ANALYSIS OF CHANGES IN CULTIVATED LAND SECURITY PATTERNS IN HUBEI PROVINCE UNDER THE TRINITY PERSPECTIVE
To comprehensively clarify the pattern of cultivated land security is a crucial approach to effectively manage the relationship between people and land,ensuring national food security. However,limited studies address the dynamic changes in cultivated land security by integrating quantity,quality,and ecological benefits. Therefore,based on the land use survey data of Hubei province in 2009 and 2019,and from a Trinity approach,a comprehensive assessment was conducted to calculate plot area,elevation,and connectivity parameters for defining both quantitative and qualitative changes. Additionally,an index system known as Pressure-State-Response (PSR) was established to evaluate ecological transformations,enabling a comprehensive evaluation of the changing trend in the pattern of cultivated land security. The results were listed as follows. In terms of quantity,the cultivated land showed a spatial trend of increasing in the center and losing in the east and west in the past ten years,in which the transfer of cultivated land in the west had a higher motivation,and the land transfer mainly occurred with forest land. In terms of quality,the average elevation and slope of the supplemented cultivated land was lower than that of the occupied cultivated land,and cultivated land was transferred to the low elevation area and the small-slope area. However,there was a phenomenon of occupying continuous patches and supplementing sporadic patches. In terms of ecology,the level of cultivated land generally declined,and the differences between districts and counties were also expanding. Finally,the results clarify the key areas that should be concerned about cultivated land protection in Hubei province,and provide control measures by zoning and categorization.
cultivated landcultivated land changeland patchTrinityHubei province
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NSTL
万方数据
