Related Experiment Video
Updated: Jul 29, 2025
10:22
Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
Published on: September 7, 2019
8.3K
Spatial effects of air pollutants reduction on CO2 emissions
Hao Zhou1,2, Mingdong Jiang1, Yumeng Huang1
1College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China.
Summary
Reducing air pollutants through front reduction (FRAP) has local effects on CO2 emissions, while end-of-pipe treatment (EPAP) increases CO2 in surrounding regions. Provincial boundaries significantly influence these spatial spillover effects.
Area of Science:
- Environmental Science
- Economics
- Spatial Analysis
Background:
- Air pollutants and CO2 share common sources, linking their emission control.
- Regional economic development and air pollution control necessitate understanding cross-regional impacts.
- The heterogeneity of air pollutant reduction stages requires specific analysis of their effects on CO2 emissions.
Purpose of the Study:
- To investigate the impact of two air pollutant reduction stages (FRAP and EPAP) on CO2 emissions in China.
- To analyze the spatial spillover effects of FRAP and EPAP on CO2 emissions.
- To examine the influence of provincial administrative boundaries on these spatial spillover effects.
Main Methods:
- Spatial panel model utilizing data from 240 Chinese cities (2005-2016).
- Modified spatial weight matrices to differentiate intra-provincial and inter-provincial spillovers.
- Analysis of front reduction of air pollutants (FRAP) and end-of-pipe treatment of air pollutants (EPAP) impacts.
Main Results:
- FRAP primarily shows a local synergistic effect on CO2 emissions with insignificant spatial spillover.
- EPAP exhibits an antergic local effect and significant spatial spillover, increasing surrounding regions' CO2 emissions.
- Provincial boundaries weaken the spatial spillover effects of both FRAP and EPAP.
Conclusions:
- Intra-provincial spatial spillover effects on CO2 emissions are significant, particularly for EPAP.
- Inter-provincial spillover effects are not significant for nearby cities.
- Policy interventions for air pollution and CO2 control should consider administrative boundaries and the specific reduction stage employed.
Related Concept Videos
01:50Global Climate Change
24.6K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
24.6K
01:24External and Internal Respiration
4.2K
External respiration occurs in the lungs, and it is the first step in the journey of oxygen inside the body. When we inhale, oxygen enters our lungs and diffuses across the thin alveolar membrane. The alveoli are tiny, air-filled sacs that provide a vast surface area for gas exchange. Oxygen in the alveoli has a higher partial pressure (105 mmHg) than in the adjacent pulmonary capillaries (40 mmHg), establishing a pressure gradient. As a result, oxygen molecules move from the alveoli into the...
4.2K
01:19Carbon Dioxide Transport in the Blood
2.1K
Carbon dioxide (CO2) transport in the blood is critical to human physiology. On average, our body cells produce around 200 mL of CO2 per minute, precisely the quantity expelled by the lungs. This process involves the transportation of CO2 from the tissue cells to the lungs in three primary forms.
Forms of CO2 Transport
1. Dissolved in plasma: A small percentage (7-10%) of CO2 is transported and dissolved directly in the plasma.
2. Carbaminohemoglobin: Just over 20% of CO2 is chemically bound to...
Forms of CO2 Transport
1. Dissolved in plasma: A small percentage (7-10%) of CO2 is transported and dissolved directly in the plasma.
2. Carbaminohemoglobin: Just over 20% of CO2 is chemically bound to...
2.1K
01:23Sampling Plans
221
Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
221
01:31Chemical Factors Affecting Respiration Centers
1.2K
Chemical factors such as changing CO2, O2, and H+ levels in arterial blood play a critical role in influencing respiration depth and rates. These variations are detected by chemoreceptors—specialized sensors located in two primary body areas. Central chemoreceptors are found throughout the brain stem, including the ventrolateral medulla, while peripheral chemoreceptors are located in the aortic arch and carotid arteries.
CO2 has a potent influence on respiration and is strictly regulated....
CO2 has a potent influence on respiration and is strictly regulated....
1.2K
01:28Effects of Air-entrainment in Concrete
116
Air entrainment in concrete significantly enhances the material's durability, especially in environments subjected to freeze-thaw cycles. Introducing small air bubbles into the concrete mix acts as internal voids that accommodate the expansion of water when it freezes, thereby alleviating internal stress and preventing structural cracks. This function is crucial in climates with significant freezing and thawing, as it protects the concrete from repeated stresses that could lead to premature...
116