地膜覆盖使土壤有机质分解增快。
Soil organic matter decomposition was increased under mulch.
土壤中原有的土壤有机质分解速度与半衰期成反比。
The decomposition rate of original soil organic matter is inversely proportional to its half-life.
建立了符合土壤有机质分解机制的重量损失和碳损失的数学模型。
Mathematical models based on the mineralization mechanism were built for the mass loss and carbon loss.
测定秸秆和土壤有机质分解过程中CO_2释放量、土壤微生物量和土壤无机氮含量变化，探讨土壤有机质和秸秆分解的规律。
The mechanism of Soil organic matter and wheat straw decomposition were discussed through the accumulated CO2, microbial biomass and inorganic nitrogen content.
土壤有机质中的碳是地球碳库的重要组成部分，它参与全球碳循环。土壤有机质分解而产生的CO2和CH4是重要的温室气体。
The carbon in soil organic matter (SOM) is a significant component of the earth's carbon reservoirs, and participates in the global carbon circulation.
凋落物分解是森林生态系统养分循环中的重要过程，对土壤有机质的形成和养分释放有重要意义。
Forest litters decomposition was an important process of nutrient cycling in forest ecosystems, and played a central role in soil organic matter formation and nutrients release.
土壤有机质是微生物分解植物和动物残体的产物。
Soil organic matter is the product of microbial decomposition of plant and animal residues.
微生物不仅使土壤有机质的分解和合成处于相对平衡状态，而且可矿化有机物提高土壤肥力。
Soil microbes can not only sustain the balance of decomposition and composition of soil organic matters, but also improve soil fertility by mineralizing the organic matters.
微生物不仅使土壤有机质的分解和合成处于相对平衡状态，而且可矿化有机物提高土壤肥力。
Soil microbes can not only sustain the balance of decomposition and composition of soil organic matters, but also improve soil fertility by mineralizing the organic matters.
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