森林细根生产力研究进展

A Review of Fine Root Productivity of Forest

森林细根生产力对于研究生态系统碳平衡具有十分重要的意义,但由于受技术方法等的限制,使人们对森林地下部分的认识相对不足。在收集国内外研究资料基础上,对细根的划分与定义、测定细根生产力的3种常用方法(根钻法、内生长袋法和微根管法)、细根生产力在时间和空间上的变化特征、影响细根生产力的生物因素(森林结构类型、植物多样性、群落演替和土壤生物等)和非生物因素(气候和土壤)进行了较系统的总结和评述,讨论了细根研究中存在的问题,对今后的研究方向提出展望,为我国开展森林细根研究提供参考。

Fine root productivity plays an important role in ecosystem carbon balance in forests. However, our understanding of the belowground of forest is relatively insufficient because of the limitation of technical method. Based on the data collected from the literatures, we reviewed the definition and classification of root, three main methods （soil coring, in growth core, and minirhizotron） used in root studies, temporal and spatial characteristics of root productivity, and major abiotic and biotic factors that affect root pro- ductivity. Finally, we discussed the problems arising in root research and proposed the research direction in future, aiming to provide Chinese researchers with references for forest root studies in China.