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論文資訊
- 類型：已發表論文
- 日期：2025-07-31
摘要
Increasing drought pressure under anthropogenic 氣候 change may jeopardize the potential of tropical 森林s to capture carbon in woody biomass and act as a long-term carbon dioxide sink. To evaluate this risk, we assessed drought impacts in 483 tree-ring chronologies from across the tropics and found an overall modest stem growth decline (2.5% with a 95% confidence interval of 2.2 to 2.7%) during the 10% driest years since 1930. Stem growth declines exceeded 10% in 25% of cases and were larger at hotter and drier sites and for gymnosperms compared with angiosperms. Growth declines generally did not outlast drought years and were partially mitigated by growth stimulation in wet years. Thus, pantropical 森林 carbon sequestration through stem growth has hitherto shown drought 韌性 that may, however, d
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