Vehicle Emission Changes in China under Different Control Measures over Past Two Decades
نویسندگان
چکیده
Vehicle emissions have become a significant source of air pollution in urban cities, especially China. Mobile sources account for 45% local fine particle the Chinese capital Beijing. The Beijing–Tianjin–Hebei (BTH) area, one China’s most representative clusters, is suffering from severe pollution. With rapid growth vehicle ownership past two decades, China also undergone great changes under various management measures. BTH region place where mobile emission was carried out earlier. It important research value to understand evolution trend ownerships and actual effects measures control emissions. Due imperfect evaluation current limitation 2000 2019, inventory established, major were evaluated. Results showed that has been increasing year by over 20 years, 2.39 million 25.32 with an average annual rate 13.24%. However, pollutants discharged motor vehicles first rising then falling due except CO2. unsynchronized resulted huge differences trends among Beijing, Tianjin Hebei. carbon monoxide (CO), volatile organic compounds (VOCs), nitrogen oxides (NOX), particulate matter (PM10) Beijing decreasing. these similar those but there secondary increase NOX PM10 later period. discharge all Hebei Province growing sulfur dioxide (SO2). CO VOCs PCs, contribution PCs VOCs, reached 86.0–89.6% 2019. Heavy-duty trucks (HDTs) buses main emissions, contributing 78.2–85.4% Eliminating high best measure Region, which had good reduction effect on pollutants. For sustainable development region, it suggested province implement policies simultaneously establish joint mechanism.
منابع مشابه
Changes in Earth's reflectance over the past two decades.
We correlate an overlapping period of earthshine measurements of Earth's reflectance (from 1999 through mid-2001) with satellite observations of global cloud properties to construct from the latter a proxy measure of Earth's global shortwave reflectance. This proxy shows a steady decrease in Earth's reflectance from 1984 to 2000, with a strong climatologically significant drop after 1995. From ...
متن کاملBreast cancer in the Arctic – changes over the past decades
The purpose of this study is to review the current literatures on breast cancer (BC) in the Arctic, especially the trends in incidence during the last decades and the possible explanations. The design of this study is a literature review. The scientific literature concerning BC were reviewed, especially focusing on the Arctic and the special conditions that exist in this region. Breast cancer i...
متن کاملChildhood leprosy in India over the past two decades.
OBJECTIVES Clinico-epidemiological pattern of childhood leprosy in India over the past two decades were analysed from the Indian studies conducted during the years 1990-2009. RESULTS Twelve studies on childhood leprosy were included. Ten were conducted in health institutions and one was a community-based survey. Voluntary reporting was the principal method of case detection; community survey ...
متن کاملChanges in the rates of awareness, treatment and control of hypertension in Canada over the past two decades.
BACKGROUND Analyses of medication databases indicate marked increases in prescribing of antihypertensive drugs in Canada over the past decade. This study was done to examine the trends in the prevalence of hypertension and in control rates in Canada between 1992 and 2009. METHODS Three population-based surveys, the 1986-1992 Canadian Heart Health Surveys, the 2006 Ontario Survey on the Preval...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Sustainability
سال: 2022
ISSN: ['2071-1050']
DOI: https://doi.org/10.3390/su142416367