scholarly journals A Vector Map of Carbon Emission Based on Point-Line-Area Carbon Emission Classified Allocation Method

2020 ◽  
Vol 12 (23) ◽  
pp. 10058
Author(s):  
Hongjiang Liu ◽  
Fengying Yan ◽  
Hua Tian
Keyword(s):  
Carbon Emission ◽  
Central City ◽  
Carbon Sources ◽  
Low Carbon ◽  
Carbon Reduction ◽  
Allocation Method ◽  
Land Use Types ◽  
Reduction Strategies ◽  
The Government ◽  
Point Line

An explicit spatial carbon emission map is of great significance for reducing carbon emissions through urban planning. Previous studies have proved that, at the city scale, the vector carbon emission maps can provide more accurate spatial carbon emission estimates than gridded maps. To draw a vector carbon emission map, the spatial allocation of greenhouse gas (GHG) inventory is crucial. However, the previous methods did not consider different carbon sources and their influencing factors. This study proposes a point-line-area (P-L-A) classified allocation method for drawing a vector carbon emission map. The method has been applied in Changxing, a representative small city in China. The results show that the carbon emission map can help identify the key carbon reduction regions. The emission map of Changxing shows that high-intensity areas are concentrated in four industrial towns (accounting for about 80%) and the central city. The results also reflect the different carbon emission intensity of detailed land-use types. By comparison with other research methods, the accuracy of this method was proved. The method establishes the relationship between the GHG inventory and the basic spatial objects to conduct a vector carbon emission map, which can better serve the government to formulate carbon reduction strategies and provide support for low-carbon planning.

scholarly journals Carbon Emission Estimation of Assembled Composite Concrete Beams during Construction

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1810
Author(s):  
Kaitong Xu ◽  
Haibo Kang ◽  
Wei Wang ◽  
Ping Jiang ◽  
Na Li
Keyword(s):  
Life Cycle ◽  
Carbon Emissions ◽  
Emission Reduction ◽  
Carbon Emission ◽  
Composite Beams ◽  
Total Carbon ◽  
Construction Process ◽  
Low Carbon ◽  
Carbon Emission Reduction ◽  
The Government

At present, the issue of carbon emissions from buildings has become a hot topic, and carbon emission reduction is also becoming a political and economic contest for countries. As a result, the government and researchers have gradually begun to attach great importance to the industrialization of low-carbon and energy-saving buildings. The rise of prefabricated buildings has promoted a major transformation of the construction methods in the construction industry, which is conducive to reducing the consumption of resources and energy, and of great significance in promoting the low-carbon emission reduction of industrial buildings. This article mainly studies the calculation model for carbon emissions of the three-stage life cycle of component production, logistics transportation, and on-site installation in the whole construction process of composite beams for prefabricated buildings. The construction of CG-2 composite beams in Fujian province, China, was taken as the example. Based on the life cycle assessment method, carbon emissions from the actual construction process of composite beams were evaluated, and that generated by the composite beam components during the transportation stage by using diesel, gasoline, and electric energy consumption methods were compared in detail. The results show that (1) the carbon emissions generated by composite beams during the production stage were relatively high, accounting for 80.8% of the total carbon emissions, while during the transport stage and installation stage, they only accounted for 7.6% and 11.6%, respectively; and (2) during the transportation stage with three different energy-consuming trucks, the carbon emissions from diesel fuel trucks were higher, reaching 186.05 kg, followed by gasoline trucks, which generated about 115.68 kg; electric trucks produced the lowest, only 12.24 kg.

scholarly journals Is There Any Difference in the Effect of Different R and D Sources on Carbon Intensity in China?

