Abstract
The pavements such as white ball stones are used for the arranging scenery such as gardens, but there is a case green algae grow on the stone surface, and to harm a beauties of scene. We performed a field work and picked pavement adhesion algae and identified it. In addition, we conducted an investigation into the environmental condition that outbreak ⁄ the adhesion of the algae was easy to happen. Natural fading of the pavement surface which did greening by the adhesion of the algae if an environmental attendant condition matches gets up. By the experiments, we confirmed that we had natural fading in a short term because it was come to light in direct rays of the sun and the rain.
