论文部分内容阅读
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。
Global climate change has become a hot spot of widespread concern in the world. A great deal of research and reports have been made on the impact of various factors such as warming of climate and atmospheric CO 2 concentration on forest ecosystems. Tree litter, as the main material circulation carrier in forest ecosystem, has also been studied in response to climate change in recent years. However, there are still many controversies on the results and mechanism of the impact. In addition, at present, there is a lack of comprehensive reports on the latest progress of research on the effects of climate change on litter decomposition, even though some related progress reports are fragmented and confined to a very small area. Therefore, based on our research on tree litter for many years, this paper aims to study the effects of climate change on some of the most common climate changes such as climate change, drought, atmospheric CO 2 and ozone concentration, and nitrogen deposition Quality and its decomposition, summarize the latest progress of relevant research both at home and abroad. At the same time, we also make a brief prospect of the related research in the future, in order to improve forest litter research and rich forest ecology in the context of climate change in China System of material recycling related ecological theory to provide reference.