【摘要】 以陕北农牧交错带的荒漠化土壤为研究对象,通过多元相关分析、回归分析和因子分析,确定了荒漠化程度的土壤评判指标。结果表明,评判土地荒漠化程度时,土壤物理性质指标应选择0.25~0.05 mm砂粒含量,土壤化学性质指标应选择土壤有机质含量,并运用这两个指标建立了荒漠化程度土壤评判指标体系,即通过荒漠化土壤表层0~20 cm上述两个指标的量值来评判荒漠化程度。更多还原

【Abstract】 Taken the desertification land of interlaced zone for farming and animal husbandry in North Shaanxi as the research subject,through the correlation multi-analysis,the regression and the factor analysis,this paper defined a desertification soil degree judgment index.The result indicated that the soil physical property should choose the 0.25-0.05 mm sand grain content,the soil chemistry property should choose the soil OM in the process of degree judgment.Determination system of index for judging the desertification degree through 0-20 cm and surface was established.更多还原