氮沉降对细根动态和形态特征的影响研究进展

旨在总结前人研究经验以及过去研究的不足,指出未来N沉降对于细根影响研究的发展方向。基于前人研究的成果,总结了N沉降是如何影响细根动态和形态特征,进而又如何影响生态系统C循环。详细分析了全球N沉降现状,表明N沉降呈逐年加重的趋势;分析了细根动态(细根周转和呼吸)和形态特征(根长、直径、生物量、化学组分)对N沉降的响应。既有研究提供了很多N沉降影响细根动态和形态特征的证据,这些证据对于未来开展细根综合研究具有重要借鉴意义。

Research Progress of Nitrogen Deposition Effect on Fine Root Dynamic and Morphological Characteristics

The purpose of this review is to summarize previous researches and limitation of the past research, and point out the research direction of N deposition effect on fine root. Based on previous research results, this paper summarized the N deposition effect on the fine root dynamic and morphological characteristics, and ecosystem C cycle. With detailed analysis of the current situation of global N deposition, the authors found an increasing trend of N deposition year by year. The responses of fine root dynamic (fine root turnover and respiration) and morphological characteristics (fine root length, diameter, biomass, tissue chemistry) to the N deposition were analyzed. These studies provided certain evidence about N deposition effect on fine root dynamic and morphological characteristics, and had significance to future comprehensive research on fine root.