A Study on Spatiotemporal Evolution Patterns of Cultivated Land Based on LUCC Intensity Chromatogram
Utilized the Intensity Map model(IM model)to construct an intensity chromatogram of land use change,the article analyzed the spatiotemporal evolution pattern of the"non-agricultural"and"non-grain"of cultivated land in Guangdong province from the perspective of absolute and relative intensity,which provides support for decision-making regarding cultivated land protection in the new period.The results show that:①The cultivated land showed a characteristic of systematic tendency while converted into construction land,especially into the industrial,mining,and transport land with significantly higher absolute transfer intensity levels than the average.②The cultivated land showed a characteristic of absolute tendency while converted into garden land,forest land,and pond,among which the comparative effectiveness of economic benefits was particularly outstanding when converted into garden land.③The inflow process of cultivated land in Guangdong province was dominated by woodland and grassland and showed tendentious characteristics.④The overall spatial change of cultivated land in Guangdong province from 2005 to 2023 can be orderly characterized by"whole region rapid reduction period,whole region aggregate equilibrium period,coastal areas decrease period,whole region stable growth period".The paper suggests strengthening the top-level design of systems such as cultivated land use control,cultivated land subsidy incentives,and cross-regional compensation for cultivated land protection,that is combining positive incentives and negative constraints,to promote the dynamic balance of the total amount of cultivated land in Guangdong province.
land use/cover changeabsolute intensityrelative intensitycultivated landGuangdong province
万方数据
维普
