scholarly journals Spatial Correlation of Air Pollution and Its Causes in Northeast China

2021 ◽  
Vol 18 (20) ◽  
pp. 10619
Author(s):  
Mingze Du ◽  
Weijiang Liu ◽  
Yizhe Hao
Keyword(s):  
Air Pollution ◽  
Northeast China ◽  
Spatial Association ◽  
Pollution Prevention ◽  
Northeastern China ◽  
Control Measures ◽  
Liaoning Province ◽  
Pollution Problem ◽  
The Status ◽  
Respirable Particulate

To understand the status of air pollution in northeastern China, we explore the structure of air pollution transmission networks and propose targeted policy recommendations. Using air pollution data from 35 cities in northeastern China for a total of 879 periods from 6 January 2015 to 3 June 2017, this paper used social network analysis (SNA) to construct a spatial association network of air pollution in the region, and analyzed the spatial association of air pollution among cities and its causes in an attempt to reveal the transmission path of air pollution in the region. The results show that inter-city air pollution in northeast China forms a complex and stable correlation network with obvious seasonal differences of “high in winter and low in summer”. Different cities in the region play the roles of “spillover”, “intermediary” and “receiver” of air pollution in the network. Small respirable particulate (PM2.5) pollution constitutes a significant component of air pollution in northeast China, which spreads from Liaoning province to Heilongjiang province via Jilin province. Therefore, regional joint pollution prevention and control measures should be adopted to combat the air pollution problem, and different treatment measures should be developed for different city “roles” in the pollution network, in order to fundamentally solve the air pollution problem in the region.

The Message of “APEC Blue” for the Prevention and Control of Urban Air Pollution in China

2016 ◽  
Vol 04 (04) ◽  
pp. 1650027
Author(s):  
Rong ZHU
Keyword(s):  
Air Pollution ◽  
Emergency Response ◽  
Prevention And Control ◽  
Urban Air Pollution ◽  
Pollution Prevention ◽  
Warning System ◽  
Weather Conditions ◽  
Control Measures ◽  
Atmospheric Pollutant ◽  
And Control

Analysis of the meteorological conditions for atmospheric pollutant dispersion before and after the 2014 APEC meeting shows very significant effects of air pollution prevention and control measures on the meeting. It proves that the proper measures to control air pollution in the Beijing-Tianjin-Hebei Region are: establishing a regional emergency response mechanism to reduce emissions in the case of heavy air pollution, strengthening the local emergency response measures for emission reduction, and enhancing the early warning system for weather conditions conducive to heavy air pollution.

scholarly journals Guidelines for the design, installation and operation of incinerators

1995 ◽  
Vol 9 (3) ◽  
Author(s):  
G.P Slabber ◽  
W.A Potgieter
Keyword(s):  
Air Pollution ◽  
Pollution Prevention ◽  
Local Authorities ◽  
Pollution Problem ◽  
Prevention Act ◽  
Dioxins And Furans ◽  
Incineration Process ◽  
Halogen Content ◽  
The Moment ◽  
Waste Destruction

Incineration of hazardous and medical (clinical) waste crepates an air pollution problem which s at the moment controlled in terms of the Atmospheric Pollution Prevention Act of 1965. It is exercised by officials from local authorities in accordance with part 3 of the Act and is very specialized. Consequently, officials from local authorities are not always trained to do this, especially at the smaller municipalities. Therefore, this function is dealt with in the wrong manner, or not dealt with at all. Incinirators are to be classified into three categories, namely incinirators where the refuse that is being burnt is also used as fuel or as supplementary fuel, incinerators which are not used for medical and hazardous waste destruction. If halogens like chlorine are present in teh waste, then there is a difinite possibility that dioxins and furans will be emitted during the incineration process. With a halogen content of more than 1% in the waste a minimum tempature of 1100 degree celsius for 2 senconds at the inner wall of the secondary chamber is imperative. For cytotoxic waste teh temperature must be at least 1000 degree celsius.

scholarly journals Visit to Museums of North-East China

2020 ◽  
Vol 19 (4) ◽  
pp. 159-167
Author(s):  
Elena E. Voytishek ◽  
Sergey A. Komissarov ◽  
Aleksandr I. Soloviev
Keyword(s):  
Cultural Heritage ◽  
Inner Mongolia ◽  
Northeast China ◽  
Liaoning Province ◽  
State University ◽  
Historical Materials ◽  
Historical Museums ◽  
North East ◽  
The Status ◽  
Oriental Studies

The review contains information about the performances of employees of the Department of Oriental Studies of the Institute for Humanities of Novosibirsk State University and the Institute of Archeology and Ethnography of the SB RAS at international conferences, during which they also visited several important historical museums in northeast China. The review also touches on the famous Lamaist complexes of Inner Mongolia – Dalelinsi and Wudanzhao, the Hamin Archaeological Park with Neolithic burials, the Museum of Inner Mongolia in Baotou with its ethnographic collections, archaeological and historical materials from the Neolithic and Han eras to the New Age, as well as the Dafu Private Museum in Chaoyang (Liaoning Province), where the main local cultures of the Neolithic and Paleometal era are represented, many of which have been given the status of national Cultural Heritage of various levels.

scholarly journals Air Pollution in a Low-Industry City in China’s Silk Road Economic Belt: Characteristics and Potential Sources

2021 ◽  
Vol 9 ◽  
Author(s):  
Fanglong Wang ◽  
Zhongqin Li ◽  
Feiteng Wang ◽  
Xiaoni You ◽  
Dunsheng Xia ◽  
...  
Keyword(s):  
Air Pollution ◽  
Pollution Prevention ◽  
Silk Road ◽  
Control Measures ◽  
Shaanxi Province ◽  
Source Contributions ◽  
Wind Potential ◽  
Silk Road Economic Belt ◽  
The Government ◽  
Prevention And Control Measures

