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Author Biewald, A.; Lotze-Campen, H. openurl 
  Title Land und Wasser für die globale Landwirtschaft: Herausforderungen und Lösunge Type Conference Article
  Year (down) 2013 Publication Abbreviated Journal  
  Volume Issue Pages  
  Keywords TradeM  
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  Area Expedition Conference Leopoldina-Symposium, Das zukünftige Modell der agrarischen Landnutzung - Intensivierung und Ökologisierung?, Halle, Germany, 2013-10-28 to 2013-10-29  
  Notes Approved no  
  Call Number MA @ admin @ Serial 2322  
Permanent link to this record
 

 
Author Lotze-Campen, H. openurl 
  Title Bevölkerungswachstum und Ressourcenknappheit Type Journal Article
  Year (down) 2013 Publication AMOSinternational Abbreviated Journal AMOSinternational  
  Volume 7 Issue 1 Pages 13-19  
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  Area Expedition Conference  
  Notes TradeM Approved no  
  Call Number MA @ admin @ Serial 4610  
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Author Schmitz, C.; Lotze-Campen, H.; Gerten, D.; Dietrich, J.P.; Bodirsky, B.; Biewald, A.; Popp, A. url  doi
openurl 
  Title Blue water scarcity and the economic impacts of future agricultural trade and demand Type Journal Article
  Year (down) 2013 Publication Water Resource Research Abbreviated Journal Water Resource Research  
  Volume 49 Issue 6 Pages 3601-3617  
  Keywords water scarcity; land use model; irrigation efficiency; trade liberalization; livestock consumption; modeling; land cover change; water budgets  
  Abstract An increasing demand for agricultural goods affects the pressure on global water resources over the coming decades. In order to quantify these effects, we have developed a new agroeconomic water scarcity indicator, considering explicitly economic processes in the agricultural system. The indicator is based on the water shadow price generated by an economic land use model linked to a global vegetation-hydrology model. Irrigation efficiency is implemented as a dynamic input depending on the level of economic development. We are able to simulate the heterogeneous distribution of water supply and agricultural water demand for irrigation through the spatially explicit representation of agricultural production. This allows in identifying regional hot spots of blue water scarcity and explicit shadow prices for water. We generate scenarios based on moderate policies regarding future trade liberalization and the control of livestock-based consumption, dependent on different population and gross domestic product (GDP) projections. Results indicate increased water scarcity in the future, especially in South Asia, the Middle East, and north Africa. In general, water shadow prices decrease with increasing liberalization, foremost in South Asia, Southeast Asia, and the Middle East. Policies to reduce livestock consumption in developed countries not only lower the domestic pressure on water but also alleviate water scarcity to a large extent in developing countries. It is shown that one of the two policy options would be insufficient for most regions to retain water scarcity in 2045 on levels comparable to 2005.  
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  ISSN 0043-1397 ISBN Medium Article  
  Area Expedition Conference  
  Notes TradeM Approved no  
  Call Number MA @ admin @ Serial 4502  
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Author Dietrich, J.P.; Popp, A.; Lotze-Campen, H. url  doi
openurl 
  Title Reducing the loss of information and gaining accuracy with clustering methods in a global land-use model Type Journal Article
  Year (down) 2013 Publication Ecological Modelling Abbreviated Journal Ecol. Model.  
  Volume 263 Issue Pages 233-243  
  Keywords aggregation; downscaling; clustering; information conservation; land use model; scale; scales; agriculture; simulation; dynamics; pattern  
  Abstract Global land-use models have to deal with processes on several spatial scales, ranging from the global scale down to the farm level. The increasing complexity of modern land-use models combined with the problem of limited computational resources represents a challenge to modelers. One solution of this problem is to perform spatial aggregation based on a regular grid or administrative units such as countries. Unfortunately this type of aggregation flattens many regional differences and produces a homogenized map of the world. In this paper we present an alternative aggregation approach using clustering methods. Clustering reduces the loss of information due to aggregation by choosing an appropriate aggregation pattern. We investigate different clustering methods, examining their quality in terms of information conservation. Our results indicate that clustering is always a good choice and preferable compared to grid-based aggregation. Although all the clustering methods we tested delivered a higher degree of information conservation than grid-based aggregation, the choice of clustering method is not arbitrary. Comparing outputs of a model fed with original data and a model fed with aggregated data, bottom-up clustering delivered the best results for the whole range of numbers of clusters tested. (C) 2013 Elsevier B.V. All rights reserved.  
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  ISSN 0304-3800 ISBN Medium Article  
  Area Expedition Conference  
  Notes TradeM Approved no  
  Call Number MA @ admin @ Serial 4488  
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Author Lembcke, F.; Lotze-Campen, H. openurl 
  Title Säkularstation und Wetterküche / Ernährung und Klimawandel Type Conference Article
  Year (down) 2012 Publication Abbreviated Journal  
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  Area Expedition Conference Evangelische Grundschule Potsdam, Klasse 6, 2012-12-19 to 2012-12-19  
  Notes Approved no  
  Call Number MA @ admin @ Serial 2599  
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