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Global warming is getting worse, the severity of climate change has exceeded the speed at which plants develop adaptive traits through natural evolution. At present, the research on the effects of global warming on plants lacks comprehensive data and conclusion integration, sorting out the effects of global warming on plants and comprehensive protection guidance because of the wide range of directions and ranges involved. In this paper, meta-analysis is used, involving as complete variables as possible, to compare heat stress, salt stress, drought stress and biological symbiotic response. In response to heat stress, the root survival rate and leaf productivity of plants decreased. Imbalance of precipitation will lead to plant necrosis. The difference of nitrogen composition in the air will also lead to the decline of plant productivity. In the future, the trend of global warming is still irreversible. In the face of forest protection, we need to preserve some dominant species, make plants that are more adaptable to natural competition become dominant species, and preserve the forest production capacity. However, we can't completely eliminate species that have lost competitiveness. We need to maintain diversity. This paper considers the comprehensive factors of the forest's response to climate, hoping to avoid extreme forest protection in a certain aspect in all practical work and avoid adverse consequences.
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