中文摘要：

粗木质物残体（CWD）在森林生态系统能量流动、物质循环以及维护森林生态系统的完整性和稳定性方面发挥着重要作用，科学有效地对其贮量进行定量化研究，对进一步了解CWD在生物地球化学循环过程中和全球碳循环与碳平衡中的地位与作用具有重要意义。文中论述了CWD的贮量、CWD的分解、CWD在碳贮量与碳循环中的重要作用以及影响CWD贮量和分解的原因，系统阐明了CWD在促进森林生产力、维持生物多样性以及促成森林更新等方面的功能，展望了CWD贮量定量化研究以及结构与功能研究的发展方向。

英文摘要：

Coarse woody debris （CWD） play a major role in energy flowing in forest ecosystems, matter recycling and maintaining the integrity and stability of forest ecosystem. The scientific and effective quantitative study of CWD storage is greatly significant for understanding CWD ＂s status and roles in the process of geo - biological - chemical circulation and in the global carbon cycle and balance. The paper described the storage and decomposition of CWD, the important role of CWD in carbon storage and cycle, and the factors influencing the storage and decomposition of CWD. The functions of CWD in terms of promoting forest productivity, maintaining biodiversity and promoting forest regeneration were systematically discussed, and the development directions of the quantitative study and the structural and functional study of CWD storage were prospected.