Capacity of Old Trees to Respond to Environmental Change

查看全文 作　　者：Nathan [1,2]G.Phillips;Thomas [3,4,5]N.Buckley;David [1]T.Tissue

机构地区：[1]Centre for Plant and Food Science,University of Western Sydney;[2]Department of Geography and Environment,Boston University;[3]Department of Biology,Sonoma State University;[4]School of Biological,Earth and Environmental Sciences,University of New South Wales;[5]Bushfire Cooperative Research Centre

出　　处：《Journal of Integrative Plant Biology》索引2008年第50卷第11期,共10页

基　　金：Supported by Discovery Project Number DP0879531 of the Australian Research Council;a University of Western Sydney International Research Schemes Initiative (IRIS) (71827);the National Science Foundation, Divisionof Integrative Organismal Systems (0517521);sabbatical support from Boston University to NGP;from the Bushfire Cooperative Research Centre. 摘　　要：Atmospheric carbon dioxide CO2 has increased dramatically within the current life spans of long-lived trees and old forests.Consider that a 500-year-old tree in the early twenty-first century has spent 70% of its life growing under pre-industrial levels of CO2,which were 30% lower than current levels.Here we address the question of whether old trees have already responded to the rapid rise in CO2 occurring over the past 150 years.In spite of limited data,aging trees have been shown to possess a substantial capacity for increased net growth after a period of post-maturity growth decline.Observations of renewed growth and physiological function in old trees have,in some instances,coincided with Industrial Age increases in key environmental resources,including CO2,suggesting the potential for continued growth in old trees as a function of continued global climate change. 关键词：环境变化二氧化碳古树树木年轮

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Capacity of Old Trees to Respond to Environmental Change

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