Experimental Study on Growth of Young Trees under the Pressure of One Tenth of Earth Atmosphere

Abstract

To investigate the possibility of synthesizing an extraterrestrial ecological system, which hosts human beings and forests as its member, effects of environmental pressure on growth of trees were experimentally studied. Two young Hinoki cypress trees were planted in the air under pressure of one tenth of terrestrial atmosphere for six months and compared with other two trees for control. The test samples grew for more than four months but deteriorated at the end of the experiment and died months after retrieved to the normal atmosphere. Another short-term experiment conducted separately confirmed that one of the trees could photosynthesize under the similar subatmospheric air with carbon dioxide enriched.