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Earth System Dynamics An interactive open-access journal of the European Geosciences Union

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© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
26 May 2014
Review status
A revision of this discussion paper for further review has not been submitted.
The impact of land-use change on the sensitivity of terrestrial productivity to precipitation variability: a modelling approach
L. Batlle-Bayer1, B. J. J. M. van den Hurk2,3, C. Müller4, and J. van Minnen5 1Institute for Marine and Atmospheric research Utrecht, Utrecht University, Utrecht, the Netherlands
2Royal Netherlands Meteorological Institute, De Bilt, the Netherlands
3Institute for Environmental Studies, VU University Amsterdam, Amsterdam, the Netherlands
4Postdam Institute for Climate Impact Research, Potsdam, Germany
5Netherlands Environmental Assessment Agency, Bilthoven, the Netherlands
Abstract. Larger climate variability and more frequent extreme events (e.g. droughts) are expected to occur. Hence, assessing the sensitivity (response) of terrestrial net primary productivity (NPP) to climate variability is crucial for future estimations of terrestrial carbon sequestration. We hypothesize that land-use change (LUC) can modify this sensitivity, defined here as the anomaly correlation between annual NPP and precipitation in the growing season. To assess this changing sensitivity, we use the LPJmL model driven by observed climate variability and two different land-use sets.

We find that the effect of LUC is mostly extended in semi-arid grasslands: sensitivity increases with conversion into rainfed crops, but it does not change for managed pasture expansion. Reforestation in temperate regions generally decreases sensitivity: trees are able to respond later to water deficit due to their deep root system. The expansion of irrigation in northern India reduces sensitivity since water availability is not a limiting factor for crop growth. Although we are able to identify spatial patterns of changes in NPP-precipitation sensitivity, the significance of our results focusing at isolation of the land-use effect is limited.

Citation: Batlle-Bayer, L., van den Hurk, B. J. J. M., Müller, C., and van Minnen, J.: The impact of land-use change on the sensitivity of terrestrial productivity to precipitation variability: a modelling approach, Earth Syst. Dynam. Discuss., 5, 585-616,, 2014.
L. Batlle-Bayer et al.
Interactive discussionStatus: closed (peer review stopped)
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RC C239: 'Review', Anonymous Referee #1, 12 Jun 2014 Printer-friendly Version 
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L. Batlle-Bayer et al.
L. Batlle-Bayer et al.


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