Malthusian Assumptions, Boserupian Response in Transition to Agriculture Models

Abstract

The relationship between humans and their environment underwent a radical change during the last 10,000 years: from mobile and small groups of foragers to sedentary extensive cultivators and on to high-density intensive agriculture-based modern society; these transitions fundamentally transformed the formerly predominantly passive human user of the environment into an active component of the Earth system. The most striking impacts of these global transitions have only become visible and measurable during the last 150 years (Crutzen, Nature 415:23, 2002; Crutzen and Stoermer, IGBP Newsletter 41(1):17–18, 2000). Prior to this time frame, the use of forest resources for metal smelting in early Roman times and the extensive medieval agricultural system had already changed the landscape (Barker, Nature 473:163–164, 2011; Kaplan et al., Quaternary Science Reviews 28(27/28):3016–3034, 2009); the global climate effects of these early extensive cultivation and harvesting practices are still under debate (Kaplan et al., The Holocene 21(5):775–791, 2011; Lemmen, Géomorphologie: relief, processus, environnement 2009(4):303–312, 2010; Ruddiman, Climatic Change 61(3):261–293, 2003; Stocker et al., Biogeosciences 8:69–88, 2011).