2019 ◽  
Vol 11 (6) ◽  
pp. 1701 ◽  
Author(s):  
Feng Feng ◽  
Linlin Peng
Keyword(s):  
Critical Issue ◽  
Government Support ◽  
Carbon Intensity ◽  
Threshold Regression ◽  
Carbon Reduction ◽  
R And D ◽  
Reduction Strategies ◽  
Great Pressure ◽  
The Government ◽  
Threshold Regression Model

In recent decades, climate change, mostly caused by CO2 emissions, has become a critical issue of concern to people worldwide. It is necessary for countries all around the world to reduce carbon emissions. China, as the world’s largest carbon emitter, is under great pressure to implement carbon-reduction strategies. Technological progress plays a crucial role in balancing environmental and economic development. The main objective of this work is to empirically compare the effects of government and enterprise research and development (R and D) on carbon-emission reduction using the panel data of 30 Chinese provinces from 2009 to 2016. The effects of both government and enterprise R and D investment on carbon intensity are compared in detail through a linear model and a threshold-regression model. Linear-regression results shows that both government and enterprise R and D decrease carbon intensity, while enterprise investment tends to be more instant. Further threshold-regression results indicate that the effects of government and enterprise R and D on carbon intensity are different in different urbanization stages. Guiding enterprises to invest in R and D in medium-developing areas, and increasing government support and subsidies for R and D activities in underdeveloped areas should be an important goal of the government policies.

scholarly journals Constructing the Embodied Carbon Flows and Emissions Landscape from the Perspective of Supply Chain

2018 ◽  
Vol 10 (11) ◽  
pp. 3865 ◽  
Author(s):  
Qingjian Zhao ◽  
Zuomin Wen ◽  
Anne Toppinen
Keyword(s):  
Supply Chain ◽  
Process Management ◽  
Hot Spot ◽  
Carbon Sources ◽  
Pulp And Paper ◽  
Chain Model ◽  
Low Carbon ◽  
Embodied Carbon ◽  
Multi Level ◽  
The Government

From the perspective of supply chain, benchmarking the embodied carbon flows and emissions landscape is to study the carbon footprint in supply chain production and process management. On the basis of the theory of a green supply chain, this paper conducted its research through the following steps. First, a multi-level supply chain model was proposed and established, and various sectors, production and management processes, and inputs and outputs of different resources were integrated into the supply chain network, and then divided into multiple levels. Second, a multi-level embodied carbon flow and emissions model was established through the Leontief Inverse. Third, based on the operation data of forestry-pulp and paper companies, the embodied carbon flows and emissions at all levels and sectors were estimated and analyzed. Finally, the dismantling and processing methods of complex carbon network structures were explored, the hot-spot carbon sources and paths were obtained, and the low-carbon innovation and development strategies were proposed. The research results show that: (1) Supply chain is a new idea and carrier to study the spatial and state changes of carbon, and also provides a platform for spatial landscape analysis of carbon; (2) The modeling and calculation of carbon flows and emissions offer a new solution of evaluating the environmental performance of companies with high pollution and emission such as forestry-pulp and paper companies, and provide the government effective technical support to implement environmental regulations and formulate carbon emission reduction policies.

scholarly journals The Impact of Government Subsidies on the Low-Carbon Supply Chain Based on Carbon Emission Reduction Level

2021 ◽  
Vol 18 (14) ◽  
pp. 7603
Author(s):  
Biao Li ◽  
Yong Geng ◽  
Xiqiang Xia ◽  
Dan Qiao
Keyword(s):  
Emission Reduction ◽  
Carbon Emission ◽  
Wholesale Price ◽  
Retail Price ◽  
Low Carbon ◽  
Carbon Emission Reduction ◽  
Government Subsidies ◽  
Carbon Supply ◽  
The Government ◽  
The Impact

To improve low-carbon technology, the government has shifted its strategy from subsidizing low-carbon products (LCP) to low-carbon technology. To analyze the impact of government subsidies based on carbon emission reduction levels on different entities in the low-carbon supply chain (LCSC), game theory is used to model the provision of government subsidies to low-carbon enterprises and retailers. The main findings of the paper are that a government subsidy strategy based on carbon emission reduction levels can effectively drive low-carbon enterprises to further reduce the carbon emissions. The government’s choice of subsidy has the same effect on the LCP retail price per unit, the sales volume, and the revenue of low-carbon products per unit. When the government subsidizes the retailer, the low-carbon product wholesale price per unit is the highest. That is, low-carbon enterprises use up part of the government subsidies by increasing the wholesale price of low-carbon products. The retail price of low-carbon products per unit is lower than the retail price of low-carbon products in the context of decentralized decision making, but the sales volume and revenue of low-carbon products are greater in the centralized decision-making. The cost–benefit-sharing contract could enable the decentralized decision model to achieve the same level of profit as the centralized decision model.

