Effects of composite soil with feldspathic sandstone and sand on soil aggregates and organic carbon

[摘要] The case was to study the effects of soils with different proportions of feldspathic sandstone and sand on soil stability and organic carbon at 0-30 cm soil depth with four different ratios(C1, C2, C3 and C4), They were used to prepare the composite soil in Fu Ping, Shaanxi Province of China, then the soil aggregates distribution, WASR, MWD, GMD, D valueand and organic carbon content were measured and analysed.The results showed : the soil stability of C1, C2 and C3 was better than C4, i.e., the composition could improve the soil stability. With the increasing of the planting years, the contents of soil aggregates with the size >0.25 mm and MWD, GMD and SOC increased for each treatment at 0- 30 cm soil depth, which was contrary to D values. WASR of C2 was significantly higher than others (p

[发布机构] Shaanxi Province Land Engineering Construction Group, Xi'an; 710075, China^1;College of Forestry, Northwest AandF University, Yangling; 712100, China^2;Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Land and Resources of China, Xi'an; 710075, China^3

[效力级别] 生物科学

[关键词] Composite soils;Different proportions;Logarithmic relationship;Organic carbon contents;Soil aggregate;Soil depth;Soil stability;Soil structure