Journal of Hunan Ecological Science

【Objective】Scientific assessment of the regional landscape ecological risk is of great sig- nificance for optimizing the allocation of land resources. 【Method】Based on the land use data in 2000, 2010 and 2020, the landscape ecological risk model was constructed to evaluate the landscape ecological risk of the three northern counties of Langfang City under the change of land use. 【Result】(1) From 2000 to 2020, cultivated land and construction land were the main landscapes in the three northern coun- ties of Langfang City, and the sum of the two accounted for more than 95% of the total land use. During the study period, the area of cultivated land decreased by 23. 01% , and the construction land increased by 104. 57% . (2) From 2000 to 2020, the landscape ecological risk of the three northern counties of Langfang City showed an upward trend. The proportion of low-risk areas and lower-risk areas decreased from 71. 61% in 2010 to 30. 85% in 2020, and the proportion of high-risk areas and higher-risk areas in- creased from 9. 58% in 2000 to 35. 61% in 2020. (3) Three periods of landscape ecological risk in the three northen counties of Langfang City from 2000 to 2020 showed a positive spatial autocorrelation, mainly in the ‘ low-low’ and ‘ high-high’ aggregation modes. 【Conclusion】According to the spatial differences of ecological risks, the three northen counties of Langfang City should pay attention to the classification of policies and promote the win-win situation of economic, social and ecological environment protection in the region.

peripheral areas of metropolis; land use; landscape ecological risk; spatial autocorrela- tion