摘要
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。
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,thispaper summarized the N deposition effect on the fine root dynamic and morphological characteristics,andecosystem C cycle.With detailed analysis of the current situation of global N deposition,the authors found anincreasing trend of N deposition year by year.The responses of fine root dynamic(fine root turnover andrespiration) and morphological characteristics(fine root length,diameter,biomass,tissue chemistry) to the Ndeposition were analyzed.These studies provided certain evidence about N deposition effect on fine rootdynamic and morphological characteristics,and had significance to future comprehensive research on fine root.
出处
《中国农学通报》
2016年第15期79-85,共7页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金项目“大兴安岭北方森林细根动态和形态特征对氮沉降的响应”(41575137),“大兴安岭北方森林生态系统对N沉降增加的响应”(31370494),“小兴安岭阔叶红松林生态系统对N沉降增加的响应”(31170421),“气候变化背景下小兴安岭阔叶红松林土壤碳汇变化机理”(31070406)
科技部基础性工作专项A类项目“东北森林国家级保护区植物群落和土壤生物调查”(2014FY110600)
黑龙江省自然科学基金重点项目“黑龙江省寒温带针叶林生态系统碳循环对模拟N沉降的响应”(ZD201406)
关键词
氮沉降
细根动态特征
细根形态特征
影响
研究进展
nitrogen deposition
fine root dynamic characteristics
fine root morphological characteristics
influence
research progress