If all countries want to have environmental standard of the U.S. cities, we may need three earth planets!
In a scientific meeting about global economy and its impact on cities, Dr. Pourzarandi, the president of IUESA said although global economy experienced 3 percent growth in 2016, this amount was 2.1 for America, 2.6 in European countries, and 4 in developing countries that indicate slow growth, reduce in productivity rate, and downward inflation.
Studies indicate that 50 large cities in the world that are headquarters of the global economy have more than 9.6 trillion dollars GDP while the world top 10 cities manage 22 percent of the world economic activities, despite they only have 6.2 percent of the world population, Champion of CPI-MC and Global Advocator said.
Saying that Tokyo with 2 trillion dollars, New York metropolitan area – Philadelphia, Kobe metropolitan area - Osaka, Nagoya, Chicago and London are at the top of this list, he added they are counted as headquarters of global financial centers, banks, insurances, credit institutions, and central offices multinational companies.
Referring to the role of knowledge-based economy in economic development of cities, he further said even though cities were expected to lose credibility and their position slightly by starting global era, experience indicated that IT development and knowledge-based economy depend on cities more than anything else does. Looking at the ranking of different countries in the field of knowledge-based economy, we may consider that the richest ones are those that depend on knowledge-based economy.
Emphasizing on the environmental aspects of economic development in cities, he said cities are responsible for 80 percent of carbon dioxide in the world and environmental impacts of cities are evaluated by indicators including ecological footprint, carbon, and water footprint.
Saying that more than half of the world cities are exposed to environmental hazards such as storm, flood, droughts, earthquakes, landslides and volcanoes, he added studies indicate that the greatest ecological footprint is related to North American countries with 4.9 hectares for each person. If all countries want to have environmental standard of the U.S. cities, we may need three earth planets!
He further said each person requires 3.5 hectares in England to provide his need on average and this rate is 4 hectares land in Tehran Metropolis to meet citizens consumption demands that is equal to 389 times more than Tehran area.
Emphasizing that although climate change threatens all countries, developing countries are more vulnerable against this problem, he said it seems developing counties undergo 75 percent of losses and damages caused by climate change in order that 2 degrees warmer air will lead to reduce 4 to 5 percent of GDP in Africa and South Asia.