2000—2020年京津冀城市群城市化与生态环境耦合分析

doi:10.3969/j.issn.0255-8297.2025.03.009

Abstract

Abstract: Taking the Beijing-Tianjin-Hebei urban agglomeration as the research object, this study constructed a comprehensive light index representing urbanization by integrating night light data, and a remote sensing ecological index representing ecological environment quality by integrating daylight remote sensing MODIS data. The spatial-temporal evolution of urbanization intensity and ecological environment in the Beijing-Tianjin-Hebei urban agglomeration from 2000 to 2020 was studied. Combined with the coupling coordination degree model, the synergistic development relationship between the two was analyzed to provide theoretical support and scientific decision-making for the harmonious coexistence of urbanization and ecological environment in the region. The results show that: 1) Urbanization development exhibited spatial differences across cities, showing a distinct spatial pattern of high levels in the central south and low levels in the northwest. From 2000 to 2010, urbanization developed slowly, while 2010 to 2020 marked a period of rapid development. 2) From 2000 to 2020, the remote sensing ecological index (RSEI) of the Beijing-Tianjin-Hebei urban agglomeration fluctuated greatly. However, on the whole, the RSEI increased from 0.48 in 2000 to 0.58 in 2020, indicating an improvement in the ecological environment quality. In terms of the change in ecological grade, there was a transformation mainly from the poor and relatively poor ecological grades to the medium ecological grade, from the medium ecological grade to the good ecological grade, and from the good ecological grade to the excellent ecological grade. 3) Over the past two decades, the coupling coordination type of the Beijing-Tianjin-Hebei urban agglomeration has transitioned from near-maladjustment with urbanization lag to moderate coordination with ecological environment lag, under the precondition of transformation development. Strengthening ecological protection remains essential as urbanization continues to advance.

Key words: nightlight remote sensing, compounded night light index, remote sensing ecological index, coupling analysis, Beijing-Tianjin-Hebei urban agglomeration

CLC Number:

TP79

ZHANG Yongbin, LI Chunyu, LIU Mingyue, MAN Weidong, SONG Tanglei, LIU Yahui. Coupling Analysis of Urbanization and Ecological Environment in Beijing-Tianjin-Hebei Urban Agglomeration from 2000 to 2020[J]. Journal of Applied Sciences, 2025, 43(3): 475-490.

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Coupling Analysis of Urbanization and Ecological Environment in Beijing-Tianjin-Hebei Urban Agglomeration from 2000 to 2020

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