Spatiotemporal Variations of Carbon Storage in the Natural Forest Protection Project Regions of the Greater Khingan Mountains Based on In VEST Model
To provide scientific basis for ecosystem protection and land use planning in the Natural Forest Protection Project(NFPP)regions of the Greater Khingan Mountains,based on the land use data from 2000 to 2020 and car-bon density data of various regions,the carbon storage module of InVEST model was used to estimate the ecosystem carbon storage in the NFPP regions of the Greater Khingan Mountains during 2000-2020.The impact of mutual conversion between land use types on carbon storage was analyzed by land use transfer matrix.The results showed that:(1)The carbon storages in 2000,2005,2010,2015 and 2020 were 569.87 × 107,573.22 × 107,573.69× 107,572.42×107 and 573.14×107 t,respectively,showing an increasing trend with a cumulative increase of 3.27×107 t;(2)The regions with higher carbon storages were mainly distributed in the north and middle of the study area,while the lower regions were mainly distributed in the west,south,southeast corner and the east of the study area.(3)Forest land was the most important carbon pool in the study area,and its carbon storage accounting for 93.31％of the total carbon sequestration in the study area.The increase in forest land and cultivated land area was the main reason for the increase in carbon storage in the NFPP regions of the Greater Khingan Mountains.The NFPP has pro-moted the stability and growth of forest land in the Greater Khingan Mountains,improving the overall carbon seques-tration capacity of the region.In the future,the Greater Khingan Mountains should continue to implement and con-solidate the NFPP,adhere to the policy of Grain for Green Project,and regulate the conversion of grasslands and cultivated lands to constructive land through reasonable administrative planning.In addition,alleviate grassland deg-radation and restore grassland ecosystems through policies of artificial planting,grass and animal balance,fencing,and optimizing seedlings;On the other hand,cultivated land can increase yield through methods such as intercrop-ping,improving varieties,and rational use of fertilizers.
Greater Khingan MountainsNatural Forest Protection ProjectIn VEST modelcarbon storagespatiotemporal variation
万方数据
维普
