干旱对热带植被固碳能力的影响研究进展

Progress in the Impact of Drought on the Carbon Sequestration Capacity of Tropical V egetation Plants

相关学者在热带地区植被生态系统碳汇大小及其驱动机制方面尚存在争议,但普遍认为干旱是影响植被生态系统碳汇功能的最主要胁迫因子。文章梳理了国内外干旱对植被固碳能力的影响研究进展,并就气象环境对植被活动及固碳能力影响的研究方法进行分类和总结。最后就海南如何开展热带地区植被固碳能力研究提出了建议,建议选择与植被光合作用密切相关的监测指标,从干/湿季节和极端干旱事件两个方面研究干旱对热带植被固碳能力的影响。

The sizes of carbon sinks and their driving mechanisms in vegetation ecosystems of the tropics are still controversial among scholars. However, it is generally recognized that drought is the most vital stressor affecting the carbon sink function of vegetation ecosystems. The article compiles the research progress on the effect of drought on the carbon sequestration capacity of vegetation at home and abroad, and it classifies and summarizes the research methods on the effect of the meteorological environment on vegetation activities and carbon sequestration capacity. Finally, it suggests how to research the carbon sequestration capacity of vegetation in the tropics in Hainan, suggests choosing monitoring indicators closely related to vegetation photosynthesis, and studying the effects of drought on the carbon sequestration capacity of tropical vegetation in terms of dry/wet seasons and extreme drought events.