Forest plantations, water availability, and regional climate change: Controversies surrounding Acacia mearnsii plantations in the upper Palnis Hills, southern India Haripriya Rangan, Christian A. Kull, Lisa Alexander This is an author-archived pre-print of an article published in the journal Regional Environmental Change. The final, definitive version is available at www.springerlink.com, or http://dx.doi.org/10.1007/s10113-009-0098-4 Citation: Rangan, Haripriya, Christian A. Kull, and Lisa Alexander (2010). Forest plantations, water availability, and regional climate change: controversies surrounding Acacia mearnsii plantations in the upper Palni Hills, southern India. Regional Environmental Change 10: 103- 117. H. Rangan(*), C.A. Kull, L. Alexander School of Geography and Environmental Science Monash University Melbourne, VIC 3800 Australia email.
[email protected] L. Alexander (current affiliation) Climate Change Research Centre University of New South Wales Sydney, NSW 2052 Australia *corresponding author: Abstract: Plantation forests not only impact carbon and water cycles, but also affect biodiversity, livelihoods, and shape regional economies. Each of these impacts differs across varying scales of analysis. This paper illustrates how forest, climate change and hydrology debates play out in the context of the forest plantations of Australian black wattle (A. mearnsii) in the upper Palni hills of southern India. We outline the contradictory perspectives of different local groups regarding the impact of plantations on catchment hydrology and water availability, and examine these in relation to changes in the regional economy and rainfall patterns. Our analysis indicates that changes in these two factors have played a more significant role than existing wattle plantations in affecting local and regional water availability.