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

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

Content Provider	MDPI
Author	Zheng, Xincheng Zou, Zeyao Xu, Chongmin Lin, Sen Wu, Zhilong Qiu, Rongzu Hu, Xisheng Li, Jian
Copyright Year	2021
Description	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.
Starting Page	46
e-ISSN	2073445X
DOI	10.3390/land11010046
Journal	Land
Issue Number	1
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-12-29
Access Restriction	Open
Subject Keyword	Land Remote Sensing Remote-sensing-based Ecological Index Geographically Weighted Regression Kernel Density Road Network Ecoenvironmental System
Content Type	Text
Resource Type	Article

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