安徽农业科学2017，Vol.45Issue(7)：100-103,149,5.
纳帕海不同土地利用方式下土壤有机碳分布特征
The Distribution Characteristics of Soil Organic Carbon under Different Land Uses Patterns in Napahai
摘要
Abstract
[Objective] To study the profile distribution characteristics of soil organic carbon (SOC) under different land use patterns and its correlation with soil water content and bulk density in Napahai plateau wetland in order to provide scientific basis for the rational and efficient use of land resource in the region.[Method]The pig arched meadow, farmland, shrub and forest were selected in this area and the study was carried out.[Result] In 0-50 cm soil depth, soil organic carbon content from high to low was farmland (26.43 g/kg), pig arched meadow (20.95 g/kg), shrub (20.16 g/kg), forest (17.25 g/kg) in Napahai plateau wetland area.SOC content was the highest at 0-10 cm soil layer and which was the main SOC reservoir accounted for 37.42%, 28.07%, 49.81% and 30.10% of 0-50 cm soil depth, and the SOC content decreased with soil depth enhance.The SOC density and SOC reserves showed a consistent trend.According to the regression equation, the soil water content was positively correlated with SOC(R2=0.50,P<0.05)and the soil bulk density was negatively correlated with SOC (R2=0.60,P<0.01), and they all reached a significant level in the soil surface layer (P<0.05).[Conclusion] Different land use patterns have different storage capacity for SOC in vertical direction, and the degradation of wetland will lead to the loss of SOC in varying degrees.The content of SOC in the surface is largely affected by soil water content and soil bulk density.关键词
高原湿地/土壤有机碳/土地利用类型/纳帕海Key words
Plateau wetland/Soil organic carbon/Land use types/Napahai分类
农业科技引用本文复制引用
李璇,马旭晨..纳帕海不同土地利用方式下土壤有机碳分布特征[J].安徽农业科学,2017,45(7):100-103,149,5.基金项目
国家自然科学基金项目(31360122) （31360122）
云南省高校优势特色重点学科(生态学)建设项目. （生态学）
