Classical statistics methods were adopted to analyze the soil quality variability,its affecting factors,and affecting degree at a regional scale(700 km2) in the central part of hilly Loess Plateau region of China.There existed great differences in the variability of test soil quality indicators.Soil pH,structural coefficient,silt content,specific gravity,bulk density,total porosity,capillary porosity,and catalase activity were the indicators with weak variability;soil nutrients(N,P,and K) contents,CaCO3 con...
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