Soil pH土壤pHsoiln.土地；土壤；污物，粪便v.弄污Soil water erosion module水土流失模型soil climate relationship土壤气候相关性Soil of highway road area高速公路路域土壤soil available phosphorus土壤速效磷soil moisture evaporation土壤蒸发soil pressure measurement土压力量测Soil microbial activities土壤微生物活性soil pollution monitoring土壤污染监测soil-nailing supporting土钉支护soil environment capacity土壤环境容量