Land-Use/Landscape Pattern Changes and Related Environmental Driving Forces in a Dong Ethnic Minority Village in Southwestern China

Abstract

This paper outlines land-use/landscape pattern changes and relationships between land-use change trajectories and environmental variables in the Dong ethnic-minority village of Gaoyou in southwestern China. In the study, landscape metrics were applied to evaluate changes in land use and landscape patterns using GeoEye-1 satellite imagery for 2009/2020 and drone imagery for 2019, and redundancy analysis (RDA) was applied to clarify the relationship between land-use change trajectories and environmental variables. The 10–30% change in land use observed across each time sequence indicated rapid development in the area, resulting in increased fragmentation and reduced aggregation. The findings showed efficient usage of land resources in Gaoyou. Accessibility to land tended to govern the characteristics of land-use change, with natural variables influencing the type of development. The results also indicated that farmers responded quickly to government subsidies promoting tea and camellia plantations, unplanned road construction was causing fragmentation, and official land-use map content differed from the authors’ observations. Accordingly, the government should make integrated long-term plans for the development of ethnic-minority villages and engage in remote-sensor monitoring of local land-use change.

Keywords

• land-use change
• landscape patterns
• landscape metrics
• ethnic minorities