Spatio-temporal evolution and spatial correlation of carbon emissions in Guiyang City based on land use change

doi:10.14088/j.cnki.issn0439-8114.2023.05.003

Abstract

Abstract: Taking Guiyang City as an example, based on the 30 m land cover remote sensing data from 2000 to 2020, the land use transfer matrix, carbon emission calculation model and spatial auto-correlation were used to analyze the spatio-temporal evolution and spatial correlation of land use types and carbon emissions in Guiyang City, to provide reference for the realization of regional “dual carbon” goal and the development of the green and low-carbon economic model. The results showed that from 2000 to 2020, the total carbon emission of land use in Guiyang City had a rapid growth rate on the whole, and the carbon source showed an increasing trend. The carbon source mainly consisted of construction land, and the carbon sink mainly consisted of forest land with only slight fluctuation. In terms of the spatial differences of carbon emissions from 2000 to 2020, the heavy carbon emission areas were mainly concentrated in Yunyan District and Nanming District, and showed a westward expansion trend; the moderate carbon emission areas were mainly concentrated in the southwest and northeast wings of Guiyang City, and showed a northeast shift trend. In terms of spatial correlation, the carbon emission of land use in Guiyang City showed a positive spatial correlation in 2000, and a negative spatial correlation with increasing correlation from 2005 to 2020. The pattern of land use carbon emission in Guiyang City was not optimistic, and the structure and intensity of land use were in urgent need of adjustment. Therefore, feasible low-carbon emission reduction policies should be formulated according to the actual situation of Guiyang City to promote the low-carbon, efficient and sustainable utilization of regional land resources.

Key words: land use, carbon emissions, spatio-temporal evolution, spatial correlation, Guiyang City

CLC Number:

F301.21

ZHOU Wei-ting. Spatio-temporal evolution and spatial correlation of carbon emissions in Guiyang City based on land use change[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(5): 8-13.

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