Abstract:

The forest is one of the important carbon pool in terrestrial ecosystems,it plays an irreplaceable role in reducing the accumulation of greenhouse gases and slowing global warming.So accurately estimating and analysing vasious carbon storage of terrestrial ecosystem ,carbon density,realistic assessment of the different types of vegetation and soil carbon storage capacity played the important role played in treasonable evaluation of terrestrial ecosystems in the global carbon cycle.Forest carbon sequestration is the key parameters to researching the relationship between forests and atmospheric carbon exchange and estimateing the forest absorption or the emission of carboncontaining gas.We can study them through traditional harvest method,the method of sample investigation,the method of tree rings,the method of estimation by Remote Sensing,the method of flux measurement and model simulation.The biomass of forest communities is the best indicator of the productivity of the forest.The biomass of forest communities which is also the most direct expression of the level of ecosystems.Forest ecosystem structure and function is also a comprehensive reflection of the quality of the environmental quality of the forest ecosystem.Forest carbon storage is the basic parameters of studying the exchange of carbon between the forest and the atmosphere.Based on ecological function and forest resources inventory data in Qinghai province and the Biomass Expansion Factor (BEF) method we estimated carbon storage and carbon density of forest vegetation in Qinghai Province,China.We found the results showed that the carbon storage of arbor forest in Qinghai Province is 11 182 642.22 t,the date accounting for 1.98% of the same period of the country's total carbon storage.Accounting to our analysis,the middleaged forest type is a larger proportion of carbon storage which have not yet reached the maximum,and if people utilize a better management it will have its development space in forest ecosystem of Qinghai Province.The first four natural forest types in carbon storage of Qinghai Province in the past 20 years are: Chamaecyparis funebris Betula spp Populus Picea asperata,which shows that these types of natural forests in Qinghai forest vegetation occupies an important position.The estimation method of The carbon storage in this paper still have problems that we should consider different forest types and use different methods of calculation