Urban agglomeration living space construction time identification method

Abstract

The invention relates to an urban agglomeration living space construction time identification method, which comprises the steps of collecting Landsat5 / 7 / 8 data through a google earth engine platform, and calculating time sequence data of three indexes, namely, NDVI, MNDWI and SWIR; obtaining urban residential land boundary vector data through map data and crawler analysis, and carrying out data analysis and space connection in Arcgis; classifying and identifying the residential land before and after a specific time point through a random forest classification method; and identifying the construction time of the residential land in a specific time period year through a time sequence segmentation method to complete the identification of the construction time of the whole residential land. According to the method, the construction time of the urban residential land is identified by fusing the spectrum and texture information of the remote sensing data and the social perception data, so that the problems of a semantic gap and a time gap existing in the two data are solved, and scientific and technical means support is provided for researching horizontal and vertical expansion and space-time evolution of the urban residential land.

Description

technical field [0001] The invention relates to the field of identification of the built-up time of residential spaces, in particular to a method for identifying the built-up time of residential spaces in urban agglomerations. Background technique [0002] With the continuous acceleration of the global urbanization process, the United Nations "2018 World Urbanization Prospects" pointed out that by 2050, the total global urban population will increase by 2.5 billion, accounting for 66% of the world's total population, of which China's total urban population will increase 255 million, when China's urbanization rate will be close to 80%. In the rapid development stage of urbanization, with the rapid development of the economy, the rapid growth of population and the rapid expansion of cities will lead to the disorderly growth of urban residential land, and intensify the contradiction between urban construction land and ecological land. Timely monitoring of the spatio-temporal d...

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Problems solved by technology

[0005] The purpose of this invention is to address the current lack of spatial-temporal dynamic research on urban residential land, there are "semantic gaps" and "time gaps" between remote sensing data and social perception data, and the current research lacks research on "time gaps" and other issues , a method for identifying the built-up time of residential space in urban agglomerations is proposed, which identifies the built-up time of urban residential land by fusing the spectral and texture information of remote sensing data and the socioeconomic characteristics of social perception data

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