Spatial-temporal Evolution and Patterns of Production-Living-Ecological Space of Nanzhai Terraces in Qingshui River Valley
In the context of rapid urbanization,the traditional terraced agricultural cultural landscape in mountain-ous areas is experiencing severe degradation and the need for sustainable development.Therefore,it is of practical significance to clarify the spatial-temporal patterns and evolution rules of the production-living-ecological space in terraced areas for the protection and development of agricultural landscapes in mountainous regions.Taking the Nanzhai terraces in Qingshui River Valley as a case study,we employed GIS spatial data,Participatory Rural As-sessment(PRA),terrain niche index,and land use transfer matrices to analyze the spatial-temporal evolution and pattern characteristics of the production-living-ecological space from 2000 to 2020.The results are as follows:1)In terms of quantity change,the production space has decreased in area,while the living and ecological spaces have expanded.2)Regarding pattern evolution,the production space exhibits a ladder distribution pattern with signifi-cant aggregation and weak dispersion.Notably,a contraction trend is in the southern and eastern parts of the study area.The living space tends to expand in a dispersed manner from the central aggregation point towards the periph-ery.The ecological space spreads along both banks of the Qingshui River,and when intersecting with production and living spaces,it exhibits fragmented distribution characteristics.3)Concerning changes in topographic distribu-tion,the production space has shifted towards medium-high terrain gradients,while shrinking on low terrain gradi-ents.The living space has shifted towards medium and low terrain gradients.In terms of the ecological space,there is a concentration trend towards low topographic gradients.4)As for area transfer behavior,frequent transfers occur among the production,living,and ecological spaces.Notably,the main characteristics include the outflow of pro-duction space and the inflow of living space and ecological space.
production-living-ecological spacespatial-temporal evolutionGeographic Information Systempopula-tion migration in mountainous regionNanzhai Terrace
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