The very cold environment results in the higher value of soil organic carbon density in the study area.
区域草地土壤有机碳密度及储量呈明显的水平和垂直分异规律。
Some data indicate that the soil organic carbon density of paddy soil is higher than that of dry cropland soil in China, and has an increasing tendency over the last 20 years.
目前有资料表明，我国水稻土具有比旱地土壤较高的表土有机碳密度，且近20年来存在着升高的趋势。
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。
Then, the bulk density, porosity, the type of pore, particle constitute and organic carbon in the soil affected the soil moisture diffusivity.
土壤颗粒组成、容重、有机质、孔隙率影响土壤持水性能。
All research results showed that the cultivated land fertility was unstable; density soil organic carbon was lower.
国内研究表明，目前耕地的地力不稳，土壤有机碳密度较低，农田土壤固碳的潜力较大。
Set up mathematics models of soil organic carbon, taking soil carbon content as objective character, and soil water content, soil density, plant biomass and soil depth as effect factors.
可以认为土壤含水量和植物生物量是影响土壤有机碳含量的重要因素。
Set up mathematics models of soil organic carbon, taking soil carbon content as objective character, and soil water content, soil density, plant biomass and soil depth as effect factors.
可以认为土壤含水量和植物生物量是影响土壤有机碳含量的重要因素。
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