西北师范大学学报（自然科学版）2025，Vol.61Issue(4)：50-60,11.DOI:10.16783/j.cnki.nwnuz.2025.04.007
广西北部湾城市群生境质量时空演变特征研究
Study on the spatial and temporal evolution characteristics of habitat quality in Beibu Gulf urban agglomeration of Guangxi
摘要
Abstract
Based on the land use type data of the Beibu Gulf urban agglomeration in Guangxi for the years 2000,2010,and 2020,this study employs the InVEST model and ArcGIS software to quantitatively analyze and evaluate the spatiotemporal evolution characteristics of land use types and habitat quality in the study area over the 20-year period.The results show that:The land use types in the study area are mainly composed of cultivated land and forest land,which are distributed in concentrated contiguous patches in a clustered pattern.Due to the rapid expansion of the urban agglomeration,construction land has extensively encroached upon other land use types such as cultivated land,forest land,and grassland.From 2000 to 2020,the construction land increased by 937.5 km2,and the unused land increased by 5.3 km2;the areas of cultivated land,forest land,grassland,and water bodies decreased in sequence by 692.8 km2,116.8 km2,116.9 km2,and 16.4 km2,respectively.The average habitat quality index values in the study area for the years 2000,2010,and 2020 were 0.4539,0.4091,and 0.3930,respectively,with the majority of the regions being of poor and relatively poor habitat quality levels.The overall habitat quality condition is at a medium to poor level.During the 20-year period,the areas of poor,relatively poor,and medium-quality habitats in the study area increased by 7,269.1 km2,while the areas of good and excellent-quality habitats decreased due to conversion.From 2000 to 2020,the average value of the habitat quality index in the study area showed a change rate of-13.44％,indicating a continuous increase in the areas of poor,relatively poor,and medium-quality habitats,while the areas of good and excellent-quality habitats continued to decrease.During the 20-year period,the habitat degradation index showed a slight upward trend,and the overall habitat quality in the region exhibited a trend of small-scale continuous decline.The dynamic changes in habitat quality levels are closely related to factors such as the development and expansion of the urban agglomeration,population distribution,and the implementation of national strategic policies.关键词
生境质量/国土空间用地类型/时空演变/InVEST模型/广西北部湾城市群Key words
habitat quality/types of land use in national territory/spatiotemporal evolution/InVEST model/Guangxi Beibu Gulf urban agglomeration分类
资源环境引用本文复制引用
何彬元,曾嵘,方园园..广西北部湾城市群生境质量时空演变特征研究[J].西北师范大学学报（自然科学版）,2025,61(4):50-60,11.基金项目
国家重点研发计划重点专项(2023YFD2201705-7) （2023YFD2201705-7）
广西林业设计院自筹经费项目(林勘科研[2023]-03号) （林勘科研[2023]-03号）
