Coupling coordination analysis of urbanization and eco-environment in Ningxia based on DMSP-OLS and MODIS data

doi:10.13474/j.cnki.11-2246.2021.298

Abstract

Abstract: A scientific understanding of the coupling and coordination mechanism between urbanization and eco-environment is of great significance for promoting the ecological protection and high-quality development in the Yellow River Basin and the areas where the Yellow River passes. In this study, Ningxia Hui Autonomous Region is taken as an example and a long-time sequence of DMSP-OLS nighttime light data is used to establish an urban nighttime light index (UNLI). A method of constructing remote sensing ecological index (RSEI) for large regional scale is proposed by using MOD09A1 and MOD11A2. On this basis, the coupling coordination degree model (CCDM) is used to analyze the development process of urbanization and eco-environment of five prefecture level cities in Ningxia from 2000 to 2012. The results show that:①The UNLI of Ningxia is significantly correlated with GDP per capita, primary, secondary and tertiary industries (p<0.001), which can better reflect the level of urbanization. ②The RSEI based on MOD09A1 and MOD11A2 can better reflect the temporal and spatial variation characteristics of Ningxia ecological environment quality. ③The coupling coordination degree of urbanization and eco-environment of Ningxia show a steady upward trend. Ningxia is in the transformation stage of basic coordination and lagging eco-environment. The results have important reference value for ecological protection and high-quality development of cities along the Yellow River.

Key words: the Yellow River Basin, DMSP nighttime light, MODIS, urbanization, eco-environment

CLC Number:

P237

ZHAO Jinlong, ZHAO Hui. Coupling coordination analysis of urbanization and eco-environment in Ningxia based on DMSP-OLS and MODIS data[J]. Bulletin of Surveying and Mapping, 2021, 0(10): 9-14,27.

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