摘要
大气 CO2 浓度升高所引起的森林生态系统生态稳定性的变化会导致森林在结构和功能上的变动 ,概述了大气 CO2浓度升高和陆地森林生态系统可能性变化之间的相互关系的研究情况。由于大气 CO2 浓度升高出现了额外多的 C,供应 ,讨论了以这些额外多的 C经大气 -植物 -土壤途径的流动走向 ,来研究大气 CO2 浓度的升高 ,与森林结构的相互作用 ,探讨了大气 CO2 浓度升高对森林植物生长、冠层结构、引发的生物量增量的分配、凋落物质量和根质量的变化造成的土壤生态过程的变化、微生物共生体、有机质周转率、营养循环的潜在效应以及气温上升对森林植物产生的可能性影响 ,这些受影响的生物要素和生态过程 ,会引起群落内植物间对资源原有的竞争关系发生变化 ,对资源竞争的格局发生变化最终将会导致森林结构的改变。
Any changes in ecological stability of a forest ecosystem, evoked by increased atmphosheric CO 2 concentrations would lead to its structure fluctuation and functioning variation. This paper reviewed the current researches on the relationship between increased atmospheric CO 2 concentration and the possible change in structures of terrestrial foreste ecosystems. We discussed the way of investigating such interaction by addressing on the flow of extra carbon from increased atmospheric CO 2 concentration through the atmosphere plant soil systems. We explored the potential effects of increased atmospheric CO 2 on forest growth, canopy structure, allocation of extra biomass stimulated by increased CO 2, changes of belowground processes due to reduction of litter and root quality, microbial symbionts, soil organic matter turnover, nutrient cycling, and effect of increased atmospheric temperature on forest plants that would change plant plant competition for resources in the community. The change in competition situation within the community would finally result in alterations in forest structures.
出处
《生态学报》
CAS
CSCD
北大核心
2000年第6期1090-1096,共7页
Acta Ecologica Sinica
基金
国家自然科学基金重大项目!( 39899370 )
广东省自然科学基金重大项目!( 980 952 )
中国科学院"9. 5"重大研究项目!( KZ951 -B1
关键词
大气CO2浓度升高
陆地森林生态系统
群落结构
increased atmospheric CO 2 concentration
terrestrial forest ecosystem
community structure and functT
