天山北坡城市群国土空间格局识别与时空变化分析OACSTPCD

Under the context of climate change and human activities,it is important to explore the character-istics and patterns of land-space pattern evolution in order to further alleviate the human-land conflict in oasis areas.Taking the urban agglomerate along the north slope of the Tianshan Mountain as an example,the three phases of land use data and DEM data in 2000,2010 and 2020 were selected to analyze the quanti-ty and spatial distribution of the territorial spatial structure of the agglomerate based on the spatial theory of production-living-ecological space.The results showed that 1)the area of the three spatial types of the agglomerate increased or decreased with varying degrees over the past 20 years.The greatest number of out-transited amount were found in watershed and woodland ecological spaces,and the greatest number of transform rate were found between both pasture and other ecological spaces.2)The study area showed an increasing trend year by year,except for Fukang City,Mubi Kazakh Autonomous County,Qitai County,Shihezi City and Urumqi City,where the composite index of spatial use of national land showed a small in-crease and decrease trend.3)The zones with high nuclear density in the production space was in the stripped shape along south-east to north-west direction.Contiguous areas distributed in the central part of the study area,while areas of high core density of ecological space distributed in the periphery of the study area.The high value nuclear density areas of living space distributed in a punctuated pattern centered on the city of Urumqi.Many fragmented median points were derived from the surrounding area,with a frag-mented overall distribution and low spatial connectivity.