Abstract:The farming-pastoral zone of northern China is a large-scale ecotone, which plays dual role both in the ecological function and biological production. It occupies a strategically important position in the national economy. Constructing the optimized eco-productive paradigm is an effective way to scientifically manage this zone. Optimized eco-productive paradigm means a model of combining ecological management system of grass and agro-forestry with optimum structure, sustainable function as well as economica...