太岳山植物群落土壤养分空间异质性及其对植被分布的影响  

Soil Nutrients'Spatial Heterogeneity and Effects on Vegetation Distribution in Taiyue Mountain

作　　者：赵倩 李婷婷[1] 张钦弟[1] ZHAO Qian;LI Ting-ting;ZHANG Qin-di(College of Life Sciences,Shanxi Normal University,Linfen 041000,Shanxi,China)

机构地区：[1]山西师范大学生命科学学院,山西临汾041000

出　　处：《山西师范大学学报（自然科学版）》2020年第1期79-84,共6页Journal of Shanxi Normal University(Natural Science Edition)

摘　　要：以山西省太岳山国家级自然保护区为研究对象,采用地统计学方法中的关键函数——半方差函数分析太岳山南端土壤养分的空间异质性,并采取典范对应分析(Canonical Correspondence analysis,CCA)对该区植被群落与土壤养分之间的相关关系进行研究.结果表明,该区土壤pH值、全氮(TN),全磷(TP)、有机质(SOM)、有效磷(AP)、速效钾(AK)、水解性氮(AN)等指标均表现为中等程度的变异,其中,除速效钾外,其余6个土壤因子均在该地区呈现极强的空间自相关性.CCA分析结果表明,植被群落与土壤因子之间存在显著的相关关系,土壤因子的空间异质性可能会影响群落的树种组成和群落构建,体现了生态系统中不同物种对土壤资源利用的生态位分化.Taking the Taiyue Mountain National Nature Reserve in Shanxi province as the study area, the spatial heterogeneity of soil nutrients in the southern end of Taiyue Mountain was analyzed by the semi-variance function, a key function in geostatistical analysis. The canonical correspondence analysis(CCA) was used to study the correlation between vegetation communities and soil nutrients. The results showed that soil pH, total nitrogen(TN), total phosphorus(TP), organic matter(O.M), available phosphorus(AP), available potassium(AK), and Alkaline nitrogen(AN) were all moderate. The degree of variation, in which, in addition to available potassium(AK), the other six soil factors showed strong spatial autocorrelation in the region. The results of CCA analysis showed that there was a significant correlation between vegetation community and soil factors. The spatial heterogeneity of soil factors may affect the vegetation species composition and community construction of the community. It reflects the niche differentiation of soil resources by different species in the ecosystem.

关 键 词：土壤养分 空间异质性 半方差函数 典范对应分析 

分 类 号：S154.1[农业科学—土壤学]