Spatial Distribution and Ten Years Change of Global Built-up Areas Derived from GlobeLand30

doi:10.11947/j.AGCS.2015.20140677

Abstract

Abstract: As an important anthropogenic indicator and human ecological foot print,built-up areas and its change is an essential information for environmental change analysis, geo-conditional monitoring and sustainable development. In the past, built-up areas and its change studies were mainly focused on a city, regional or nation scale, and it has not been possible to conduct a global built-up areas and its change analysis yet. This paper presented the methodology and results of the first global analysis of built-up areas and its ten year's change(2000-2010) using GlobeLand30, China's 30 meter resolution global land cover data sets-. Built-up areas, change rate and increase proportion were the major statistical variables used for the statistical analysis. The result shows that the total area of the global built-up areas is 1.1875 million km², covering 0.88% of the total area of the global land surface; the area of global built-up areas increased 57400km² with the variation rate of 5.08% from 2000 to 2010;and China and United Sates are the top two countries having the largest increased built-up areas, i.e., accounting over 50% of that of the global total; 50.26% of the total increased built-up areas comes from the arable land. These results provide reliable spatio-temporal information to the study of human domination of Earth's ecosystems and global monitoring.

Key words: GlobeLand30, global land cover, built-up areas, spatial distribution, temporal change, statistical analysis

CLC Number:

P237

CHEN Jun, CHEN Lijun, LI Ran, LIAO Anping, PENG Shu, LU Nan, ZHANG Yushuo. Spatial Distribution and Ten Years Change of Global Built-up Areas Derived from GlobeLand30[J]. Acta Geodaetica et Cartographica Sinica, 2015, 44(11): 1181-1188.

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