In this study, air pollutants were analyzed at a low-industry city on the Silk Road Economic Belt of Northwestern China from 2015 to 2018. The results show that SO2 and CO had a decreasing trend and NO2, O3, PM2.5, and PM10 had an increasing trend during the study period. The primary characteristic pollutants were PM2.5 and PM10, which were higher than China’s Grade II standard. SO2, NO2, CO, PM2.5, and PM10 concentrations showed similar seasonal variation patterns: the highest pollutant concentration was in winter and the lowest in summer. Those pollutants showed a similar diurnal pattern with two peaks, one at 7:00 to 9:00 and another at 21:00 to 22:00. However, O3 concentration was highest in summer and lowest in winter, with a unimodal diurnal variation pattern. The annual average pollution concentrations in Tianshui in 2017 were substantially lower than the concentrations reported by most cities in China. By examining the meteorological conditions at a daily scale, we found that Tianshui was highly influenced by local emissions and a southwest wind. Potential source contributions and concentration weighted trajectory analyses indicated that the pollution from Gansu, Sichuan, Qinghai, and Shaanxi Province could affect the pollution concentration in Tianshui. The results provide directions for the government to take in formulating regional air pollution prevention and control measures and to improve air quality.

STATISTICAL METHODS FOR THE ASSESSMENT OF AIR POLLUTION OF JHANSI CITY, UTTAR PRADESH, INDIA

2018 ◽  
Vol 24 (1) ◽  
Author(s):  
V. S. CHAUHAN ◽  
BHANUMATI SINGH ◽  
SHREE GANESH ◽  
JAMSHED ZAIDI
Keyword(s):  
Air Pollution ◽  
Uttar Pradesh ◽  
Ambient Air ◽  
Ambient Air Pollution ◽  
Base Line ◽  
Multivariate Statistical ◽  
Large Cities ◽  
Governmental Organizations ◽  
Non Governmental Organizations ◽  
The Status

Studies on air pollution in large cities of India showed that ambient air pollution concentrations are at such levels where serious health effects are possible. This paper presents overview on the status of air quality index (AQI) of Jhansi city by using multivariate statistical techniques. This base line data can help governmental and non-governmental organizations for the management of air pollution.

scholarly journals Environmental Regulation and Exports: Evidence from the Comprehensive Air Pollution Policy in China

2021 ◽  
Vol 18 (3) ◽  
pp. 1316 ◽  
Author(s):  
Hong Chen ◽  
Yang Xu
Keyword(s):  
Air Pollution ◽  
Environmental Regulation ◽  
Pollution Prevention ◽  
Firm Entry ◽  
Entry And Exit ◽  
Control Plan ◽  
Heterogeneous Effects ◽  
The Impact ◽  
The City ◽  
Firm Entry And Exit

The impact of environmental regulation has been an important topic. Based on the Chinese Custom Database and China City Statistical Yearbook, this paper investigates the effect of environmental regulation on export values and explores potential mechanisms and heterogeneous effects. Taking advantage of China’s first comprehensive air pollution prevention and control plan, the Air Pollution Control in Key Zones policy, as a quasi-natural experiment, we employ the difference-in-differences method to examine the causal relationship between environmental regulation and exports. We find the statistically significant and negative effect of environmental regulation on exports at the city level. Moreover, we find that the potential mechanism is the change in export values caused by firm entry and exit, especially by exiters, rather than the change in the number of exporting firms in the city caused by firm entry and exit. In addition, we find the heterogeneous effects of environmental regulation based on the differences of environmental policy across cities and the Broad Economic Categories classification.

scholarly journals Assessment of Emission Reduction and Meteorological Change in PM2.5 and Transport Flux in Typical Cities Cluster during 2013–2017

2021 ◽  
Vol 13 (10) ◽  
pp. 5685
Author(s):  
Panbo Guan ◽  
Hanyu Zhang ◽  
Zhida Zhang ◽  
Haoyuan Chen ◽  
Weichao Bai ◽  
...  
Keyword(s):  
Air Quality ◽  
Action Plan ◽  
Influence Factors ◽  
Pollution Prevention ◽  
Weather Conditions ◽  
Yangtze River Delta ◽  
Control Measures ◽  
Joint Control ◽  
Air Quality Model ◽  
Quality Model

Under the Air Pollution Prevention and Control Action Plan (APPCAP) implemented, China has witnessed an air quality change during the past five years, yet the main influence factors remain relatively unexplored. Taking the Beijing-Tianjin-Hebei (BTH) and Yangtze River Delta (YRD) regions as typical cluster cities, the Weather Research Forecasting (WRF) and Comprehensive Air Quality Model with Extension (CAMx) were introduced to demonstrate the meteorological and emission contribution and PM2.5 flux distribution. The results showed that the PM2.5 concentration in BTH and YRD significantly declined with a descend ratio of −39.6% and −28.1%, respectively. For the meteorological contribution, those regions had a similar tendency with unfavorable conditions in 2013–2015 (contribution concentration 1.6–3.8 μg/m3 and 1.1–3.6 μg/m3) and favorable in 2016 (contribution concentration −1.5 μg/m3 and −0.2 μg/m3). Further, the absolute value of the net flux’s intensity was positively correlated with the degree of the favorable/unfavorable weather conditions. When it came to emission intensity, the total net inflow flux increased, and the outflow flux decreased significantly across the border with the emission increasing. In short: the aforementioned results confirmed the effectiveness of the regional joint emission control and provided scientific support for the proposed effective joint control measures.

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