Development Force and Trend of Valley Economy in Mountain Area of Metropolis—A Case of Mentougou District in Beijing

Based on metropolis and regional integration development,taking Mentougou district in Beijing for example,the natural environment appeal and social economy driving force of valley economy development were analyzed,the development trends of valley economy in metropolis were discussed.Research suggests that urban and rural,plain and mountainous area in metropolis should overall develop in high degree,valley economy in mountain area should be brought into metropolis development planning,type of binary structure,resource,extensive and farmers income should develop into the valley economy pattern of urban mountainous area,market-oriented,low carbon and intensive and industry.Government should give some related policy supports for strengthen infrastructure construction and management,promote the sound and fast development of economy and society in mountain area.