Global inequality in built-up land per capita and its change trajectories between 1985 and 2020  

作　　者：Jasper van Vliet Hang Yang Vita Bakker Mengmeng Li 

机构地区：[1]Institute for Environmental studies,Vrije Universiteit Amsterdam,De Boelelaan 1111,1081 HV Amsterdam,the Netherlands [2]School of Environmental and Geographical Sciences,Shanghai Normal University,Shanghai 200234,China

出　　处：《Geography and Sustainability》2024年第4期541-547,共7页地理学与可持续性（英文）

基　　金：supported by the Netherlands Organization for Scientific Research NWO in the form of a VIDI grant(Grant No.VI.Vidi.198.008).

摘　　要：Built-up land has increased rapidly in recent decades,thus aggravating the competition for land between multiple uses.The increase in urban land can be decomposed into changes in population and changes in built-up land per person.Yet,it is unclear how this decomposition differs by country and how this decomposition changes over time.Moreover,we don’t know whether these changes affect the inequality in built-up land per capita.Here,we analyze the global distribution of built-up land per capita in the year 2020,as well as the changes therein between 1985 and 2020.We find that built-up land per capita in 2020 differs by an order of magnitude between countries,ranging from 15 m^(2) per person in Ethiopia to 734 m^(2) per person in Australia.Moreover,we find a wide range of different change trajectories,including both increases and decreases in built-up land per capita and in total population.As the total area of urban land increased in all countries,decreases in urban land consumption reflect a situation where the population increases faster than the total amount of urban land.We also find a large inequality in urban land consumption across countries,as indicated by a Gini index of 0.47 in 1985,decreasing only slightly to 0.45 in 2020.These findings suggest the need for a regionally differentiated approach to reduce urban land take,focusing first on mitigating further increases in those countries that already have a high urban land consumption.

关 键 词：Urban expansion Human settlements INEQUALITY Urban densification SDG 11 Sustainable development 

分 类 号：F299.1[经济管理—国民经济]