Global climate change and its influence on human migration have caused heated debates. There is no consensus about the role of environmental change in shaping migration decisions. To amass more evidence and develop a deeper understanding of the relations between the environment and migration, this paper seeks to evaluate the importance of various drivers (economic, social, political, demographic, and environmental drivers) and determine the internal mechanism in the decision process.

Gully erosion is the destructive and dramatic form of land degradation in Northeast China. The region is the grain production and ecological security base of China where the fertile and productive Mollisols are distributed. Though the region was agriculturally developed relatively recently, it went through high intensity cultivation and fast succession processes within short-time scales. Coupled with irrational farming practice choice and land use, hillslope erosion and gully erosion are seriously threatening agricultural production and environmental stability in the region.

Land degradation is a multifaceted phenomenon. In many mountainous and hilly areas that are marginal in terms of their economic and social sustainability, degradation is closely linked to population decline through ageing and outmigration, and to the abandonment of land, leading to a loss of community resilience. These processes acting together can produce positive feedback loops, with the consequential loss of socio-economic resilience at larger spatial scales that can ultimately lead to the disintegration of entire territories.