LAUSR

The prevention and control of saline⁃alkali land is an effective way to improve the comprehensive treatment of saline⁃alkali land and reduce the cost of treatment for such regions. It is also an important way to ensure regional ecological restoration, sustainable land use, and food security. At present, studies on the prevention and control of saline⁃alkali land based on the analysis of regional landscape ecological risk are not sufficient. By considering the perspective of the theory of landscape ecology, this case study aimed to analyze the ecological flow and surface resistance in Lindian County located in Heilongjiang Province by using the minimum cumulative resistance and spatial analysis based on the remote sensing and geographic information system technology. A landscape ecology risk pattern was developed to determine the zones of prevention and control of saline⁃alkali land by using the ecology corridor analysis method considering the key landscape and saline⁃alkali land, and the core areas for the prevention and control plan of saline⁃alkali land were determined. The results showed that the area of saline⁃alkali land in Lindian was 263 km and was characterized by higher landscape ecological risk in the west and south, whereas lower risk in the northeast, central, and southwest regions. The area proportion of the high