bet365 Play online games According to a latest study，Most cities in population of more than millions of global population show outward expansion instead of urban growth pattern。

The journal "Environmental Research Express" published by the British Institute of Physics Press has recently published a paper co -authored by Yale University and the World Resources Research Institute of the United States. ——The urban growth types of 478 cities with bet365 Play online games more than millions of people in cities "。The author conducted a cluster analysis of cities with a population of not less than 1 million based on remote sensing data (Cluster Analysis)，Summarize the two -dimensional and three -dimensional special sign of these cities。results show，The dominant form of the current global city growth is developing in the direction of "suburbs rather than skyscraper"，that is, expand from the city center to the suburbs rather than build a super high -rise building。

Specifically，Global city growth form can be divided into 5 types: First, stable type (32%)，That is, the extension of the outward Bet365 app download expansion can be ignored，Small increase to the upward，As North America、South America、European cities; the second is the external expansion (11%)，is the extension of the outward extension，Small increase to the upward，such as India、Africa cities; Third, expansion of sprouts (accounting for 46%)，That is the low level of initial urban development，Expansion outward amplitude medium，The increase in upward is very small，This form is found in all parts of the world; fourth is mature type (5%)，That is, the level of urban development is already high，The amplitude of the outward expansion can be ignored，Moderate amplitude to the upward，bet365 best casino games As Osaka, Japan、Paris, France, etc.; Fifth, the extension of the extension of the extension (6%)，is to expand outward at the same time and increase upward，As South Korea、UAE city。

Current，The growth form of an expansion city dominated in the world is usually considered unsustainable，Because of its high energy consumption、High maintenance requirements、Large area of ​​land use。Cities with relatively slow speeds in many speeds，Opportunities to promote sustainable development still exist。Richa Mahtta, a researcher at the School of Forestry and Environment of Yale University, believes，Look at it for a long time，bet365 best casino games Urban expansion may be unsustainable，But considering that the growth form of nearly half of the world's large cities belongs to the "expansion of sprouts"，So，The opportunity to shape the form of urban growth in the future is still huge。We must plan and design the city in advance，Avoid complete completion in the city，Then change its spatial form or perform related human behavior。（Wang Youran/Compilation）