Abstract: The change rule and spatial-temporal differentiation of landscape ecological security pattern in arid areas of Xinjiang Uygur Autonomous Region were discussed.Based on the spatial perspective of production-life-ecological space,taking the land use data change database as the data source, the landscape pattern index was selected to build the landscape ecological security evaluation model, and the spatial statistical analysis method was used to analyze the spatial and temporal variation characteristics of landscape ecological security in the study area in recent 40 years. The results showed that the grassland ecological space and other ecological space were dominant landscape types in Xinjiang, accounting for about 89% of the total area. The production space was increasing, the ecological space was decreasing, and the change range of living space was not obvious. The ecological security and relatively safe areas in the study area were mainly distributed in the oasis agricultural area, and the unsafe and relatively unsafe areas were mainly distributed in the hinterland of Taklimakan desert, Turpan basin desert and Gurbantonggut desert. The basic safe area, safe area and relatively safe area were gradually shrinking, while the unsafe area and relatively unsafe area were expanding year by year, and the ecological security in the study area was deteriorating. During the study period, the landscape ecological security in the study area had a positive correlation in space, and the spatial distribution had the characteristics of agglomeration. The overall spatial autocorrelation level showed a significant upward trend, and high-high and low-low clustering phenomena existed in local spatial autocorrelation. Therefore, for the future ecological construction and sustainable development of Xinjiang Uygur Autonomous Region, it is necessary to optimize the layout of various types of land use, control the orderly expansion of urban living land, improve the stability and anti-interference of ecological land, and promote the coordinated development of ecological security of production-life-ecological space.

Key words: production-life-ecological space, landscape ecological security, land use evolution, Xinjiang Uygur Autonomous Region