A Study on Soil Diversity in Sushui River Based on the DEM
Taking six towns along Sushui River as examples,this research is on the basis of DEM data and soil diagram and makes use of the software GIS.It has drawn the soil classification charts of different geomorphologies.Under the help of the Fragstats software,it has calculated the index numbers of soil diversity,richness and evenness,and analyzed the characteristics of soil types.The soil diversity according to the soil standard has been analyzed,and the soil diversity on different geomorphologies has been discussed.The results indicate that the richness indices on different geomorphologies order from high to low as the hill,plain,lowland,low mountain,middle mountain and high mountain.The soil richness indices and the altitude vary as para-curve,but are different from the changes of area.The variations of pedogenic factors in the plain and hill are greater than others,and their richness indices are highest.The diversity indices order from high to low values as plain,lowland,high mountain,hill,middle mountain and low mountain.The evenness indices decrease as high mountain,lowland,plain,middle mountain,hill,and low mountain.The indices of diversity and uniformity are not in the identical trend.
NETL
NSTL
万方数据
维普
