北京山区果园生态系统消解畜禽粪便的服务功能及其价值分析——以北京市平谷区果园为例
북경산구과완생태계통소해축금분편적복무공능급기개치분석——이북경시평곡구과완위례
The Eco-economic Value of the Digestion of Livestock Manure Service of Orchard Eco-systems in Beijing Mountain Area: a Case Study of Orchard in Pinggu of Beijing