Industrial Structure Transformation and Layout Optimization of Beijing-Tianjin-Hebei Region under Carbon Emission Constraints

Abstract

To address the issue of global warming, there is a trend towards low-carbon economies in world economic development. China’s rapid economic growth and high carbon energy structure contribute to its large carbon emissions. To achieve sustainable development, China must transform its industrial structure to conserve energy, reduce emissions, and adapt to climate change. This study measured the carbon entropy and carbon emission efficiency of 25 industries in the Beijing-Tianjin-Hebei region from 2000 to 2015 by building carbon entropy models and total factor industrial carbon emission efficiency evaluation models. The study showed that: (a) Priority development industries in the Beijing-Tianjin-Hebei region were expanding, the regional competitiveness of the moderate development industry was improving, and the proportion of restricted development industries had dropped significantly; (b) the spatial distribution of the three types of industries presented a pattern of concentric rings, with priority industries at the core, surrounded by moderate, then by restricted development industries; (c) the status of medium- and high-efficiency industries had improved, while the status of low-efficiency industries had decreased. Spatially, high- and low-efficiency industries were becoming concentrated, and medium-efficiency industries were becoming dispersed; (d) considering carbon entropy and carbon emission efficiency, the path of industrial structure transformation and upgrading and layout optimization in Beijing-Tianjin-Hebei region was proposed.

The Impact of Rationalization and Upgrading of Industrial Structure on Carbon Emissions in the Beijing-Tianjin-Hebei Urban Agglomeration

“…The focus is on reducing high-carbon energy consumption and CO 2 emissions. As the essential industrial bases, Beijing, Tianjin and Hebei have carried out extensive and in-depth studies on energy consumption and carbon emissions in this region using the factor decomposition method, index decomposition method and input-output method [13][14][15]. Xue et al, (2021) used the EBM model of unexpected output to measure the city-level carbon emission efficiency of the Beijing-Tianjin-Hebei region from 2007 to 2016 [16]; Chang et al, (2020) estimated the carbon emissions of Bohai Rim from 2005 to 2017, and evaluated the impact of energy consumption structure on carbon emission performance in the region [17]; Bai et al, (2021) concluded that driving force shows that due to the economic transformation of the measurement, emission intensity and production structure dramatically reduces the amount of the Beijing-Tianjin-Hebei region [18]; Wang et al, (2021) developed a multi-scenario factorial analysis and multi-regional input-output model, and multiple scenarios based on direct CO 2 reduction and final demand mitigation on various industries are examined [19].…”

“…It plays an essential pivotal role in the national economy and transportation maps [18]. At the same time, Beijing-Tianjin-Hebei is also a heavy industry base of metallurgy, chemical industry, building materials, automobile manufacturing, machinery manufacturing and other industries with high energy consumption and high pollution [15]. Since 2013, the Beijing-Tianjin-Hebei region has suffered from an extensive and prolonged haze, with PM 2.5 levels exceeding the standard for a long time, making it a central disaster area for air pollution.…”

Recent progress on van der Waals heterojunctions applied in photocatalysis

“…When the incident light energy (hv) is not less than the forbidden band width (E g ), the electrons (e À ) in the valence band absorption incoming photons transition to the conduction band, leaving the corresponding holes (h + ) on the valence band. (2) The generated e À and h + migrate to the surface of the semiconductor, respectively, under the action of the electric eld or diffusion. Meanwhile, some photogenerated e À and h + recombine during the migration process.…”

“…Energy consumption and environmental pollution are becoming more and more prominent, and the realization of sustainable development is becoming a common choice for the development of countries all over the world. 1,2 The semiconductor photocatalysis technology based on the chemical conversion and storage of solar energy provides us with a relatively ideal new idea to reduce carbon dioxide emissions, energy utilization and pollution control. 3 Therefore, photocatalytic CO 2 reduction, H 2 O decomposition and pollutant degradation reductions have received continuous attention and extensive research.…”

A Comparative Study of the Effect of Different Carbon-Reduction Policies on Outsourcing Remanufacturing

“…When the upper limit of carbon emissions is relatively low, the impact of the production cost’s increase on price is lower than that of production increase, so the unit retail price under the carbon-emission-constraint policy is higher. When the upper limit of carbon emissions is above that threshold, it causes a little restriction on the production of the two manufacturers [ 61 ]. As a result, under the carbon-trade policy, the increase in production cost has a higher impact on the price than the increase in output, so the unit retail price under the carbon-emission-constraint policy is lower.…”