黔南喀斯特地区植烟土壤有效态中微量元素空间变异及影响因子——以黔南山区为例  

Spatial Variability and Impact Factors of Available Medium and Trace Elements in Karst Tobacco Soil——A Case Study of Mountainous Area in Qiannan Municipality,Southwest China

作　　者：武德传[1] 施寒丰 王维洁[1] 江玉平[2] 宋泽民 

机构地区：[1]安徽农业大学农学院,合肥230036 [2]中国科学技术大学地球与空间科学学院,合肥230026 [3]贵州省黔南州烟草公司,贵州都匀558000

出　　处：《山地学报》2017年第6期826-834,共9页Mountain Research

基　　金：安徽省高等教育省级振兴计划项目-作物学科高水平教师团队建设(zwxkgsp-2015);安徽农业大学引进人才科研启动基金(2010031);贵州省黔南州烟草公司资助项目(201130)~~

摘　　要：为揭示喀斯特山地植烟土壤中微量元素空间变异特征及影响因素,利用地统计学对黔南喀斯特山地植烟土壤有效态钙、镁、铜、锌等元素进行空间变异和影响因子分析。结果表明,黔南植烟土壤交换性钙、有效铜和有效锌属中等强度变异,交换性镁属强变异。交换性钙、交换性镁、有效铜和有效锌的半方差函数均为指数模型。交换性镁、有效铜和有效锌具有中等的空间相关性,交换性钙空间相关性较弱。黔南州植烟土壤交换性钙、交换性镁、有效铜和有效锌总体含量较为丰富,土壤交换性钙、交换性镁、有效铜和有效锌缺乏的面积分别只占统计面积的1.22%、0.46%、0.21%和0.25%。土壤类型和土壤p H是影响黔南植烟土壤有效态中微量元素含量的重要环境因子。Spatial variability and impact factors of available medium and trace elements in Qiannan Karst tobacco soil were analyzed using geostatistics. Results indicated that the variability coefficients of exchangeable calcium（ ECa）,available copper（ ACu） and available zinc（ AZn） were in moderate intensity,and exchangeable magnesium（ EMg） was in strong intensity. Semivariogram models of ECa,EMg,ACu and Azn were described as exponential models. Spatial autocorrelation of EMg,ACu and AZn were in moderate intensity,and ECa was in weak intensity. In general,contents of ECa,EMg,ACu and AZn in tobacco soil were rich,and the areas with deficiency of ECa,EMg,ACu and AZn only accounted for 1. 22%,0. 46%,0. 21% and 0. 25% of total study area,respectively. Soil type and p H were key environmental factors that influenced tobacco soil available secondary and trace elements in Qiannan prefecture.

关 键 词：喀斯特山地 植烟土壤 中微量元素 空间变异 影响因子 

分 类 号：S158.9[农业科学—土壤学]