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A New Remote Sensing Index for Assessing Spatial Heterogeneity in Urban Ecoenvironmental-Quality-Associated Road Networks

Author

Listed:
  • Xincheng Zheng

    (College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China)

  • Zeyao Zou

    (College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China)

  • Chongmin Xu

    (College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China)

  • Sen Lin

    (College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China)

  • Zhilong Wu

    (College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China)

  • Rongzu Qiu

    (College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China)

  • Xisheng Hu

    (College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China)

  • Jian Li

    (College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China)

Abstract

Although many prior efforts found that road networks significantly affect landscape fragmentation, the spatially heterogeneous effects of road networks on urban ecoenvironments remain poorly understood. A new remote-sensing-based ecological index (RSEI) is proposed to calculate the ecoenvironmental quality, and a local model (geographically weighted regression, GWR) was applied to explore the spatial variations in the relationship between kernel density of roads (KDR) and ecoenvironmental quality and understand the coupling mechanism of road networks and ecoenvironments. The average effect of KDR on the variables of normalized difference vegetation index (NDVI), land surface moisture (LSM), and RSEI was negative, while it was positively associated with the soil index (SI), normalized differential build-up and bare soil index (NDBSI), index-based built-up index (IBI), and land surface temperature (LST). This study shows that rivers and the landscape pattern along rivers exacerbate the impact of road networks on urban ecoenvironments. Moreover, spatial variation in the relationship between road network and ecoenvironment is mainly controlled by the relationship of the road network with vegetation and bare soil. This research can help in better understanding the diversified relationships between road networks and ecoenvironments and offers guidance for urban planners to avoid or mitigate the negative impacts of roads on urban ecoenvironments.

Suggested Citation

  • Xincheng Zheng & Zeyao Zou & Chongmin Xu & Sen Lin & Zhilong Wu & Rongzu Qiu & Xisheng Hu & Jian Li, 2021. "A New Remote Sensing Index for Assessing Spatial Heterogeneity in Urban Ecoenvironmental-Quality-Associated Road Networks," Land, MDPI, vol. 11(1), pages 1-16, December.
    • Handle: RePEc:gam:jlands:v:11:y:2021:i:1:p:46-:d:713445
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    References listed on IDEAS

    as
    1. Li, Taian & Shilling, Fraser & Thorne, James H. & Li, Fengmin & Schott, Heidi & Boynton, Ryan & Berry, Alison M, 2010. "Fragmentation of China’s landscape by roads and urban areas," Institute of Transportation Studies, Working Paper Series qt3c2527hk, Institute of Transportation Studies, UC Davis.
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