Can the cemetery be completely sealed with cement?

According to the regulations on the management of tombs, it is forbidden to seal, dig or destroy tombs without permission, and offenders need to bear the corresponding expenses and face legal responsibilities. Sealing graves with cement will pollute the environment, and cement contains chemicals, which will have a negative impact on soil fertility and the nearby ecological environment. For the area where the cemetery is located, cement-sealed graves will lead to water pollution and other environmental problems and are not allowed.