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摘要: 凋落物分解是陆地生态系统物质循环的一个重要环节。在介绍凋落物分解一般过程及其影响因素的基础上,论述了全球环境变化背景下,酸沉降增加、林火增多、土地利用变化等环境因子对凋落物分解的影响。酸沉降通常是影响凋落物分解的重要因素之一,其中氮沉降对凋落物分解有促进、抑制或无明显影响等3种作用。林火发生后短期内对凋落物分解有抑制作用,长期则逐渐转变为积极的促进作用。土地利用变化则因转变方式不同而对凋落物分解产生积极或消极的影响。今后亟待加强多个环境因子对凋落物分解复合作用影响的研究和长期观测。参52Abstract: Litter decomposition is an important part of biogeochemical cycle in terrestrial ecosystems. This paper firstly described the general process of litter decomposition and the factors influencing decomposition. Then the effects of several environment factors,including acid deposition,forest fire,land use change,on litter decomposition were discussed. Acid deposition played an important role in the litter decomposition. As a main type of acid deposition,nitrogen deposition could promote,inhibit or have no significant effect on litter decomposition. Forest fire would inhibit litter decomposition in a short period of time,but would accelerate decomposition in the long time. The land use change could have a positive or negative effect on litter decomposition depending on the different ways of the change. The future research should focus on the combined interaction of multiple environmental factors on the litter decomposition. [Ch,52 ref.]
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Key words:
- forest ecology /
- litter decomposition /
- acid deposition /
- forest fire /
- land use change /
- combined interaction /
- review
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2013.05.017
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