Guns, forests and carbon
Is this just the tip of the iceberg? For a long time, it has been believed that environmental conditions have helped induce and exacerbate human conflicts (e.g. Homer-Dixon 1991), and even the collapse of entire civilizations (e.g. Diamond 2004). But are wars and other human conflicts a major cause of global change in the biosphere and climate over the long term?
Whether or not wars are more influential on earth systems than workaday land use for agriculture, the evidence continues to grow that humans are in the driver’s seat when it comes to global climate and the shape of the biosphere. One more reason to stop fighting and start working together to make our planet what we want it to be!
Diamond, J. 2004. Lessons from Environmental Collapses of Past Societies. In “Fourth Annual John H. Chafee Memorial Lecture on Science and the Environment.” pp. 40. National Council for Science and the Environment, Washington, DC. < link to online document>
Homer-Dixon, T. F. 1991. On the Threshold: Environmental Changes as Causes of Acute Conflict. International Security 16, 76-116. http://www.jstor.org/stable/2539061
Li, Z., Saito, Y., Dang, P. X., Matsumoto, E., and Vu, Q. L. 2009. Warfare rather than agriculture as a critical influence on fires in the late Holocene, inferred from northern Vietnam. Proceedings of the National Academy of Sciences 106, 11490-11495. Read the article (free and open): http://www.pnas.org/content/106/28/11490
Tags: agriculture, biomass burning, carbon, carbon dioxide, climate change, conflict, deforestation, Earth Systems, fire, forests, global change, greenhouse gas emissions, Holocene, human impacts, human systems, land cover change