摘要
凋落物分解是森林生态系统养分循环的关键生态学过程,在陆地生态系统中起着重要作用,是全球碳预算的重要组成部分。凋落物分解速率控制着养分循环和能量流动,进而调节大气中的碳排放、土壤有机质组成和养分有效性。凋落物的化学属性、环境气候、根系以及微生物群落组成等因素调控着凋落物分解速率。通过系统总结凋落物分解的基本理论、根与凋落物分解时根系的作用和调控机制以及凋落物混合分解非加和效应的研究进展,探讨了凋落物分解过程中多因素参与的复杂调控机制,并对未来的研究方向进行展望。
Litter decomposition was a key ecological process of nutrient cycling in the forest ecosystem,which played an important role in the terrestrial ecosystem and was an important part of the global carbon budget.Litter decomposition rate controlled the nutrient cycling and energy flow,and then regulated the carbon emission in the atmosphere,the composition of soil organic matters and the nutrient availability.The chemical properties of litters,environmental climate,root system and microbial community composition regulated the decomposition rate of litter.By systematically summarizing the basic theory of litter decomposition,the role and regulation mechanism of root system during the root and litter decomposition,and the research progress on the non-additive effects of the decomposition of mixed litters,the complex regulation mechanism involved by multiple factors in the process of litter decomposition was discussed,and the future research direction was prospected.
作者
江鸿泓
万晓华
余再鹏
李帅军
许子君
JIANG Hong-hong;WAN Xiao-hua;YU Zai-peng;LI Shuai-jun;XU Zi-jun(State Key Laboratory Breeding Base of Humid Subtropical Mountain Ecology, Fujian Normal University, Fuzhou,Fujian 350007, China;School of Geographical Science, Fujian Normal University, Fuzhou, Fujian 350007, China)
出处
《福建农业科技》
CAS
2022年第2期76-82,共7页
Fujian Agricultural Science and Technology
基金
中国博士后科学基金第13批特别资助(2020T130100)。
关键词
凋落物
混合分解
根系
非加和效应
Litter
Mixed decomposition
Root system
Non-additive effect
