南京师范大学学报（工程技术版）2026，Vol.26Issue(3)：31-39,9.DOI:10.3969/j.issn.1672-1292.2026.03.004
四川省森林扰动时空演变及其与林鸟丰富度的空间关系
Spatiotemporal Evolution of Forest Disturbances and Its Spatial Association with Species Richness of Forest-Specialist Birds in Sichuan Province
摘要
Abstract
Habitat degradation triggered by forest disturbances poses a major threat to forest birds.Understanding the spatial impacts of forest disturbances on bird habitats is of great significance for regional biodiversity conservation.Based on long-term remote sensing imagery and global bird species distribution data,this study utilizes the LandTrendr algorithm to characterize the spatiotemporal dynamics of forest disturbances in Sichuan Province over the past 30 years.Combined with the Area of Habitat(AOH)method,the spatial pattern of species richness for 141 forest-specialist bird species across the province is evaluated.Furthermore,a bivariate spatial autocorrelation model is employed to explore the spatial relationship between forest disturbances and species diversity.The results indicate that:(1)Forest disturbances in Sichuan Province exhibits significant spatiotemporal heterogeneity.Undisturbed forests are primarily concentrated in the Western Sichuan Plateau,while significantly disturbed areas are clustered along the southwestern margin of the Sichuan Basin.The disturbance patterns have potentially shifted from widespread and fragmented human activities in the early period to more localized forest fires and geological disasters in recent years.(2)The species richness of forest-specialist birds exhibits an overall spatial pattern of"higher in the central-western region and lower in the eastern region."The potential habitats of forest-specialist birds are highly concentrated along the Zoige Wetland-Minshan Mountains-Qionglai Mountains-Daxue Mountains corridor,as well as in the Panxi region.(3)Forest disturbance intensity and forest-specialist bird species richness exhibits a highly significant positive spatial coupling effect(Global Moran's I=0.124).Local spatial analysis reveals distinct regional differentiation patterns,characterizes by"High-High"conflict zones along the southwestern margin of the Sichuan Basin and"Low-High"high-quality core habitats in the hinterland of the Liangshan Mountains.This study demonstrates that some forest bird habitats with high ecological conservation value in Sichuan Province are currently threatened by forest disturbances,and further highlights the important role of protected area systems in maintaining regional biodiversity.关键词
森林扰动/生物多样性/专性林鸟/空间自相关/四川省Key words
forest disturbances/biodiversity/forest-specialist birds/spatial autocorrelation/Sichuan Province分类
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项天羽,戴晓爱..四川省森林扰动时空演变及其与林鸟丰富度的空间关系[J].南京师范大学学报（工程技术版）,2026,26(3):31-39,9.基金项目
国家社会科学基金资助项目(24XGL026)、教育部基础学科拔尖学生培养计划2.0研究课题(20251001). （24XGL026）
