土壤质量评价方法进展

土壤质量评价是对土壤内部属性变化的总体描述,发展经历了定性到定量的过程,融合了多学科的特征。本文综述了国内外土壤质量评价方法及其研究成果。指数法简单易行,但是带有主观性,会掩饰土壤性质某些质的变化;动态评价方法比较真实地反映土壤质量动态变化的过程,同时还可以将评价结果用于经济学分析,研究范围拓宽;生命周期评价完整研究土壤发生发育的周期,时间尺度上考虑全面,但是没有考虑空间尺度;G IS用于土壤质量评价,能将定量分析与空间分析结合起来,评价结果更具科学性。

Assessment Methods for Soil Quality:a Review

Assessment methods for soil quality and research progress at home and abroad were reviewed.The index method is simple and feasible,but it contains some subjectivity,which may conceal some essential changes of soil characteristics.The dynamic assessment method factually reflects the process of dynamic variability,and meanwhile the assessment results can be used in economic analysis.The life cycle assessment deals with a complete circle of soil genesis,with a comprehensive consideration of time scale,but with no consideration of space scale.Using GIS for soil quality assessment can integrate quantitative analysis with spatial analysis,thus the results of the assessment are more scientific.