摘要
以涑水河流域所经过的六个县为例,基于DEM数据、土壤图,运用GIS提取了不同地貌下的土壤分类图,并采用Fragstats软件,计算出土壤多样性、丰富度、均匀度指数,分析土壤类型的分布特征。以土壤类型为标准对土壤多样性进行了分析研究,讨论了不同地形地貌土壤多样性状况。结果表明:土壤丰富度指数从高到低依次为丘陵、平原、洼地、低山区、中山区、高山区,土壤丰富度指数与海拔的变化呈抛物线状态,与面积变化趋势不一致;在平原和丘陵区引起成土因素的变化较其它地貌多,土壤丰富度指数最高;多样性指数从高到低依次为平原、洼地、高山区、丘陵、中山区、低山区;均匀度指数从高到低依次为高山区、洼地、平原、中山区、丘陵、低山区,土壤多样性指数与均匀度指数的变化趋势不一致。
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.
出处
《土壤通报》
CAS
CSCD
北大核心
2013年第2期266-270,共5页
Chinese Journal of Soil Science
基金
山西省自然科学基金项目"山西省涑水河流域土地覆盖与生态环境演变过程研究"(2008011061-1)资助
