Font Size: a A A

The Evolution Of Carbon Expenditure In The Middle And Lower Reaches Of The Yellow River

Posted on:2023-06-21Degree:MasterType:Thesis
Country:ChinaCandidate:X W YangFull Text:PDF
GTID:2531307145452114Subject:Geography
Abstract/Summary:PDF Full Text Request
Carbon neutrality and carbon peak are important strategies to promote the construction of ecological civilization in China.Quantitative analysis of the spatial and temporal evolution of carbon revenue and expenditure and its driving factors are of great theoretical and practical significance for the realization of strategic goals and urban low-carbon transformation.At present,the national and provincial-scale carbon emission categories and accounting methods have achieved transparent and comparable research results.However,due to poor data availability.In addition,studies on carbon absorption are relatively weak.This is not good for cities to develop a scientific and reasonable roadmap for carbon peak reaching and carbon neutrality.As the middle and lower reaches of the Yellow River,one of the important energy production bases and grain production bases in China,faces great challenges in reaching carbon peak and carbon neutrality.Therefore,the analysis of the spatial and temporal evolution of carbon emission,carbon absorption,and carbon revenue and expenditure in this region will help to alleviate the pressure of low-carbon transformation in the middle and lower reaches of the Yellow River,and promote the high-quality coordinated development of ecological and economic development in the Yellow River Basin.From urban area carbon emissions and carbon absorption“structure-pattern-process”perspective,based on energy statistics,using the IPCC emission coefficient method analysis of different carbon emissions pattern evolution,based on Landsat remote sensing image data,analysis of different land use types of carbon absorption characteristics,and determine the net carbon emission high concentration area of energy category and dominant land type.STIRPAT model is used to conduct quantitative analysis of the driving factors of the spatial and temporal evolution of net carbon emissions,and analyze the key factors affecting the spatial difference of carbon revenue and expenditure combined with Dubin model.Finally,based on the empirical research results,the strategy is proposed for low carbon absorption,high carbon emission and high unbalanced carbon balance,in order to provide reference for reducing the regional carbon emission pressure and achieving carbon peak and carbon neutrality goals.The study findings are as follows:(1)The middle and lower reaches of the Yellow River showed a significant increase in carbon emissions from 2000 to 2015.Carbon emissions in 2015 were 847,776,800 t,an increase of 540,399,800 t from 2000.From 2000 to 2010,the high carbon emission areas in the middle and lower reaches of the Yellow River showed a sharp spread from the center to the periphery,and the pattern changed gradually from 2010 to 2015.The high-value carbon emissions in the middle and lower reaches of the Yellow River are mainly distributed in the Shanxi Plateau,the Yellow River Delta and the Yellow River Haihe River Plain.Low carbon emission areas are mainly distributed in southern cities with small population and basic agriculture or advanced services as the pillar industries.From the perspective of carbon emission structure,the industrial carbon emission of each city occupies the absolute high value in the past 15 years,and the high value area is located in the northeast of the research area.The proportion of carbon emissions from the transportation industry is the second place,and its high-value areas are mainly distributed in international and national comprehensive transportation hub cities.The third among the total carbon emissions is the carbon consumption of residents.In space,the dividing line of the middle reaches and the lower reaches is the dividing line between the middle reaches and the lower reaches of the Yellow River.(2)From 2000 to 2018,carbon absorption in the middle and lower reaches of the Yellow River showed a slow increase.In 2018,the carbon absorption amount in the middle and lower reaches of the Yellow River was 6.9958 million t,an increase of 213,700 t compared with 2000.In 18 years,the carbon absorption in the middle and lower reaches of the Yellow River showed a high distribution pattern in west and low distribution in east,and the spatial pattern was stable.High value of carbon absorption is mainly located in sparsely populated,high grassland coverage and high altitude mountain forest areas.Low-value areas are mainly located in economically developed provincial capital cities and traditional agricultural areas.From the perspective of carbon absorption structure,the carbon absorption capacity from strong to weak is forest land,grassland,water area and arable land.Among them,the carbon absorption of forest land shows a significant spatial distribution pattern of“high in west and low in east”,and the cumulative carbon absorption of forest land in upstream cities accounts for more than 80%.Grassland carbon absorption in cities located in the upper reaches of the Yellow River is significantly greater than that in the lower reaches of the city.The carbon absorption in the eastern boundary cities shows a stable high value state,and the carbon absorption in other cities except the upstream Ordos is in the low state.The difference in the spatial distribution of cultivated land is relatively small,and the carbon absorption of more than 93%of urban cultivated land is on a downward trend.(3)In the middle and lower reaches of the Yellow River,the total carbon absorption of ecological land from 2000 to 2015 is not enough to compensate for the carbon emissions of human energy consumption activities,which is manifested as net carbon emissions.Carbon balance ratio(carbon absorption/carbon emissions)fell from 2.21%in 2000 to 0.80%in 2015.There are significant spatial differences in the net carbon emissions in the middle and lower reaches of the Yellow River.On the whole,the net carbon emissions in the middle and lower reaches of the Yellow River show a distribution pattern in the middle and low in the southeast.The local spatial agglomeration types of net carbon emission in the middle and lower reaches of the Yellow River are mainly“H-H agglomeration”and“L-L agglomeration”types.The high-value agglomeration area is always located in the Haihe Plain area,where the spatial agglomeration trend is increasing.The low-value agglomeration area is mainly distributed in the Huang-Huai Plain,showing an obvious trend of increasing first and then decreasing.(4)The increase in the proportion of the secondary industry(I1),population(P),the proportion of the tertiary industry(I2),per capita GDP(A1)and land urbanization rate(A3)will all lead to the increase in net carbon emissions in the middle and lower reaches of the Yellow River.Among them,the proportion of the secondary industry is the primary factor affecting the increase of net carbon emissions in the middle and lower reaches of the Yellow River,and the population number is the key factor affecting the net carbon emissions in the middle and lower reaches of the Yellow River.In addition to the proportion of the tertiary industry,the changes in the total population,per capita GDP,land urbanization rate and the proportion of the secondary industry of the neighboring cities will have a negative impact on the net carbon emissions of the neighboring cities.The proportion of the secondary industry and the number of population have the biggest direct effect on net carbon emissions,that is,each positive change will lead to the city’s net carbon emissions increased by 1.26%and 0.94%,respectively.All factors except the negative spatial spillover effect of population.(5)Identify the heavy pressure areas of energy conservation and emission reduction according to the trend of carbon emission evolution,and reduce the net carbon emissions caused by industrial development by reasonably adjusting the industrial structure of the middle and lower reaches of the Yellow River and promoting the utilization intensity of clean energy.And from the low carbon perspective,maintain the population size expansion at a low speed,so as to reduce the human excessive exploitation and demand of the environment.Combined with the unbalanced spatial distribution of urban carbon absorption,the ecosystem compensation mechanism should be established to improve the carbon absorption function of ecological land according to local conditions.Government should respectively from the perspective of regional and city in economic growth and establish balance between emission reduction,based on urban actual economic development level set the corresponding emissions targets,different carbon emissions,carbon absorption background between establishing perfect ecological and economic linkage mechanism,promote its synergistic reduction effect at the macro level,further realize the strategic goal of coordinated economic and ecological development.
Keywords/Search Tags:carbon budget, spatial and temporal evolution, STIRPAT, spatial dubin model, the middle and lower Yellow River
PDF Full Text Request
Related items