| Forest resources have great carbon storage capacity in terrestrial ecosystems.With the rapid development of industrialization,the increasing demand of human beings for natural resources has led to the corresponding increase of CO2emissions to the atmosphere,the global climate has changed,and the greenhouse effect has been increasing,has become the global ecology sustainable development and the international economic society common faces the stern challenge.Therefore,the estimation of forest biomass and carbon stock is a key parameter in the study of global carbon cycle,which has a long-term significance for the study of forest carbon sink.The arbor forest of Narisitai Forest Farm in Chayouzhongqi was the research object of this study,based on the 2017 second-class survey data of forest resources,the distribution of forest resources in Narisitai forest farm was analyzed.,the biomass was calculated using the IPCC metrological parameter method.The carbon storage and carbon density were calculated and analyzed by different tree species,different origins,different ages and different species structure in Narisitai forest farm,which provided an important basis for the forest carbon storage capacity of this forest farm,and provides a favorable data base for forest carbon sequestration and carbon enhancement in this region The results are as follows:（1）Through the analysis of the results of the second-class survey of forest resources in Narisitai forest farm,it was found that the dominant species of Birch in the natural secondary forest were the most significant,and the tree species composition,the origin of the forest,the age group structure,the volume and area of the forest-type structure were analyzed respectively.Among them,the area of forest land was 5564.23 hm2;Accounted for 19.12%of forest area;The main tree species were Birch and Larch,and the total area of Birch and Larch accounted for 97.19%of the total area of arbor forest;In the area of different forest ages,the area of middle-aged forests was the largest and accounted for67.77%of the total area;The area of the natural secondary forest accounted for a large proportion,accounted for 80.51%of thel area of the arbor forest,the area of artificial forest was only 19.49%of forest area.The shrub area was 11297.75 hm2 and accounted for 38.82%of forest area.（2）Results found that the maximum biomass was Dannangou forest area and the minimum biomass was Shilan forest area,which were 48103.29t and 10162.63t respectively.The biomass of betula platyphylla was the highest among the tree species of arboreal forest,which was 135102.78t.The biomass of larch was followed by 38459.73t.（3）The results of carbon density and carbon storage in the forest farm showed that,according to the forest area,Dannangou forest area had the largest carbon storage（24,302.85 t）and Shilan forest area had the least carbon storage（5200.00 t）;According to the tree species structure,birch and larch were the main species in Narisitai forest farm,accounted for 97.51%of the total carbon storage of arbor forest,and the average carbon density of both was 17.99 t/hm2;According to different origins,natural forest was the main body of Narisitai forest farm,which occupied 80.51%of forest area,and carbon storage accounted for 75.76%of the total carbon storage of arbor forest;According to forest species structure,Soil and water conservation forest was the main forest,accounted for 77.08%of the total carbon storage;According to the age of the forest,the middle-aged birch forest was the main forest,accounting for 67.66%of the dominant tree species of arbor forest,and the carbon storage accounted for 67.66%of the total carbon storage of the dominant tree species.On the whole,the carbon density of each arbor forest increased with the age of tree species.Among them The carbon density was the highest in mature forest of Larch and the lowest in young forest of Pinus sylvestris.At the stage of young forest transiting to middle age forest and middle-age forest transiting to near mature forest,there were e more tree species in arbor forest,with the largest increased in carbon density,while the middle-age forest had the highest carbon storage.On that day,the arbor forest in Stellenchang Forest Farm has a large carbon sink potential Arbor forest in Narisitai forest farm had a large potential of carbon storage. |
