Effects Of Different Land Use Patterns On Carbon Emission Of Hunan Province

Increasing carbon dioxide emissions have led to serious global climate change.Most of the carbon emissions are caused by energy consumption and land use changes.Land use carbon emissions have become a hot spot of concern.Global carbon emissions continue to increase,and my country has become the world’s largest carbon emitter.In the future,my country’s economic and social development must adopt low-carbon emission reduction measures.Hunan Province is one of the provinces under the national strategy for the rise of the central region.With the rapid social and economic development of the province,regional land use changes are obvious.In the context of the current era,it is of great practical significance to study the carbon emission effects caused by the transformation of land use types in Hunan Province.This study uses the area and energy consumption data of different land use types in Hunan Province from 2005 to 2018,analyzes the change trends of various land use types in Hunan Province from 2005 to 2018,uses carbon accounting models to calculate carbon emissions/absorption,and uses carbon emissions Intensity indicators,carbon footprint related models,and decoupling elastic models,explore the carbon emission effects of land use,and finally analyze the influencing factors of carbon emissions,combined with the actual situation of Hunan Province,put forward countermeasures and suggestions for optimizing land structure and developing low-carbon economy,In order to provide a theoretical basis for Hunan Province to formulate low-carbon emission reduction policies.The results of the study showed that:(1)The land use changes in Hunan Province from 2005 to 2018 were significant,and the construction land increased by 25.57×10~4hm~2,the most obvious change.Forest land,construction land,and unused land are increasing,while arable land,grassland,and water are constantly decreasing.Urbanization has continuously expanded the scale of urban land use,and changes in other land types are related to the expansion of urban construction land.(2)From 2005 to 2018,the carbon emissions of Hunan Province have been on a continuous rise,with a relatively large increase.The net carbon emissions increased from 7518.45×10~4t in 2005 to 11058.53×10~4t in 2018,with a growth rate of 47.09%.The increase in carbon emissions is much greater than the increase in carbon absorption,and the carbon sink effect of Hunan Province is not significant,and the carbon emissions cannot be offset.(3)In 2015,the carbon emissions of various cities and prefectures were significantly different,and most of the carbon emissions were concentrated in the Changzhutan urban agglomeration and surrounding areas.(4)From 2005 to 2018,the total energy carbon footprint of Hunan Province continued to rise,and the ecological deficit increased year by year.The ecosystem of Hunan Province cannot offset the carbon emissions generated by energy consumption.(5)There is a positive relationship between Hunan’s economic level and land use carbon emissions,and the state between the two can be summarized into three stages:weak decoupling,strong decoupling,and expansion connection.(6)There are differences in the degree of contribution of various influencing factors to carbon emissions.The biggest impact on carbon emissions is energy efficiency and economic level.Positive influencing factors include population size,economic level,and land use structure,while negative influencing factors include energy structure.And energy efficiency.