内蒙古典型草原土壤有机碳与土壤理化性质的关系

该文以内蒙古典型草原为研究对象,通过野外调查取样与实验室测定等方法,分析了表层土壤有机碳与土壤理化性质的相关性。结果表明:土壤有机碳与土壤全氮和土壤含水量呈显著线性正相关(P0.01),而与土壤容重呈显著线性负相关关系(P0.01);土壤全氮与土壤容重呈显著线性负相关关系(P0.01),与土壤含水量呈显著线性正相关关系(P0.01)。说明草地生态系统内部的各养分是相互联系、相互作用的有机整体。

Soil Organic Contents in Relation to Soil Physic-chemical Properties in Typical Steppe of Inner Mongolia

Typical steppe of Inner Mongolia was chosen as the research site for grassland condition monitoring.The integrating method of outdoor sampling and indoor determination was used to analyze the correlation between soil or?ganic carbon(C)and soil physic-chemical properties.The results showed that the soil organic C was significantly pos?itively correlated to the soil total nitrogen and soil moisture content(P<0.01),while soil density was significantly negatively correlation with soil organic C(P<0.01).Soil total nitrogen was significantly positively correlated to the soil moisture content(P<0.01),and was significantly negatively correlation with soil density(P<0.01).The results also indicated that the nutrients in grassland ecosystem were organic whole of interrelationship and interaction.