森林生态系统土壤氮素矿化影响因子分析及其研究趋势

Study on impact factors and its researching trend of soil nitrogen mineralization in forest ecosystem

土壤氮素矿化过程是生态系统中氮循环的重要组成部分,对研究生态系统氮素平衡和环境问题均具有重要意义。从总结现阶段土壤中有机氮矿化的研究成果入手,阐述了影响土壤氮素矿化的因子:氮素矿化受多种因子的影响,这些因子可以归结为生物因子和非生物因子,生物因子包括土壤动物、土壤微生物和植物种类,非生物因子一般可以分为环境因子和人类活动干扰。提出土壤氮素矿化的深入研究应当弄清影响因子之间相互作用的机理,并展望了以后土壤氮素矿化的研究趋势和方向。

Soil nitrogen mineralization is an important part of nitrogen cycle in the eco-system, the studying on it has important meaning to the nitrogen balance of ecological system and environment. Based on the results about mineralization o f organic nitrogen, the factors which affected soil nitrogen mineralization were discussed： Nitrogen mineralization is affected by many factors, which can be classified into biological and non-biological ones. Biological factors include soil animals, soil microorganisms and plants; the non-biological factors include environmental factors and anthropogenic disturbance. These factors have different mechanisms and influences and have been becoming research focus in this field, but no general agreements were reached and need deeper research. The essentiality of the interactions among impact factors, and outlook on future research trends and directions of soil nitrogen mineralization were put forward.