关键词: 森林植被, 碳储量, 碳密度, 区域空间分布, 云南省

Abstract:

By using the data from the Second Survey of Forest Resource Inventory of Yunnan in 2016,we use the methods of Variable Biomass Extension Factor Method and average biomass computing method,and combine them with the calculation parameters of different age grades of each tree species.The carbon storage and density in different stands of forest are estimated and their spatial patterns are analyzed.The results show that the total carbon storage of forest vegetation is 892.596 Tg,and the average forest carbon density is 39.260 t/hm².The carbon storage of arbor forest account for 95.67% of the total carbon storage;and that of trees Yunnan pine (Pinus yunnanensis) and oak accounted for 58.34% of the total carbon storage of arbor forest;their amount increase with developed stages in time,and the carbon storage of young and middle-aged forests only account for 49.97% of the total carbon storage of arbor forest;both of carbon storage and carbon density in natural forest are higher than that in artificial growth forest and plantation forest.The spatial distribution of both of that in Yunnan province is generally higher in the western regions but lower in the eastern regions.For management consideration we suggest that geological and environmental conditions and anthropogenic effects may be the important factors leading to uneven distribution of that.It is an important way to improve the forest carbon storage and carbon storage per unit area in the whole province by strictly protecting and restoring the forest vegetation in the rocky desertification area,it is necessary to carry out the project of precise improvement of forest quality,strengthening the artificial afforestation,tending and the management toward the closure of forests in the mountain and raising the forest,etc.

Key words: forest vegetation, carbon storage, carbon density, spatial distribution, Yunnan province