Spatio-Temporal Evolution of Ecological Sensitivity in the Desert of China from 1981 to 2022

The northern desert of China plays an important strategic role in land resource security and national economic development. Research on the spatio-temporal changes ecological sensitivity can provide a scientific reference for management restoration arid semi-arid areas China. This paper takes as research area, uses spatial distance model to build comprehensive evaluation index system, discusses evolution characteristics area from 1981 2022. results show following: (1) use types are mainly sandy land, grassland other lands. changing lands 74,353.14 km2 50,807.97 km2, which is factor affecting (2) Five aspects, including terrain, climate, hydrology, soil vegetation, influence restrict each other, jointly create background conditions distribution change Climate terrain most influencing factors Vegetation active basic Hydrology have certain limiting effect (3) heterogeneity significant, showing high volatility west, low central region east. (4) For nearly 42 years, shows first increasing then decreasing characteristics. fluctuation reduction zone accounts 26.34% total extreme mild varies by 11.84% 65.28%, respectively. (5) aggregation changed significantly, high–high low–low agglomeration has also been decreasing, indicating that environment obviously improving. In future, we should pay attention efficient natural resources strengthen protection all kinds achieve sustainable development regional environment.