Compared with the soils of the Qinghai Tibet Plateau in the 1970s, the contents of Cd, Sb and Ba are higher, among which Cd (2.13 times) and Sb (1.52 times) are more significant; compared with the soils of the Qinghai Tibet Plateau in the early twenty-first Century, the contents of Cd are slightly increased, but the increase is not significant<br>
正在翻译中..