Adapting Woody Species and Planting Techniques to Landfill Conditions, Field and Laboratory Investigations

摘要

A study was undertaken to determine which tree species can best maintain themselves in a landfill environment; to investigate the feasibility of preventing landfill gas from penetrating the root zone of selected species by using gas-barrier techniques; and to identify the (those) factor(s) which are most important in maintaining adequate plant growth on completed sanitary landfills. Ten replicates of nineteen woody species were planted on a ten-year old completed sanitary landfill and five gas-barrier systems were constructed. Of the nineteen species planted on the landfill black gum proved most tolerant and honey locust least tolerant to anaerobic landfill conditions. Of the five gas-barrier systems tested, three proved effective in preventing penetration of gas into the root systems of the test species. Investigations into the effects of CO2 and CH4 contaminated soil indicated that red maple is more tolerant to the presence of these gases than is sugar maple.