摘要
应用GIS技术,综合统计学和地统计学方法,探讨了浑河太子河流域表层土壤养分的空间分布,同时分析了地形因子、土地利用及其交互作用对土壤养分空间变异的影响。结果表明:海拔、坡度与土壤有机质、全氮、全磷呈极显著正相关,与全钾呈极显著负相关;坡向的影响不显著。林地和草地的有机质、全磷平均含量相对较高;水田和旱地的全钾平均含量较高。地形因子与土地利用方式的交互作用显著影响土壤养分含量。有机质、全氮和全磷含量高的区域集中在海拔较高、坡度较大的林地和草地。地形条件和土地利用方式能够解释研究区土壤养分的空间变异。
Based on the GIS,statistics and geostatistics method,this study simulated the spatial distribution of surface soil nutrients,and explored the effects of topographic factors,land use types and their interaction in Hun-Tai river basin. The results indicated that elevation and slope were positively correlated with soil organic matter（ SOM）,total nitrogen（ TN） and total phosphorus（ TP） concentrations,while negatively correlated with total potassium（ TK） concentration. Aspect had no significant effects on these soil nutrient properties. Forest and grassland had higher SOM and TP concentrations. Paddy field and cropland had higher TK concentration. Land use and topographic factors interactively affected soil nutrient properties. Higher SOM,TN and TP concentrations were distributed in the forest and grassland with higher elevation and greater slope. Topographic conditions and land use types can explain the spatial variability of soil nutrients in the study area.
出处
《生态学杂志》
CAS
CSCD
北大核心
2016年第3期621-629,共9页
Chinese Journal of Ecology
基金
国家自然科学基金项目(41171155)资助
关键词
地形
土地利用
土壤养分
topography
land use
soil nutrient
