Preprints
https://doi.org/10.5194/esdd-5-585-2014
https://doi.org/10.5194/esdd-5-585-2014
26 May 2014
 | 26 May 2014
Status: this preprint was under review for the journal ESD. A revision 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-Bayer, B. J. J. M. van den Hurk, C. Müller, and J. van Minnen

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.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
L. Batlle-Bayer, B. J. J. M. van den Hurk, C. Müller, and J. van Minnen
 
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
  • RC C239: 'Review', Anonymous Referee #1, 12 Jun 2014 Printer-friendly Version
  • RC C252: 'Review', Anonymous Referee #2, 17 Jun 2014 Printer-friendly Version
 
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
  • RC C239: 'Review', Anonymous Referee #1, 12 Jun 2014 Printer-friendly Version
  • RC C252: 'Review', Anonymous Referee #2, 17 Jun 2014 Printer-friendly Version
L. Batlle-Bayer, B. J. J. M. van den Hurk, C. Müller, and J. van Minnen
L. Batlle-Bayer, B. J. J. M. van den Hurk, C. Müller, and J. van Minnen

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