北京地区公路两侧土壤pH分布情况调查

The Investigation of the Soil pH along Some Highways in Beijing

为掌握北京公路两侧土壤pH分布特征,选取北京地区5条公路两侧124个采样点,利用国标方法对采集的土壤样品进行了pH测定。结果显示,八达岭高速路、京石高速公路以及京开高速路两侧土壤pH贴近背景值,无明显酸化迹象,而京通快速路以及机场高速路两侧土壤略低于背景值,出现某种程度的酸化趋势。通过分析酸性降水对土壤pH变化的影响,提出防止土壤酸化的建议。

In order to study the current status of soil pH along the highways in Beijing, 124 points along 5 highways were chosen to measure the soil pH. The results reveal that the soil pH values along Badaling expressway, Jingshi expressway and Jingkai expressway are almost similar to the background value, showing no obvious signs of soil acidification. While the soil pH along Jingtong highway and Airport expressway are lower than the corresponding background, predicating signs and trend of soil acidification. The effect of acid rain on soil pH was discussed, and some suggestions on the prevention of soil acidification were advised.