Abstract
To clarify the water preservation grade in soil buried bamboo charcoal, which is applied for light and thin base of rooftop greening, laboratory experiments were carried out by using lamps as heat source. Water content in soil buried bamboo charcoal beneath was 2-3 times higher than that without bamboo charcoal or buried with plastic bullets at seven days after spring water, Soil water content with bamboo charcoal was also intentionally higher than that buried with oak tree or coconut husk charcoal. Little difference was found statistically between different shapes of bamboo charcoal or soil structures, but carbonization temperature of bamboo, 620 and 780℃ are better than 430℃ for soil water preservation.
