Abstract

For greenhouse gas (GHG) emissions by Beijing economy 2007, a concrete emission inventory covering carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) is presented and associated with an input-output analysis to reveal the local GHG embodiment in final demand and trade without regard to imported emissions. The total direct GHG emissions amount to 1.06E + 08 t CO2-eq, of which energy-related CO2 emissions comprise 90.49%, non-energy-related CO2 emissions 6.35%, CH4 emissions 2.33%, and N2O emissions 0.83%, respectively. In terms of energy-related CO2 emissions, the largest source is coal with a percentage of 53.08%, followed by coke with 10.75% and kerosene with 8.44%. Sector 26 (Construction Industry) holds the top local emissions embodied in final demand of 1.86E + 07 t CO2-eq due to its considerable capital, followed by energy-intensive Sectors 27 (Transport and Storage) and 14 (Smelting and Pressing of Ferrous and Nonferrous Metals). The GHG emissions embodied in Beijing's exports are 4.90E + 07 t CO2-eq, accounting for 46.01% of the total emissions embodied in final demand. The sound scientific database totally based on local emissions is an important basis to make effective environment and energy policies for local decision makers.

Highlights

  • The success of reducing greenhouse gas (GHG) emissions depends greatly on the policies making at urban, domestic and international scales [1]

  • This paper focuses on local energy inputs and GHG emissions in urban regions to guide environment and energy policies making at the substate level

  • Many efforts have been made to calculate environmental emissions at the urban scale [1, 6,7,8], but most of them about urban carbon emissions just focus on the end-use emissions originated from industrial process, transportation, waste treatment, and so on [9,10,11,12,13], ignoring a deeper understanding of the total emissions in terms of both direct and indirect emissions caused by local commodities’ production processes

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Summary

Introduction

The success of reducing GHG emissions depends greatly on the policies making at urban, domestic and international scales [1]. Urban planning should consider GHG emissions embodied in commodities used as intermediate inputs to produce products or commodities consumed in cities, not just these obvious direct GHG emissions [5, 14] To track both direct and indirect effects on embodiments for economies as socioecological systems, input-output analysis (IOA) [15,16,17,18] has been applied to analyze embodied GHG emissions [5, 8, 14], energy [19, 20], water resources [21,22,23], and so forth at urban, domestic, and international scales.

Methodology and Data
Textile Industry
36 Polytechnic Services
Direct Emissions
Embodied Emissions
Concluding Remarks

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