碳水化合物在土壤中的分布特征及其环境意义

碳水化合物是土壤中最活跃的有机质成分之一 ,其在土壤中的行为要受到诸如土壤密度和颗粒粒度、季节和微生物等因素的影响。由于碳水化合物与粘土、各种离子之间存在着广泛的相互作用 ,它能稳定土壤结构 ,在一定程度上减少土壤及有用物质的流失 ,保持土壤环境的稳定。碳水化合物在土壤中的行为规律较为明显 ,并且来源差异能反映在单糖组分上 ,正因为如此 ,碳水化合物可以作为指示剂和参照物来反映有机质在土壤的降解与迁移

THE DISTRIBUTION AND ENVIRONMENTAL EFFECT OF CARBOHYDRATE IN SOIL

Carbohydrate is the most important and decomposable soil organic matter. Many studies have shown that the changes of carbohydrate can serve as a sensitive indicator to the overturn and decomposition of organic matter. Moreover, its existence can enhance the stability of soil aggregates. Consequently, much more attention should be paid to the studies of it. The objectives of this paper are to give a comprehensive introduction to carbohydrate and to set forth the distribution and environmental effect of different sugars in soil.