The sizes of carbon sinks and their driving mechanisms in vegetation ecosystems of the tropics are still controver-sial among scholars.However,it is generally recognized that drought is the most vital stressor affecting the carbon sink func-tion 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 mete-orological 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.
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