全球智库信息集成服务系统(G2TT): The Nexus Land-Use Model, an Approach Articulating Biophysical Potentials and Economic Dynamics to Model Competition for Land-Uses

G2TT

来源类型	FEEM working papers "Note di lavoro" series
规范类型	论文
	The Nexus Land-Use Model, an Approach Articulating Biophysical Potentials and Economic Dynamics to Model Competition for Land-Uses
	F. Souty; T. Brunelle; P. Dumas; B. Dorin; P. Ciais; R. Crassous
发表日期	2012
出处	Climate Change and Sustainable Development
出版年	2012
语种	英语
摘要	Interactions between food demand, biomass energy and forest preservation are driving both food prices and land-use changes, regionally and globally. This study presents a new model called Nexus Land-Use which describes these interactions through a generic representation of agricultural intensification mechanisms. The Nexus Land-Use model equations combine biophysics and economics into a single coherent framework to calculate crop yields, food prices, and resulting pasture and cropland areas within 12 regions inter-connected with each other by international trade. The representation of cropland and livestock production systems in each region relies on three components: (i) a biomass production function derived from the crop yield response function to inputs such as industrial fertilisers ; (ii) a detailed representation of the livestock production system subdivided into an intensive and an extensive component, and (iii) a spatially explicit distribution of potential (maximal) crop yields prescribed from the Lund-Postdam-Jena global vegetation model for managed Land (LPJmL). The economic principles governing decisions about land-use and intensification are adapted from the Ricardian rent theory, assuming cost minimisation for farmers. The land-use modelling approach described in this paper entails several advantages. Firstly, it makes it possible to explore interactions among different types of demand for biomass for food and animal feed, in a consistent approach, including indirect effects on land-use change resulting from international trade. Secondly, yield variations induced by the possible expansion of croplands on less suitable marginal lands are modelled by using regional land area distributions of potential yields, and a calculated boundary between intensive and extensive production. The model equations and parameter values are first described in detail. Then, idealised scenarios exploring the impact of forest preservation policies or rising energy price on agricultural intensification are described, and their impacts on pasture and cropland areas are investigated.
特色分类	Q11;Q15
关键词	Land-use Change Modelling Global Biomass Projections
URL	https://www.feem.it/en/publications/feem-working-papers-note-di-lavoro-series/the-nexus-land-use-model-an-approach-articulating-biophysical-potentials-and-economic-dynamics-to-model-competition-for-land-uses/
来源智库	Fondazione Eni Enrico Mattei (Italy)
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/118049
推荐引用方式 GB/T 7714	F. Souty,T. Brunelle,P. Dumas,et al. The Nexus Land-Use Model, an Approach Articulating Biophysical Potentials and Economic Dynamics to Model Competition for Land-Uses. 2012.

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文件名称/大小	资源类型	版本类型	开放类型	使用许可
20123221536501Nota_d（71KB）	智库出版物		限制开放	CC BY-NC-SA	浏览
20123221537154NDL201（2264KB）	智库出版物		限制开放	CC BY-NC-SA	浏览