John Helming

Dr. John Helming


Research Focus & Metrics

Academic Career Length

34Years (1993-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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17 November 2015 in Regional Environmental Change
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Journal Article
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JSJulia Stürck
Julia Stürck
CLChristian Levers
Christian Levers
EZEmma Henriëtta Van Der Zanden
Emma Henriëtta Van Der Zanden
CSCatharina Johanna Elizabeth Schulp
Catharina Johanna Elizabeth Schulp
PVPieter Verkerk
Pieter Verkerk
PVPeter Verburg
Peter Verburg
Explorations of future land use change are important to understand potential conflicts between competing land uses, trade-offs associated with particular land change trajectories, and the effectiveness of policies to steer land systems into desirable states. Most model-based explorations and scenario studies focused on conversions in broad land use classes, but disregarded changes in land management or focused on individual sectors only. Using the European Union (EU) as a case study, we developed an approach to identifying typical combinations of land cover and management changes by combining the results of multimodel simulations in the agriculture and forest sectors for four scenarios from 2000 to 2040. We visualized land change trajectories by mapping regional hotspots of change. Land change trajectories differed in extent and spatial pattern across the EU and among scenarios, indicating trajectory-specific option spaces for alternative land system outcomes. In spite of the large variation in the area of change, similar hotspots of land change were observed among the scenarios. All scenarios indicate a stronger polarization of land use in Europe, with a loss of multifunctional landscapes. We analyzed locations subject to change by comparing location characteristics associated with certain land change trajectories. Results indicate differences in the location conditions of different land change trajectories, with diverging impacts on ecosystem service provisioning. Policy and planning for future land use needs to account for the spatial variation of land change trajectories to achieve both overarching and location-specific targets.

21 October 2016 in Regional Environmental Change
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Journal Article
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PVPieter Verkerk
Pieter Verkerk
MLMarcus Lindner
Marcus Lindner
MPMarta Pérez-Soba
Marta Pérez-Soba
JPJames S. Paterson
James S. Paterson
JHJohn Helming
John Helming
EZEmma H. van der Zanden
Emma H. van der Zanden

1 September 2019 in Land Use Policy
Verified
Journal Article
Open access
CRCarlo Rega
Carlo Rega
JHJohn Helming
John Helming
MPMaria Luisa Paracchini
Maria Luisa Paracchini

11 January 2017 in Regional Environmental Change
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Journal Article
Open access
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JHJohn Helming
John Helming
ATAndrzej Tabeau
Andrzej Tabeau
In this study, we assessed the economic, environmental and agricultural land use impacts in the EU of a 20% reduction in the Pillar I budget of the Common Agricultural Policy (CAP) of the European Union (EU) and spending the saved money via a subsidy on labour in primary agriculture. The impact of such a policy has been assessed with a computable general equilibrium (CGE) model and a partial equilibrium (PE) model. It is concluded that reallocation of Pillar I budgets to a coupled agricultural labour subsidy increased employment in agriculture, especially in agricultural sectors and regions that are relatively labour intensive. Average employment in agriculture in the EU increased with 1.6% in the CGE model and with 0.6% in the PE model. Agricultural production and environmental emissions from agriculture increased as well. At the same time, prices of agricultural outputs decreased. Value added including subsidies increased for agricultural labour, but total value added in agriculture decreased. The latter was especially explained by decreased land prices and land-related value added. Measured in terms of equivalent variation, total welfare in the EU decreased. Welfare costs equalled about 1400 € per full-time work equivalent in agriculture extra. These results show that policy makers should weigh carefully the pros and cons of the direct and indirect overall economic, environmental and land use impacts of a subsidy on agricultural labour at the expense of the Pillar I budget of the EU CAP.

11 October 2018 in Energies
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Journal Article
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PGPhilippidis George
Philippidis George
HBHeleen Bartelings
Heleen Bartelings
JHJohn Helming
John Helming
RMRobert M’barek
Robert M’barek
ESEdward Smeets
Edward Smeets
HMHans Van Meijl
Hans Van Meijl
As the EU is moving towards a low carbon economy and seeks to further develop its renewable energy policy, this paper quantitatively investigates the impact of plausible energy market reforms from the perspective of bio-renewables. Employing a state-of-the-art biobased variant of a computable general equilibrium model, this study assesses the perceived medium-term benefits, risks and trade-offs which arise from an advanced biofuels plan, two exploratory scenarios of a more ‘sustainable’ conventional biofuels plan and a ‘no-mandate’ scenario. Consistent with more recent studies, none of the scenarios considered present significant challenges to EU food-security or agricultural land usage. An illustrative advanced biofuels plan simulation requires non-trivial public support to implement whilst a degree of competition for biomass with (high-value) advanced biomass material industries is observed. On the other hand, it significantly alleviates land use pressures, whilst lignocellulose biomass prices are not expected to increase to unsustainable levels. Clearly, these observations are subject to assumptions on technological change, sustainable biomass limits, expected trends in fossil fuel prices and EU access to third-country trade. With these same caveats in mind, the switch to increased bioethanol production does not result in significant market tensions in biomass markets.

16 May 2017 in Regional Environmental Change
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Journal Article
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HLHermann Lotze-Campen
Hermann Lotze-Campen
PVPeter H. Verburg
Peter H. Verburg
APAlexander Popp
Alexander Popp
MLMarcus Lindner
Marcus Lindner
PVPieter Verkerk
Pieter Verkerk
BBBenjamin Bodirsky
Benjamin Bodirsky