FOREST DECLINE AND THE GLOBAL CLIMATE CHANGE
森林衰退与全球气候变化

ince the industrial revolution,the anthropogenic activities have been changing thechemical compositions of the atmosphere,and hence have been changing the global climate.Many studies showed that climate change could influence the growth of forests,and evencould result in forest decline.There would be several possible mechanisms in forest declineinduced by the global climate change. The global warming,precipitation pattern change andevapotranspiration enhancement would bring heat stress and water stress to some forests,which might be detrimental to plant physiological processes.The CO_2 fertilization and its co-operation with the rising atmospheric temperature would promote the metabolism in plants,and accelerate the mature and senescence of trees.Under the condition of the global climatechange,the competition and differentiation between plant species would be strengthened,cli-matic variability and extreme climatic disturbance would be increased,and therefore forestecosvstems would be easier to fall into fluctuation.