水土保持学报2011，Vol.25Issue(3)：160-163,168,5.
黄土丘陵区小流域尺度上土壤有机碳空间异质性
Spatial Variability of Soil Organic Carbon in Catchment Scale of Loess Hilly Area
摘要
Abstract
According to the analysis of 60 sampling points which located in Shanghuang small watershed in loess hilly area. Using geostatistics method analyzed spatial variability of soil organic carbon(SOC) contents.The results indicated thats the SOC contents decreased with the increase of soil depth and in different land use patterns, there existing significant differences. The SOC contents of surface 0-10 cm with 9. 544 g/kg was obviously higher than that of 10-30 cm and 30-60 cm which were 7.10 g/kg and 4.63 g/kg respectively. Kriging interpolation results also showed the same trend. Form the analysis of SOC spatial distribution of SOC analysis, three soil depths all showed that natural grassland and caragana pure forests' SOC contents were more higher than that of Sichuan terraces and flood lands'. The spatial distribution characteristics of SOC contents were associated with the vertical distribution pattern of animals and plants in soil profile, the human social activities and regional climate conditions.关键词
土壤有机碳/空间变异/变异系数/小流域/地统计学Key words
soil organic carbon (SOC)/ spatial variability/ coefficient of variation (CV)/ small watershed/ geostatistics分类
农业科技引用本文复制引用
薛志婧,侯晓瑞,程曼,安韶山..黄土丘陵区小流域尺度上土壤有机碳空间异质性[J].水土保持学报,2011,25(3):160-163,168,5.基金项目
国家自然科学基金(40971171) （40971171）
西北农林科技大学"青年学术骨干支持计划" （）
