Global convergence in correlations among soil properties

查看全文 作　　者：Baicheng [1,2,3]Xie;Chunxia [4]Zhang;Guodong [1]Wang;Yingge [1]Xie

机构地区：[1]College of Science,Northwest A&F University,Yangling 712100,Shaanxi,China;[2]Institute of Meteorology Science of Hunan Province,Changsha 410118,China;[3]Meteorological Disaster Prevention and Mitigation Key Laboratory of Hunan Province,Changsha 410118,China;[4]Changsha Environmental Protection College,Changsha 410004,China

出　　处：《International Journal of Agricultural and Biological Engineering》索引2020年第13卷第3期,共9页

基　　金：This research was supported by the National Key Research and Development Program of China(No.2016YFD0300101);and the National Natural Science Foundation of China(31571560). 摘　　要：The correlations among major soil properties at a global scale are essential for explaining the global convergence of ecological processes in terrestrial ecosystems but have never been assessed.In this study,a global soil database was analyzed to determine whether correlations among soil properties were consistent and how such correlations varied among continents and land use types.Across the entire dataset,the electrical conductivity of soils increased significantly with increasing pH;additionally,the total nitrogen and cation exchange capacity increased significantly with increasing organic carbon content,while the organic carbon content and cation exchange capacity decreased significantly with increasing sand content in soil.The correlations between paired soil properties were consistent among continents and land use types.The slopes of the relationships,however,varied significantly by continent and land use type.The results indicated a global convergence of correlations among soil properties and variation in the slopes of specific relationships between paired soil properties among continents and land use types.Such consistent global correlations and different slopes of specific correlations can have important implications in explaining the global patterns of biogeochemical processes and can provide some basis for linking soil resources with ecological processes on a global scale. 关键词：CONTINENT land use organic carbon electricity pH CEC

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Global convergence in correlations among soil properties

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