Exergy (available energy) Flow Charts (页面存档备份,存于互联网档案馆) 2.7 YJ solar energy each year for two billion years vs. 1.4 YJ non-renewable resources available once
的成長,但年降雨量400毫米或更少對橡膠藤的種子最好。 Land Protection, Queensland Department of Natural Resources, Mines and Energy. Rubber Vine Management, March 2004 (pdf file)
Eucalyptus citriodora. Australian Biological Resources Study, Department of the Environment and Energy, Canberra. [3 February 2020]. (原始内容存档于2021-11-30)