During 1910 to 2005 although human population has grown fourfold - TopicsExpress

During 1910 to 2005 although human population has grown fourfold and economic output 17-fold, global human appropriation of net primary production (HANPP) has only doubled. Despite this increase in efficiency, HANPP has still risen from 6.9 Gt of carbon per y in 1910 to 14.8 GtC/y in 2005, i.e., from 13% to 25% of the net primary production of potential vegetation. Citation: Krausmann, F., K.-H. Erb, S. Gingrich, H. Haberl, A. Bondeau, V. Gaube, C. Lauk, C. Plutzar and T. D. Searchinger (2013). "Global human appropriation of net primary production doubled in the 20th century." Proceedings of the National Academy of Sciences 110(25): 10324-10329.

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