气候变化对树木凋落物分解的影响研究进展

发布时间：2019-05-13 16:22

【摘要】：全球气候变化已成为世界广泛关注的热点。以气候变暖、大气CO_2浓度升高等为主的各种因子对森林生态系统的影响已有大量研究和报道。树木凋落物作为森林生态系统中主要的物质循环载体,其对气候变化的响应近年来也有不少研究,但对影响的结果和机制仍存有不少争议。另外,目前非常缺乏气候变化对树木凋落物分解影响研究最新进展的综合性报道,即便有一些相关进展报道也比较零散,局限于很小的某一领域。因此,本文结合我们多年来在树木凋落物研究基础上,针对气候变化中最常见的几个问题如气候变暖、干旱、大气CO_2和臭氧浓度升高以及氮沉降等5个方面对树木凋落物质量及其分解的影响,就目前国内外有关研究的最新进展做一综合归纳;同时,也对未来有关研究做了简要的展望,以期为完善我国气候变化背景下森林凋落物研究以及丰富森林生态系统物质循环的有关生态学理论提供借鉴。
[Abstract]:Global climate change has become a hot spot in the world. There have been a lot of studies and reports on the effects of various factors, such as climate warming and elevated atmospheric CO_2 concentration, on forest ecosystems. As the main material cycle carrier in forest ecosystem, the response of tree litter to climate change has been studied in recent years, but there are still many disputes about the results and mechanisms of the impact. In addition, there is a lack of comprehensive reports on the effects of climate change on tree litter decomposition, even if some related reports are scattered and limited to a very small field. Therefore, based on the study of tree litter over the years, this paper aims at some of the most common problems in climate change, such as climate warming and drought. The effects of the increase of atmospheric CO_2 and ozone concentration and nitrogen deposition on the quality and decomposition of tree litter were summarized in this paper. At the same time, the related research in the future is also briefly prospected in order to provide reference for perfecting the research of forest litter under the background of climate change in China and enriching the ecological theory of material cycle of forest ecosystem.
【作者单位】：中国科学院森林生态与管理重点实验室(沈阳应用生态研究所);
【基金】：国家自然科学基金项目面上项目(41675153,31270518,31170573) 中科院重点部署项目(KFZD-SW-302-01)资助
【分类号】：S714

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