摘要
[目的]探索空间异质性较大的岩溶区的土壤pH值空间自相关尺度及其空间结构,分析影响典型岩溶区土壤pH值空间结构的主要环境因子。[方法]应用经典统计学方法与"3S"技术。[结果]不同深度土壤pH值的空间分布均存在高度的正向全局空间自相关和明显的空间聚集区,各深度土壤pH值的空间孤立区分布较少;影响不同深度土壤pH值空间分异的环境因子排序为:植被覆盖度>石漠化程度>地质背景。[结论]土壤pH值的空间分异受到了不同植被覆盖条件下酸性物质含量的影响。石漠化程度和地质背景对土壤pH值的影响,实质上是典型岩溶环境的综合反映。
[Objective]This paper aims to demonstrate the spatial autocorrelation and the pattern of soil pH value in order to find the main influencing environmental factors.[Methods]Classical statistics and 3Stechnology were used.[Results]The spatial distribution of soil pH value in different soil depth showed a highly positive spatial autocorrelation and had obvious spatial clusters,nearly no isolated distribution was found.The factors influencing the spatial distribution of soil pH value in different soil depth ranked as：vegetation coverage,rocky desertification and geological background.[Conclusion]The spatial heterogeneity of soil pH value was affected by the content of acid materials under different vegetation covers,and the influence of rocky desertification and geological background on soil pH value is a comprehensive reflection of typical karst environment.
出处
《水土保持通报》
CSCD
2015年第5期183-188,共6页
Bulletin of Soil and Water Conservation
基金
广东省青年创新人才类项目"基于3S技术的粤北石漠化地区雨水资源化潜力研究"(2014KQNCX212)
广西自然科学基金项目(2013GXNSFBA019222)
(2015A030310275)
关键词
土壤
PH值
空间自相关
主导因子
果化示范区
soil
pH value
spatial autocorrelation
dominant factors
Guohua demonstration zone
