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An observational study of the carbon-sink strength of East Asian subtropical evergreen forests
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出 版 社:Environ. Res. Lett.  
发表时间:2012  
台  站: 鼎湖山森林生态系统定位研究站  
作  者:周国逸(5)  
点 击 率:368724
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关 键 字(英文):photosynthesis, eddy flux, soil chamber, respiration, temperature sensitivity, carbon balance  
摘  要(英文):Relatively little is known about the effects of regional warming on the carbon cycle of subtropical vergreen forest ecosystems, which are characterized by year-round growing season and cold winters.We nvestigated the carbon balance in three typical East Asia subtropical evergreen forests, using eddy flux, oil respiration and leaf-level measurements. Subtropical evergreen forests maintain continuous, high ates of photosynthetic activity, even during winter cold periods. Warm summers enhance photosynthetic ates in a limited way, because overall ecosystem productivity is primarily restrained by radiation levels uring the warm period. Conversely, warm climates significantly enhance the respiratory carbon efflux.The finding of lower ensitivity of photosynthesis relative to that of respiration suggests that increased emperature will weaken the carbon-sink strength of East Asia subtropical evergreen forests.  
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周国逸6李7闫10-2012-Environmental Research Letters-An observational study of the carbon-sink strength of East Asian subtropical evergreen forests.pdf
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