摘要
以福建省沿海地区为对象,基于2010年和2020年Landsat遥感数据及道路数据,采用核密度估算、剖面线分析、空间自相关及地理加权回归(GWR)模型,分析道路网络扩展对植被覆盖变化的影响。结果表明:(1)沿海地区核密度整体提高,福州、厦门和泉州等核心城区最为明显;(2)NDVI_zs的空间差异显著,其中轻微改善占34%,显著改善占25%,显著退化占19%;(3)剖面线分析显示,核密度曲线与NDVI变化呈反向趋势,表明道路网络扩展抑制了植被恢复;(4)双变量空间自相关分析显示ΔKDE与NDVI_zs呈显著负相关,聚集性在1500 m×1500 m和2500 m×2500 m尺度上最为显著;(5)GWR模型结果表明,二者负相关关系明显,拟合度最高达0.563。研究为福建省沿海地区道路建设与生态保护提供了科学依据。
This study focuses on the coastal areas of Fujian Province,utilizing Landsat remote sensing data and road data from 2010 and 2020 to analyze the impact of road network expansion on vegetation cover changes.Methods such as kernel density estimation,profile line analysis,spatial autocorrelation,and geographically weighted regression(GWR)models are used.The results indicate:(1)an overall increase in kernel density in the coastal areas,with the most significant growth in core urban areas like Fuzhou,Xiamen,and Quanzhou;(2)significant spatial variation in NDVI_zs,with slight improvement accounting for 34%,significant improvement for 25%,and significant degradation for 19%;(3)profile line analysis reveals an inverse relationship between kernel density and NDVI,indicating that road network expansion suppresses vegetation restoration;(4)bivariate spatial autocorrelation analysis shows a significant negative correlation between△KDE and NDVI_zs,with clustering most evident at scales of 1500 mX1500 m and 2500 mX2500 m;and(5)GWR model results demonstrate a clear negative correlation,with the highest goodness-of-fit reaching O.563.This research provides scientific support for road construction and ecological conservation planning in the coastal areas of Fujian Province.
作者
叶丽敏
胡喜生
邹泽耀
陈瑾
YE Li-min;HU Xi-sheng;ZOU Ze-yao;CHEN Jin(Jinshan College of Fujian Agriculture and Forestry University,Fuzhou 350002,China;College of Transportation and Civil Engineering,Fujian Agriculture and Forestry University,Fuzhou 350002,China)
出处
《公路》
北大核心
2025年第8期361-373,共13页
Highway
基金
国家自然科学基金项目,项目编号31971639
福建省自然科学基金项目,项目编号2019J01406,2023J01477
平潭综合实验区交通与建设局建设科技研究开发项目,项目编号KH220018A
福建农林大学金山学院应用型学科建设项目,项目编号yx190401
教育部产学合作育人项目,项目编号241104718143249
福建省社会科学基金项目,项目编号FJ2025C160。
关键词
交通工程
道路核密度
归一化植被指数
双变量空间自相关
地理加权回归
transportation engineering
road kernel density
normalized difference vegetation index
bivariate spatial autocorrelation
geographically weighted regression
