天津滨海湿地土壤有机碳储量及其影响因素分析

对天津滨海湿地的土壤有机碳(SOC)储量进行了研究. 结果表明:滨海湿地土壤表层(0～30 cm)w(SOC)为(8.55±3.98)g/kg，平均土壤有机碳密度为(4.70±1.91)kg/m2，低于全国平均水平. 从土地覆盖类型看，除林地外，滨海湿地土壤中w(SOC)也处于偏低水平. 滨海湿地的土壤中w(SOC)与土壤环境因子有显著相关关系，由此建立回归方程，认为土壤中w(黏粒)和pH是影响土壤中w(SOC)的最主要因素，二者可以解释71.8%的土壤有机碳分布情况. 提出对滨海湿地的改良建议，认为适当地进行人为管理和调控，对土壤环境的改善及土壤有机碳储量的增加有积极作用. 

Analysis of Soil Organic Carbon Storage and Influencing Factors in the Soil of Binhai Wetland in Tianjin

The soil organic carbon storage in Tianjin Binhai wetland was researched.The results showed that the soil organic carbon storage in the surface soil(0-30 cm) of Tianjin Binhai wetland was(8.55±3.98) g/kg,and the average soil carbon density was(4.70±1.91) kg/m2.This appeared to be lower than the average level in China.The soil organic carbon values were lower on average than all other vegetation covers of China expect forest.The soil organic carbon in Tianjin Binhai wetland had a significant correlation with the environmental factors of the soil,and regression analysis showed that the soil clay percentage composition and pH were the most important factors impacting the soil organic carbon distribution.These two factors could explain 71.8% of the soil organic carbon distribution.Appropriate human-made land management and regulation is suggested as a method for improving the soil environment and organic carbon storage.