摘要
应用地统计学与GIS技术,将土壤电导率室内布点和实地监测相结合,研究广西果化岩溶区土壤电导率的空间变异特征。结果表明:各深度土壤电导率的空间分布不均,主要呈弧状、条带状和斑状分布,空间分布总体上呈现出一定的集聚趋势;各深度土壤电导率的最小空间变程为750m,可作为果化示范区土壤电导率样点布设的最佳取样间隔;示范区土壤电导率主要受植被覆盖度、地质背景和石漠化程度的影响。本研究对于指导典型岩溶区的农业生产、保障区域土壤资源的可持续利用具有重要的理论意义和参考价值。
By using Geo-statistics and GIS,combining with indoor sampling point distribution and field monitoring of soil electric conductivity,we investigated the spatial variability characteristics of soil electric conductivity in Guohua demonstration area.Soil electric conductivity showed uneven arc-shaped and patchy spatial distribution,obvious spatial agglomeration,and many gradually gradient changing strips.The minimun spatial variable scale of soil electric conductivity under different layers was 750 m,which could serve as the best interval of soil electric conductivity for sampling point distribution in Guohua.Soil electric conductivities of Guohua Demonstration Zone in each soil depth were mainly influenced by vegetation coverage,geolotical background,rocky desertification,and so on.The paper is of great theory and reference significance to guide agricultural production and maintain sustainable use of soil resources for the protection areas in typical karst area.
出处
《中国沙漠》
CSCD
北大核心
2014年第3期786-794,共9页
Journal of Desert Research
基金
国家科技支撑计划项目(2010BAE00739-02)
中国地质科学院岩溶生态系统与石漠化治理重点开放实验室开放基金专项(KERDC201201)资助
关键词
土壤
电导率
空间异质性
岩溶区
果化
soil
electric conductivity
spatial variability
karst area
Guohua