scholarly journals A Study on the Factors Affecting China’s Direct Household Carbon Emission and Comparison of Regional Differences

2019 ◽  
Vol 11 (18) ◽  
pp. 4919 ◽  
Author(s):  
Jingbo Fan ◽  
Aobo Ran ◽  
Xiaomeng Li
Keyword(s):  
Carbon Emissions ◽  
Rural Areas ◽  
Carbon Emission ◽  
Low Carbon ◽  
Systematic Analysis ◽  
Factors Affecting ◽  
Man And Nature ◽  
Urban Rural ◽  
The Government ◽  
Urban And Rural Areas

As the world’s largest emitter of greenhouse gases, China has been attracting attention. In the global carbon emission structure, the proportion of household carbon emissions continues to increase, and it is necessary to focus on the issue of household emissions. Based on the perspective of the family sector and the comparison of urban–rural and interprovincial differences, this study makes a thorough and systematic analysis of the factors affecting direct household carbon emissions. The average carbon emission of urban households is higher than that of rural households. Both personal background and household energy consumption facility use have important impacts on household carbon emissions, and the degree of impact varies between urban and rural areas and between provinces. Reducing household carbon emissions and achieving a harmonious coexistence between man and nature are the common goals of the government and society. The government should explore the model of green sustainable development on the basis of ensuring the energy needs of residents. Residents should also further establish a low-carbon life concept and focus on the cultivation of low-carbon lifestyles.

Analysis of Carbon Emission Structure of Agricultural Ecosystem - A Case Study of Rural Areas Surrounding Yuqiao Reservoir in Ji County of Tianjin, China

2014 ◽  
Vol 675-677 ◽  
pp. 1859-1864
Author(s):  
Xue Mei Li ◽  
Yan An Yang ◽  
Guang Ju Hao
Keyword(s):  
Carbon Emissions ◽  
Carbon Emission ◽  
Carbon Sources ◽  
Rural Life ◽  
Total Emission ◽  
Low Carbon ◽  
Agricultural Ecosystem ◽  
Yuqiao Reservoir ◽  
Basic Work ◽  
Main Carbon

With the development of low carbon economy, there is increasing interest in integrating the idea of low carbon into rural life and agricultural ecosystem. Determination of the main carbon sources from agricultural ecological system is an important basic work to reduce carbon emissions and construct the low carbon new countryside. In this paper seven towns surrounding Yuqiao Reservoir as investigation objects were used to determine the main carbon sources. It has been found that land respiration is the main carbon emission sources of agriculture ecosystem through calculation and analysis. Carbon emissions produced by the land respiration account for 51.68% of the total emission, followed by carbon emissions generated by the rural life, which account for 42.37% of the total emission. Control of land planting structure and use of low carbon new energy are the main direction of rural carbon emission reduction in the future.

scholarly journals Upstream-Downstream Joint Carbon Reduction Strategies Based on Low-Carbon Promotion

2018 ◽  
Vol 15 (7) ◽  
pp. 1351 ◽  
Author(s):  
Xiqiang Xia ◽  
Junhu Ruan ◽  
Zhiru Juan ◽  
Yan Shi ◽  
Xuping Wang ◽  
...  
Keyword(s):  
Low Carbon ◽  
Carbon Reduction ◽  
Reduction Strategies

scholarly journals The Impact of Different Government Subsidy Methods on Low-Carbon Emission Reduction Strategies in Dual-Channel Supply Chain

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Cheng Che ◽  
Yi Chen ◽  
Xiaoguang Zhang ◽  
Zhihong Zhang
Keyword(s):  
Supply Chain ◽  
Emission Reduction ◽  
Carbon Emission ◽  
Low Carbon ◽  
Carbon Emission Reduction ◽  
Direct Sales ◽  
Dual Channel ◽  
The Government ◽  
Dual Channel Supply Chain ◽  
Low Carbon Emission

