Impact of cross-border transportation corridors on changes of land use and landscape pattern: A case study of the China-Laos railway

Regional integration initiatives have triggered impacts on land use changes (LUC) and landscape patterns through geo-economic cooperation like cross-border infrastructure, which are often presented, but comprehensive studies on the extent and degree remains insufficient. The China-Laos Railway (CLR), a cross-border transportation corridor connecting Kunming in China with the Laotian capital, Vientiane, which was launched in December 2016 and operation started in December 2021, has recently witnessed rapid and notable changes in landscape and land use. This case study provides a distinctive opportunity to evaluate the relative significance of political and socioeconomic factors on LUC and landscape patterns. In this study, we integrate 10-m land-use data products (2017-2022) provided by Environmental Systems Research Institute, Inc (ESRI) with geospatial analysis to quantify and compare the impacts of cross-border transportation corridors on LUC within a 10 km buffer area along the CLR. The results showed that since 2017, about 3 % deforestation caused by the expansion of cropland (8 %) and construction land (38 %) along the CLR. The comprehensive dynamic degree along the CLR displays two peaks, appearing within the 2-4 km and 8-10 km buffer zones. Interestingly, the fragmentation of land patches within the buffer zone decreases as the distance from the CLR increases. Moreover, the construction of the CLR has a greater impact on the Laotian side, while its completion and operation triggered more significant changes on the Chinese side. The study quantitatively assesses the extent, type, and intensity of the impacts of cross-border transportation corridors on LUC and landscape patterns.

Automated summary

Regional integration initiatives, such as cross-border transportation corridors, have significant impacts on land use changes and landscape patterns. This study examines the China-Laos Railway as a case study to evaluate the extent and significance of these impacts. Using land-use data and geospatial analysis, the study quantifies and compares the effects of the railway on land use changes within a buffer zone along the corridor.