面向生命周期评价的土地利用生态影响评价方法

初步建立了面向生命周期评价(LCA)的适合我国土地利用生态影响评价的指标、特征化因子和影响大小计量模型.评价指标包括土地利用时间、面积、净初级生产力、土壤有机质含量和地形坡度.分别研究确定了基于NPP、土壤有机质含量和地形坡度的特征化因子及其当量系数.提出了基于顶级群落理论的土地利用生态影响评价计量模型.案例应用表明,提出的方法可为我国开展土地利用的LCA提供初步的技术框架和相关参数.

Methods of ecological impact assessment (EIA) of land use oriented to life cycle assessment (LCA)

The indicators, characterization factors and calculation models for EIA of land use oriented to LCA and China circumstances were provided preliminarily. The assessment indicators consist of time, areas, net primary productivity (NPP), organic material content (OMC), and slope of land used. The characterization factors and their equivalent factors based on NPP, OMC and slope were established respectively. The calculation models and examples of EIA of land use based on the community theories were proposed. The case study showed that the methods proposed here ould provide preliminary technical framework and related parameters for LCA of land use.