生态学
大木屑
粗木屑
森林生态学
生物量(生态学)
障碍
生态系统
河流生态系统
温带气候
温带森林
温带雨林
环境科学
陆地生态系统
地理
温带落叶林
碎片
栖息地
生物多样性
生物
河岸带
气象学
作者
Mark E. Harmon,Jerry F. Franklin,F. J. Swanson,Phillip Sollins,Stanley V. Gregory,John D. Lattin,N.H. Anderson,S.P. Cline,N.G. Aumen,James R. Sedell,George W. Lienkaemper,Kermit Cromack,K.W. CUMMINS
出处
期刊:Elsevier eBooks
[Elsevier]
日期:1986-01-01
卷期号:: 133-302
被引量:3072
标识
DOI:10.1016/s0065-2504(08)60121-x
摘要
Publisher Summary This chapter reviews the rates at which Coarse Woody Debris (CWD) is added and removed from ecosystems, the biomass found in streams and forests, and many functions that CWD serves. CWD is an important component of temperate stream and forest ecosystems and is added to the ecosystem by numerous mechanisms, including wind, fire, insect attack, pathogens, competition, and geomorphic processes. Many factors control the rate at which CWD decomposes, including temperature, moisture, the internal gas composition of CWD, substrate quality, the size of the CWD, and the types of organisms involved. The mass of CWD in an ecosystem ideally represents the balance between addition and loss. In reality, slow decomposition rates and erratic variations in input of CWD cause the CWD mass to deviate markedly from steady-state projections. Many differences correspond to forest type, with deciduous-dominated systems having generally lower biomass than conifer-dominated systems. Stream size also influences CWD mass in lotic ecosystems, while successional stage dramatically influences CWD mass in boat aquatic and terrestrial settings. This chapter reviews many of these functions and concludes that CWD is an important functional component of stream and forest ecosystems. Better scientific understanding of these functions and the natural factors influencing CWD dynamics should lead to more enlightened management practices.
科研通智能强力驱动
Strongly Powered by AbleSci AI