Preprints
https://doi.org/10.5194/gmd-2021-76
https://doi.org/10.5194/gmd-2021-76

Submitted as: model description paper 10 May 2021

Submitted as: model description paper | 10 May 2021

Review status: a revised version of this preprint is currently under review for the journal GMD.

Estimating global land system impacts of timber plantations using MAgPIE 4.3.2

Abhijeet Mishra1,2, Florian Humpenöder1, Jan Philipp Dietrich1, Benjamin Leon Bodirsky1, Brent Sohngen3, Christopher P. O. Reyer1, Hermann Lotze-Campen1,2, and Alexander Popp1 Abhijeet Mishra et al.
  • 1Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz Association, P.O. Box 60 12 03, 14412 Potsdam, Germany
  • 2Humboldt University of Berlin, Department of Agricultural Economics, Unter den Linden 6, 10099 Berlin, Germany
  • 3The Ohio State University Department of Agricultural, Environmental and Development Economics, Columbus, Ohio, United States of America

Abstract. Out of 1150 Mha of forests designated primarily for production purposes in 2020, plantations account for 11 % (131 Mha) of area and fulfilled more than 33 % of the global industrial roundwood demand. Yet, adding additional timber plantations to meet increasing timber demand increases competition for scarce land resources between different land-uses for food, feed, livestock and timber production. Despite their significance in roundwood production, the importance of timber plantations in meeting the long-term timber demand and the implications of plantation expansion for overall land-use dynamics have not been studied in detail so far, in particular not the competition for land between agriculture and forestry in existing land-use models.

This paper describes the extension of the modular, open-source land-system Model of Agricultural Production and its Impact on the Environment (MAgPIE) by a detailed representation of forest land, timber production and timber demand dynamics. These extensions allow for understanding the land-use dynamics (including competition for land) and associated land-use change emissions of timber production.

We show that the spatial cropland patterns differ when timber production is accounted for, indicating that timber plantations compete with cropland for the same scarce land resources. When plantations are established on cropland, it causes cropland expansion and deforestation elsewhere. As a result of increasing timber demand, we show an increase in plantations area by 140 % until the end of the century (+132 Mha in 1995–2100). We also observe in our model results that the increasing demand for timber increases scarcity of land, and causes intensification through yield increasing technological change by 117 % in croplands by 2100 relative to 1995. Through the inclusion of new forest plantation and natural forest dynamics, our estimates of land-related CO2 emissions match better with observed data in particular the gross land-use change emissions and carbon uptake (via regrowth), reflecting higher deforestation for expansion of managed land and timber production, and higher regrowth in natural forests as well as plantations.

Abhijeet Mishra et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gmd-2021-76', Pekka Lauri, 19 Jun 2021
    • AC1: 'Reply on RC1', Abhijeet Mishra, 18 Aug 2021
  • RC2: 'Comment on gmd-2021-76', Walter Rossi Cervi, 26 Jul 2021
    • AC2: 'Reply on RC2', Abhijeet Mishra, 18 Aug 2021
  • EC1: 'Comment on gmd-2021-76', Daniel Huppmann, 14 Aug 2021
    • AC3: 'Reply on EC1', Abhijeet Mishra, 18 Aug 2021

Abhijeet Mishra et al.

Data sets

Model outputs MAgPIE 4.3.2 Abhijeet Mishra and Florian Humpenöder http://doi.org/10.5281/zenodo.4576401

Model code and software

MAgPIE 4.3.2 source code Abhijeet Mishra https://github.com/abhimishr/magpie/releases/tag/v4.3.2

Abhijeet Mishra et al.

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Short summary
Timber plantations are an increasingly important source for roundwood production, next to harvest from natural forests. However, so far timber plantations are underrepresented in global land-use models. Here, we include timber production and plantations in the MAgPIE modeling framework. This allows to capture the competition for land between agriculture and forestry. We show that increasing timber plantations in the coming decades partly compete with cropland for limited land resources.