Soil total organic carbon was negatively correlated with depth of soil, is not significant difference among soil layers in NTS.
NTS的土壤全碳含量与土层深度显著负相关，各土层间的全碳含量差异不显著。
Results showed that there were no significant differences in soil total organic carbon, soil moisture content, pH and soil microbial biomass phosphorus in each soil layer between the two plantations.
结果表明，在各个土层中，两种林分下的土壤含水量、pH值、有机碳的含量以及微生物生物量磷均无显著差异。
The contents of total nitrogen had a significant positive relationship with the soil organic carbon.
人工林土壤全氮与土壤有机碳含量之间呈显著的线性正相关。
Effect on total organic carbon of soil.
对土壤总有机碳的影响。
The study examined the total contents of soil organic carbon and the content of soil active organic carbon and stable organic carbon in farmland, grassland, scrub and forest ecosystems.
本研究分析了子午岭林区农田、草地、灌丛和森林不同生态系统土壤总有机碳、活性有机碳和稳定性有机碳含量。
The results showed that straw application increased crop yield, soil organic carbon accumulation, soil total nitrogen and phosphorus content as well as phosphorus activation.
结果表明，秸秆还田提高了作物产量，增加了土壤有机碳积累和土壤氮磷含量，且能活化土壤磷素。
The biggest influence to soil organic carbon density was organic carbon content, the next was total nitrogen, and content of soil available phosphorus was also influenced soil organic carbon density.
对毛竹土壤有机碳密度影响最大的为有机碳含量，对土壤有机碳密度的影响次之的为土壤全氮量，土壤有效磷量对其影响程度也较大。
The soil organic carbon and total nitrogen contents obviously decreased and shown an upper-accumulated pattern.
土壤有机质和全氮含量也自上而下显著的下降，表现出明显的表层聚集现象。
The soil organic carbon and total nitrogen contents obviously decreased and shown an upper-accumulated pattern.
土壤有机质和全氮含量也自上而下显著的下降，表现出明显的表层聚集现象。
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