Several Forest Soil Organic Carbon And Particulate Organic Carbon Spatial Distribution Characteristics In The Southern Mountains Of The Ridge About Zhang Guang Cai

Korean pine broad-leaved forest, coniferous broad-leaved mixed forest (Korean pine, larch co-exist), deciduous broad-leaved mixed forest and Mongolian oak forest are the most typical forest types in the northern forest system, through the line transect method to investigate four forest types of soil organic carbon and its active component (fine organic carbon and coarse organic carbon) in vertical section, altitude and different slope to the distribution of heterogeneity, explore the relationship between the soil organic carbon and soil nutrient (total nitrogen,total phosphorus, total potassium), the research results show that:The forest soil organic carbon and particulate organic carbon in the vertical section distribution are the same, with the vertical section deepens gradually reduced. The content of organic carbon are greatly influenced by slope direction, different forest types,-slope to.organic carbon content is lower than the sun.Forest type, slope and slope to the common effect of organic.carbon density, Single factor has no significant regularity. There have a significant correlation between Soil total nitrogen and organic carbon, but the soil total phosphorus and total potassium have no correlation with organic carbon. The regularities of distribution of Broadleaved Pinus koraiensis forest organic carbon density is:north slope>western slope, and the organic carbon density of two slope in the lower part have significant difference. Organic carbon density of coniferous broad-leaved mixed forest lowering with the altitude increasing, and the organic carbon density of south slope was significant higher than that of the western slope of the upper slope. Organic carbon density of deciduous broad-leaved forest behaves differently in different position of slope, organic carbon density of lower south slope is lower than the north slope; and the southeast slope was significantly higher than that of west slope. Mongolia Dong Lin, organic carbon density decreased with increasing altitude, east slope to the organic carbon density is significantly lower than that of the southern slope, east upper slope organic carbon density is higher than the south upper slope.