Spatial Distribution Of Carbon Storage In Different Carbon Storage Forests In Wuhua County Based On InVEST Model

With the rapid development of human beings,the excessive development and utilization of natural resources has produced a series of ecological problems,of which the global warming problem is the most serious.How to use carbon sink capacity to solve the greenhouse effect is the world's scholars generally concerned about the ecological problems.In this paper,the carbonaceous forest under three different afforestation patterns in the endowment and shrubning,planting interplanting and new afforestation of Wuhua County in Meizhou City of Guangdong Province was studied.The results were analyzed by field plot data and compatible biomass model.Soil carbon content,carbon storage density,forest carbon storage.The spatial distribution characteristics and dynamic changes of forest carbon storage of different carbonaceous forest were analyzed by INVEST model spatial interpolation,which provided scientific basis for the management of carbonaceous forest.The main results of this paper are as follows:(1)The carbon sequestration rate of shrubs under the three afforestation models is:replanting intercropping> new afforestation> closing hillside afforestation;followed by cutting afforestation> replanting afforestation> new afforestation;the litter layer containing carbon In order of replanting interplant> closing hillside afforestation is greater than the new afforestation model,according to the actual growth rate of carbon content in the lower part of the forest,with the passage of time,different subtropical part of the potential for change,including shrub layer part of the new afforestation> In order of afforestation>afforestation> afforestation,the order of afforestation was new afforestation> replanting intercropping> closing hillside afforestation,followed by litter afforestation intercropping>new afforestation> closing hillside afforestation.The carbon sequestration rates were different in different afforestation modes The growth of replanting interplanting compared with other afforestation patterns was larger than that of other afforestation patterns and thechanges were insignificant compared with the whole afforestation pattern.(2)The carbon density of the three afforestation models followed the sequence of replanting> new afforestation> closing hillside afforestation.In the two years of different afforestation periods,the highest carbon density under the three afforestation models was the replanting intercropping pattern.In 2016 and 2017 During the three afforestation modes,the changes of carbon density followed by replanting interplantation> new afforestation>closing hillside afforestation.From the point of view of the growth of carbon sinks,the carbon sinks provided by the carbon sink forests under the mode of replanting will be superior to the other two modes of afforestation.The change of carbon storage in the same afforestation model was relatively stable in different periods,especially in interplanting and intercropping patterns.The spatial variation was significant and the eastern region showed a large increase.The central part was relatively stable.The spatial distribution of the new afforestation model was more single.The carbon density in the northwestern part showed an increasing trend.The distribution of carbon density in the east and west parts of the model was more distributed from the south to the north,and the spatial distribution was more stable in the central part.In the study,the land use types only changed in the woodland while the other parts remained relatively constant.