碳素循环

自然界中纤维素的降解是碳素循环的重要组成部分，这种由微生物主导的纤维素水解，主要是纤维素酶作用的结果。

Enzymatic hydrolysis of cellulose by microorganisms is a key step in the global carbon cycle .

产甲烷菌是重要的环境微生物，在自然界的碳素循环中起着重要的作用。

Methanogens is an important environment microorganism , which plays an important role in the global carbon cycle .

森林对地气系统碳素循环的影响

Influence of Forest on Circulation of Carbon in the System of Earth and Atomsphere

木素降解是地球上碳素循环的限速过程，是植物纤维素材料有效利用的关键步骤。

The degradation of lignin is the critical process and step of utilizing plant cellulose materials effectively .

碳素循环的特点基本上能够反映生态系统物质循环的总体特征。

Characteristics of overall material cycle in ecosystem may be reflected by the characteristics of the carbon cycle .

木质素是第二天然聚合物，木质素的降解是碳素循环中的关键一步。

Lignin is the second natural polymer . The biodegradation of lignin is the key step of carbon recycling .

概述了草地生态系统碳素循环的一般特征，介绍了一个草地碳循环的分室模型；

Some major characteristics of the carbon cycle in grassland ecosystems were summarized , and a carbon cycle compartment model was introduced as well ;

其中微生物扮演了重要的角色，它参与了土壤有机碳的固定和再生，土壤是作为碳库还是碳源相当程度上取决于土壤中碳素循环微生物的群落结构特征。

It participate in the soil organic carbon sequestration and regeneration . Soil is carbon pool or carbon source depends on the carbon cycle in soil microbial community structure .

土壤有机质在养分循环、土壤理化性质等方面具有重要作用，是陆地生态系统重要的碳库，对全球碳素循环的平衡起着重要作用。

Soil organic matter ( SOM ) is an important component of soil and an important carbon pool of terrestrial ecosystems , which plays an important role in soil nutrient cycling and in the balance of global carbon cycle .

占植株干物质总重量2/3的纤维素，不但是地球表面天然起源的重要有机物质之一，而且它的降解还是自然界碳素循环的中心环节。

Cellulose account for 2 / 3 of total dry matter weight of plant , it is not only one of very important natural original organic matter on the earth surface , but also its degradation is the key link of carbon recycle in nature .

纤维素是地球上数量最大的可再生性能源物质，微生物对它的降解、转化是自然界碳素循环的重要环节，对这个过程的有效利用可望在能源，饲料和食物的持续供应上发挥巨大的作用。

The cellulose is the biggest renewable energy source material on the earth , its degradation and conversion by microorganism are very important for carbon cycle in nature , moreover , the efficient utilization of this process may develop the enormous function on supplying energy 、 feedstuff and food .