摘要
凋落物是森林生态系统的重要组成部分,其累积和分解构成土壤与生物间的物质循环,构成生物地球化学循环的重要环节,发挥着独特的生态功能。森林生态系统凋落物狭义上包括粗木质残体和森林凋落物,每个组成部分各自独成体系,又彼此紧密联系。以往的研究都是从狭义角度上相互独立的研究。本文从凋落物广义概念的角度上,将其分解为森林凋落物、死亡根系和倒木三部分;对凋落物分解的物理化学过程,凋落物分解所受的影响因子,分解与养分释放动态过程和研究方法等内容进行了综述,旨在进行纵向比较,得出森林生态系统凋落物目前的研究进展,阐明目前凋落物研究的动态;总结了当前存在的问题,并对凋落物研究方向进行了展望。
litter fall is an important ecological component in forest ecosystems, it has many crucial ecological functions such as water and soil conservation, preserve biodiversity, energy flow and nutrient cycling et al. Forest ecosystems litter fall including forest litter and coarse woody debris in narrow sense. Component element independently as a system, each other close connection simultaneously. Departed studies is independent each other in narrow sense. This paper mainly study fallen wood, death root system ,forest litter fall in broad sense. The research method, physical and chemical processes of Litter decomposition, influence factors of Litter decomposition and dynamic process of decomposition and nutrient release, which are all reviewed in research progress, Deriving research progress of litter fall in forest ecosystems and elucidating dynamic study of litter currently through Longitudinal compare. The research and development direction of litter fall are discussed, summarizing the existing problems simultaneously.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
北大核心
2009年第2期292-299,共8页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
国家自然基金重大项目(30590381-03)
国家自然基金项目(40763002)
国家林业局林业公益性项目(200704005)
关键词
凋落物
倒木
根系
分解
Litter fall
fallen wood
root system
decomposition
