Collect and put the relevant materials in order , pass the typical analysis of cases , announce agricultural circulation economic , industrial circulation economy , service trade offal circulation utilize , area ( city ) basic mode of circulation economy , have established the system of frame 對相關(guān)資料進行了搜集與整理,通過典型案例分析,揭示了農(nóng)業(yè)循環(huán)經(jīng)濟、工業(yè)循環(huán)經(jīng)濟、服務(wù)業(yè)廢棄物循環(huán)利用、區(qū)域(城市)循環(huán)經(jīng)濟的基本模式,建立了框架體系。