Study on Soil Color Spatial Autocorrelation and Spatial Distribution in Typical Karst Area
According to the customed methods of soil color,by using Geo-statistics and GIS,combining with indoor sampling point distribution and field monitoring of soil color,the spatial autocorrelation and spatial distribution of soil color of typical karst area at Guohua demonstration zone on Baise town in Guangxi were studied.The results showed that the spatial distribution of soil color showed obviously positive global spatial autocorrelation.The spatial autocorrelation distances of soil color was 2 200 m.The soil color samples showed the spatial distribution pattern of parallel lines,of that showing two types of spatial structures:the one was spatial agglomeration between 1 m to 2 200 m in spatial distances,the other was spatial isolation between 2 200 m to 2 800 m in spatial distances.The soil in brown was widely distributed,of that in yellowish-brownl,as well as in dark-brown only scattered as small lumps.
soil colorspatial autocorrelationspatial distributiontypical karst area