<正> This paper introduces the recent appearance of a circular economy in such industrialized countries as Germany and Japan and outlines its concept and princi
Along with the economic development and the acceleration of urbanization,urban construction land expands rapidly in China,and has resulted in a series of socio-
High population growth and continued economic development have caused serious environmental damage in the Asia Pacific region.However,the recent experience is t
<正>Spring water in the city of Jinan conies from the limestone areas. Understanding the capacity of wellspring conservation is a critical point to resume the p