[口头报告]Co-regulation of water and energy in the spatial heterogeneity of drought resistance and resilience

Co-regulation of water and energy in the spatial heterogeneity of drought resistance and resilience
编号:3419 稿件编号:1795 访问权限:私有 更新:2023-04-15 15:11:23 浏览:198次 口头报告

报告开始:2023年05月07日 11:23 (Asia/Shanghai)

报告时间:8min

所在会议:[20] 20、地球关键带与全球变化 » [20-2] 20-2 地球关键带与全球变化

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摘要
Vegetation resistance and resilience to drought directly affect terrestrial ecosystem stability under climate change. However, the drivers of spatial heterogeneity in drought resistance and resilience remains poorly understood. Using a satellite-derived vegetation index, we calculated and examined the changes in drought resistance and resilience among different biomes worldwide between 2000 and 2015. On the one hand, drought resistance showed a significant increase with the increase in water availability (r =0.83) but observed no significant relationship between drought resistance and energy. On the other hand, drought resilience showed a significant increase with the increase in energy (r =0.77), with no significant correlation between drought resilience and water availability observed. In addition, drought resistance generally showed a negative correlation with drought resilience across different biomes worldwide. However, the negative correlation between resistance and resilience was significantly stronger in regions with lower water availability than in those with higher ones. These findings provide evidence that water and energy co-regulated the spatial heterogeneity in drought resistance and resilience across the globe. The robust linear relationship between drought resistance and resilience and available water and energy demonstrated in our study is critical to accurately predicting and assessing the impact of climate change on vegetation growth and terrestrial carbon cycling in the future.
关键字
Climate change, resistance, resilience, drought, spatial heterogeneity, vegetation index
报告人
陈娟
中山大学

稿件作者
陈娟 中山大学
陈晓宏 中山大学土木工程学院
刘智勇 中山大学
MaoJiafu Oak Ridge National Laboratory
赵铜铁钢 中山大学
涂铜壁 中山大学
ChengLinyin University of Arkansas
董春雨 中山大学
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庄艳华(13349889826;zhuang@apm.ac.cn)
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