我们居住的大地是一块大画布,上面有各种各样的风景,颜色特别丰富。除了大地上的植物、建筑、湖泊外,土壤本身的颜色也很多,其中棕色是土壤的主色调。为什么土壤会以棕色为主色调呢?这一直是一个谜。最近,美国科学家揭示了这个谜底。科学家发现,土壤的主色调与植物有关。揭开土 The land we live in is a large canvas with a variety of landscapes and colors. In addition to the plants, buildings and lakes on the earth, there are many colors of the soil itself, of which the brown is the main color of the soil. Why the soil will be brown-based color? This has been a mystery. Recently, American scientists revealed the answer. Scientists found that the main color of the soil is plant-related. Uncover the soil