Redai dili (Nov 2024)
Spatio-Temporal Evolution Characteristics and Driving Mechanism of Regional Main Functional Area in the Pearl River Basin
Abstract
Urban, agricultural, and ecological spaces, collectively referred to as the "three types of space," are central elements in China's Territorial and Spatial Planning reforms. These spaces are crucial in bridging the National Main Functional Area Planning and regional coordinated development strategies at a higher level and in guiding land-use control at a lower level. The Pearl River Basin is one of China's most important economic development regions. This basin serves as a crucial region for the case study of evolution of the "three types of space." Understanding this evolution is critical for aligning regional land use with national strategic objectives and optimizing the coordinated development of these spatial elements. Using the National Main Functional Area Planning strategy as a starting point, this study applied a cross-conversion matrix and a multiscale geographically weighted regression model to analyze the evolution characteristics and driving mechanisms of the "three types of spaces" in the Pearl River Basin from 1990 to 2020. Three main results were obtained. First, over the past 30 years, urban space in the Pearl River Basin has expanded considerably, ecological space has slightly increased, but agricultural space has significantly decreased, with marked spatial differences in the evolution of the "three types of spaces" across the upper, middle, and lower reaches of the basin. Agricultural space has fully decreased across all reaches, converting to urban space in the lower reaches and reverting to ecological space in the upper and middle reaches. Second, within different national functional zones, urban space growth is most pronounced in urbanized areas, ecological space recovery is significant in ecological functional zones, and agricultural space has remarkably decreased in major agricultural production areas. Third, the driving factors for the different evolution directions of the "three types of spaces" in the Pearl River Basin vary. Industrial development has significantly driven the expansion of urban spaces, whereas ecological protection policies have effectively promoted the restoration of ecological spaces in key ecological areas. These findings effectively reveal the land-use evolution process in China's socioeconomic development regions over the past 40 years, highlight the risks and influencing factors of rapid urban space development and ecological space threats, and provide an important reference for optimizing land-use patterns in similar key regions of China.
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