Extraction of Urban Built-Up Areas Using Nighttime Light (NTL) and Multi-Source Data: A Case Study in Dalian City, China

Author:

Li Xueming12,Song Yishan12,Liu He12ORCID,Hou Xinyu12

Affiliation:

1. School of Geography, Liaoning Normal University, Dalian 116029, China

2. Human Settlements Research Center, Liaoning Normal University, Dalian 116029, China

Abstract

The rapid urban development associated with China’s reform and opening up has been the source of many urban problems. To understand these issues, it is necessary to have a deep understanding of the distribution of urban spatial structure. Taking the six districts of Dalian as an example, in this study, we integrated the enhanced vegetation index, points of interest, and surface temperature data into night light data. Furthermore, herein, we analyze the kernel density of the points of interest and construct three indices using image geometric mean: a human settlement index (HSI), a HSI-POI (HP) index, and a HSI-POI-LST (HPL) index. Using a support vector machine to identify the land type in Dalian’s built-up area, 1000 sampling points were created for verification. Then, the threshold boundary corresponding to the highest overall accuracy of each index and kappa coefficient was selected. The relevant conclusions are as follows: As compared with the other three types of data, the HPL index constructed in this study exhibited natural and social attributes, and the built-up area extracted using this method had the highest accuracy, a high image spatial resolution, and was able to overcome the omission issues observed when using one or two data sources. In addition, this method produces richer spatial details of the actual built-up area and provides more choices for assessing small-scale urban built-up areas in future research.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

Nature and Landscape Conservation,Ecology,Global and Planetary Change

Reference56 articles.

1. Exploring land use and land cover effects on air quality in Central Alabama using GIS and remote sensing;Superczynski;Remote Sens.,2011

2. Pollution Urbanization and its effects on water resources: An exploratory analysis;Rashid;Asian J. Water Environ.,2018

3. Spatiotemporal patterns of summer urban heat island in Beijing, China using an improved land surface temperature;Liu;J. Clean. Prod.,2020

4. Evidence for a significant urbanization effect on climate in China;Zhou;Proc. Natl. Acad. Sci. USA,2004

5. Traffic Congestion, Spatial Spillovers and Population Urbanization in China;Jiang;Collect. Essayson Financ. Econ.,2019

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3