摘要
火一直是我国北方森林生态系统的重要干扰因子之一,在全球气候变化的背景下,其干扰作用将进一步增强。土壤氮素矿化研究对森林生态系统氮素平衡和生态环境问题均具有重要意义。本文综述了火干扰对森林土壤氮的影响。从总结现阶段土壤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素,提出土壤氮素矿化的深入研究应当弄清影响因子相互作用的机理。本研究将为火烧后对森林土壤氮库提供数据支持。
Fire has been one of the important disturbance factors of forest ecosystem in northern China, and its in- terference will be further enhanced under the background of global climate change. Soil nitrogen mineralization plays an important role in nitrogen balance and environmental ecology problems in forest ecosystems. This paper has ~＇1 reviewed the effects of fire disturbance on nitrogen in forest soil. Based on summarizing the research results of sm organic nitrogen mineralization at present, the factors affecting soil nitrogen mineralization are expounded. It is sug- gested that the mechanism of interaction of influencing factors should be clarified in the further study of soil nitrogen mineralization. This study will provide data support for forest soil nitrogen storage by fire.
出处
《林业科技情报》
2017年第2期20-25,共6页
Forestry Science and Technology Information
关键词
火干扰
森林土壤
氮矿化
影响
Fire disturbance
forest soil
nitrogen mineralization
effect
