重点生态区
important ecological area
自然生态环境
natural ecological environment
Natural eco-environment
自然生态与资源
Natural Zoology and Resources
自然生态阻力
natural ecological resistance
自然生态系统
natural ecosystem
natural ecosystems
difference
diversity models of land usage
农业生态区
agricultural ecological sections
agri-ecological zones
agro-ecological regions
夏播生态区
Summer sowing ecological region