soil has the most significant effect on species diversity.In conclusion,the species composition and diversity in the karst area is significantly lower than that in the non-karst area,and there is a correlation between soil factors and species diversity.Total nitrogen of soil has the most significant effect on species diversity,and the soil depth weakens the correlation between soil factors and species diversity.Comparing the relationship between soil factors and species in karst and non-karst areas provides a theoretical basis for the restoration and reconstruction of regional ecosystem.

关 键 词：岩溶区 物种组成 多样性 冗余分析 

分 类 号：Q948[生物学—植物学]