四川师范大学学报（自然科学版）2025，Vol.48Issue(6)：783-793,11.DOI:10.3969/j.issn.1001-8395.2025.06.007
土地利用变化视角下的四川盆地景观生态风险时空动态与归因分析
Spatio-temporal Dynamics and Attribution of Ecological Risks for Landscapes in Sichuan Basin from the Perspective of Land Use Change
摘要
Abstract
Studying the spatio-temporal dynamics and attribution of ecological risks for landscape is important for optimizing the ec-ological security pattern and maintaining the stability of ecosystems.Based on the land use perspective and the theory of landscape ecol-ogy,we constructed a ecological risk index for landscapes,calculated the contribution rate of land transfer,combined the semi-variance function,spatial autocorrelation analysis and other methods to explore the spatial and temporal dynamics of ecological risks for land-scapes in the Sichuan Basin over the past 20 years,and used the spatial econometrics model to analyze the attribution.The results show that:1)The land use types in the Sichuan Basin from 2000 to 2020 were strongly transformed,and the landscape pattern changed sig-nificantly.During the period,the land use structure is dominated by cultivated land and forest land,and the transformation of cultivat-ed land to construction land and forest land is stronger,and the changes in the area of the used landscape for each land and the number of patches lead to obvious changes in the corresponding landscape pattern index.2)The overall trend of ecological risks for landscapes in the Sichuan Basin is decreasing,and its spatial distribution pattern basically remains unchanged.The conversion of the risk area is dominated by edge expansion and contraction,and the agglomeration of the risk area declines,showing a trend of gradual dispersion.3)The ecological risk value for landscapes of the study area is influenced by both natural and socio-economic factors.The distance from the river and vegetation cover in the natural factors have a significant negative influence,where the GDP and temperature in the socio-economic factors influenced by both nature and society show a significant positive influence.The results of the study can provide some references for the rational utilization of land resources and the prevention and control of ecological risks for landscapes in the Si-chuan Basin.关键词
土地利用变化/景观生态风险/景观格局指数/空间计量模型/四川盆地Key words
land use change/landscape ecological risk/landscape pattern index/spatial econometric modeling/Sichuan Basin分类
管理科学引用本文复制引用
李世强,张伟..土地利用变化视角下的四川盆地景观生态风险时空动态与归因分析[J].四川师范大学学报（自然科学版）,2025,48(6):783-793,11.基金项目
教育部人文社科规划项目(18XJA630005) （18XJA630005）
