why is soil around pine trees alkaline
FWIW, there are many species of pine that prefer neutral to alkaline soils rather than those that are more naturally acidic. Obviously if pine needles were by nature that low in pH and had that much effect in reducing soil pH, these trees would be making the soil inhospitable to themselves.he answer is yes. If you had a stand of pine trees, the needles that they drop are going to have an influence on the soil pH local to the trees. It's not the actual plant changing the pH, it is the vegetation decomposing and adding to the soil that can indeed alter soil pH.