大气中CO2浓度的变化和影响研究

he rapid increase and doubled present in atmospheric CO2 concentration raises the interest again in the reason and effects of it recently several decades .The reasons of increasing in [CO2] in atmosphere mainly is man-made, including emission from fossil-fuel combustion, disafforestation and changes of land-use. But emission of CO2 from fossil-fuel combustion is very important. Elevated atmospheric CO2 will affect environmental condition and C balance in ecosystem and accelerate turnover of C. Though various budgets and estimates in models, the contribution of different resource and uptake of atmospheric CO2 is different and unconfirmed. Now the research scale is quietly large, but the strength small, deep deficient and results variable. We still need much more research conducted at a long-term, all-over, deeply and painstakingly.