土壤环境背景值
soil environmental background
soil environmental background value
土壤侵蚀背景值
background value of soil erosion
土壤元素背景值
soil thresholds of elements
土壤背景氮
indigenous N supply of soil
soil background N
indigenous nitrogen of soils
基准值、背景值与异常值
background value and anomaly value
等值土壤电阻率
equivalent soil resistively
equivalent soil resistivity
土壤pH值变化
variation of pH value of soil
土壤－景观定量模型
Quantitative soil-landscape model