Leveraging the lens of faster growth-mortality tradeoff to assess land carbon storage under global change
報告人簡介
余開亮，2012年于蘭州大學獲得生態學碩士學位，2016年12月于美國弗吉尼亞大學環境科學學院獲得環境科學（生態水文）博士學位，先后在猶他大學、蘇黎世聯邦理工學院、法國氣候環境變化實驗室從事博士后研究和普林斯頓大學副研究員研究，目前為中國科學院地理科學與資源研究所研究員。先后從事旱區半干旱區、森林和地上地下生態學相關的研究，重點關注森林碳匯、養分循環和生態系統穩定性。曾獲得弗吉尼亞大學水文學獎、Joseph K.Roberts獎、論文發表獎等獎項，目前已在PNAS、Science Advances、Nature Communications、Nature Geoscience、Nature Water等國際主流期刊發表學術論文80余篇。作為主要分會會議召集人和主席，主持和召集2016、2017、2022和2023年美國地球物理學會分會，2018年美國生態學分會。
內容簡介
Lands represent a prominent control on the global carbon cycle and considerable uncertainty and debate currently exist in projecting the future capacity of lands to sequester atmospheric CO2. In this talk, I will focus on forests and first present the paradigm of ‘faster tree growth, faster mortality and shorter carbon turnover time’, thus challenging the traditional view of increased forest carbon storage in a future CO2 enriched atmosphere. I will then show how the field-based tree mortality data can be used to reduce the uncertainty of model-projected forest carbon sinks in a future climate. Thirdly I will demonstrate that the tree size and density relationships are strongly associated with forest demography and temporal carbon accumulation rates at the ecosystem scale. Lastly, I will synthesize the worldwide empirical evidence and develop a mathematic framework to demonstrate the increased risks of catastrophic carbon loss over a shorter timescale facilitated by faster biota responses in the Anthropocene.
