摘要
A model with Chinese characterization factors for quantifying the damages to environment by land use in terms of the change in net primary productivity (NPP) of ecosystem was developed in the framework of life cycle assessment (LCA).In this method,the forms of land utilization were divided into two aspects involving long-term use of land (e.g.,for arable farming),namely "land occupation",and the change of land properties (e.g.,from agricultural area to urban area),namely "land transformation".Furthermore,the land use elementary flows (occupation and transformation) and parameters were linked to the impact indicators,and the characterization formulas of the two forms of land utilization were derived respectively according to the ecological theory.Moreover,based on this method,the characterization factors of both land occupation and land transformation were calculated using Chinese empirical information on NPP,which can be incorporated into LCA framework and applied to Chinese LCA case study to fill up the important gap in life cycle impact assessment (LCIA) of land use.
A model with Chinese characterization factors for quantifying the damages to environment by land use in terms of the change in net primary productivity (NPP) of ecosystem was developed in the framework of life cycle assessment (LCA).In this method,the forms of land utilization were divided into two aspects involving long-term use of land (e.g.,for arable farming),namely "land occupation",and the change of land properties (e.g.,from agricultural area to urban area),namely "land transformation".Furthermore,the land use elementary flows (occupation and transformation) and parameters were linked to the impact indicators,and the characterization formulas of the two forms of land utilization were derived respectively according to the ecological theory.Moreover,based on this method,the characterization factors of both land occupation and land transformation were calculated using Chinese empirical information on NPP,which can be incorporated into LCA framework and applied to Chinese LCA case study to fill up the important gap in life cycle impact assessment (LCIA) of land use.
基金
supported by the National Natural Science Foundation of China (Grant No.50525413)
National High Technology Research and Development Program of China ("863" Program)(Grant No.2007AA03Z432)
National Basic Research Program of China ("973" Program)(Grant No.2007CB613706)
National Key Technology Research and Development Program of China (Grant No.2006BAF02A23)
Beijing Natural Science Foundation (Grant No.2081001)
