
Spatial and temporal evolution and distribution pattern of China’s relocation land converted to ecological land
ZHANG Guilian, YI Yang, ZHANG Lang
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2023, Vol. 47 ›› Issue (6) : 263-271.
Spatial and temporal evolution and distribution pattern of China’s relocation land converted to ecological land
【Objective】 The distribution and change in relocated areas are signs and footprints of human activities, reflecting human disturbance to the natural ecological environment. This study systematically examined the temporal and spatial evolutionary characteristics of the relocation area. The data provide a theoretical basis for the improvement of ecological space quality and function. 【Method】Based on GlobeLand30 surface coverage data, superposition, spatial autocorrelation, and directional distribution analyses, and a landscape pattern index were used to study the change in quantity and spatial distribution characteristics of relocation land that was changed to ecological land in prefecture-level administrative regions of China in the past 20 years. 【Result】Relocation areas in China were mainly concentrated in central China, south China, and northeast China. Their spatial distribution displayed a significant autocorrelation. The hot and cold spots in the relocation area exhibited obvious directionality. The hotspot area gradually moved northeast and the cold spot area gradually moved north. There were four types of local spatial autocorrelations in the relocation area, including High-High (HH), Low-Low (LL), Low-High (LH), and High-Low (HL) aggregations. HH and LL were the main types, HH and LL showed a continuous trend, LH was scattered around HH, and HL was less common. The proportion of lanscape area are occupied by patches (PLAND) in the relocated area increased and the average area(MPS) gradually decreased, indicating that the relocated area gradually increased in the form of small patches. 【Conclusion】This study quantified the area and proportion of relocation area in prefecture-level administrative regions of China. Most of the relocation areas were located in economically developed cities, such as the central and eastern regions and southern regions. This study provides data that will support urban planning and development.
relocation of construction land / spatial pattern / space-temporal change / ecological land / GlobeLand30
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