With the implementation of national carbon emission reduction policies and the development of online shopping, manufacturers are making low-carbon efforts and selling products through dual channels. This paper constructs a dual-channel supply chain decision-making model composed of low-carbon emission reduction manufacturers and retailers and studies the optimal decision-making problem of the supply chain under subsidies by the government based on emission reduction R&D and per unit product emission reduction. The research results show the following: (1) when the government subsidizes emission reduction R&D, the emission reduction will have an impact on retailers’ optimal prices, manufacturers’ optimal wholesale prices, and optimal direct sales channel sales prices. The profit of the manufacturer increases with the increase in carbon emissions, and the profit of the manufacturer increases to a certain level and then appears to decline. (2) When the government adopts a subsidy method based on the emission reduction per unit product, the manufacturer’s wholesale price and the selling price of direct sales channels, as well as the retailer’s own optimal price, will increase with the increase in emission reductions. Retailers’ profits will increase linearly with the increase in carbon emissions. Manufacturers’ profits will first increase in a straight line and then increase in a curve.

scholarly journals A Carbon Emission Measurement Method for Individual Travel Based on Transportation Big Data: The Case of Nanjing Metro

2020 ◽  
Vol 17 (16) ◽  
pp. 5957 ◽  
Author(s):  
Wei Yu ◽  
Tao Wang ◽  
Yujie Xiao ◽  
Jun Chen ◽  
Xingchen Yan
Keyword(s):  
Big Data ◽  
Carbon Emissions ◽  
Carbon Dioxide Emissions ◽  
Carbon Emission ◽  
Carbon Tax ◽  
Smart Cards ◽  
Complex Method ◽  
Emission Measurement ◽  
Carbon Reduction ◽  
The Government

With the strengthening of environmental awareness, the government pays much more attention to environmental protection and thus implements carbon trading schemes to promote the reduction of global carbon dioxide emissions. The carbon Generalized System of Preferences (GSP) is an incentive mechanism for citizens to value their energy conservation and carbon reduction. Individual travel needs to rely on various means of transportation, resulting in energy consumption. Carbon tax or subsidy can only be carried out after carbon GSP accurately measures individual carbon emissions. The big data acquired from the smart cards of passengers’ travels provide the possibility for carbon emission accounting of individual travel. This research proposes a carbon emission measurement of individual travel. Through establishing the network model of the Nanjing metro with a complex method, the shortest path of the passengers’ travels is obtained. Combined with the origination–destination (OD) records of the smart cards, the total distance of the passengers’ travels is obtained. By selecting the operation table to estimate the carbon emissions generated by the daily operation of the subway system, the carbon emissions per kilometer or per time of passenger travel are finally obtained. With the accurate tracking of carbon emissions for individual travel, the government may establish a comprehensive monitoring system so as to establish a carbon tax and carbon supplement mechanism for citizens.

scholarly journals A Decision-Making Model of Low-Carbon Supply Chain Based on Government Subsidy

2016 ◽  
Vol 11 (2) ◽  
pp. 221
Author(s):  
Xu Qi ◽  
Xiao Li-Jun
Keyword(s):  
Supply Chain ◽  
Carbon Emission ◽  
Positive Impact ◽  
Environmental Benefits ◽  
Fixed Cost ◽  
Government Subsidy ◽  
Low Carbon ◽  
Emission Abatement ◽  
Carbon Supply ◽  
The Government

In order to study the role of government subsidy in a low-carbon supply chain, a two-stage game model for the subsidy of low-carbon technology and the subsidy of recycling is built. And the optimized subsidy strategy under the two kinds of subsidy policies is obtained. This paper also studies the impacts of carbon emission abatement, subsidy and the factors of subsidy on the supply chain and the government, so as to compare the two kinds of subsidy strategy. This study shows that the coefficient of environmental benefits has a positive impact on the two kinds of subsidy. The subsidy can stimulate the carbon emission abatement, and the fixed cost has a negative impact on the will of the carbon emission abatement for the enterprises. Besides, the low-carbon preference of the consumers has a positive impact on the carbon emission abatement under the subsidy of low-carbon technology. Furthermore, the government under takes the main costs of the low-carbon technology under the subsidy of low-carbon technology. The environmental benefit also has a positive impact on the subsidy and profits of the government and the profits of the supply chain under the recycling subsidy. Both kinds of subsidy strategies can achieve supply chain coordination.

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