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Author  |
Dietrich, J.P.; Popp, A.; Lotze-Campen, H. |
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Title |
Reducing the loss of information and gaining accuracy with clustering methods in a global land-use model |
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Journal Article |
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Year |
2013 |
Publication |
Ecological Modelling |
Abbreviated Journal |
Ecol. Model. |
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Volume |
263 |
Issue |
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Pages |
233-243 |
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Keywords |
aggregation; downscaling; clustering; information conservation; land use model; scale; scales; agriculture; simulation; dynamics; pattern |
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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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English |
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0304-3800 |
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TradeM |
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no |
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Call Number |
MA @ admin @ |
Serial |
4488 |
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Author |
Dirnböck, T.; Bezák, P.; Dullinger, S.; Haberl, H.; Lotze-Campen, H.; Mirtl, M.; Peterseil, J.; Redpath, S.; Singh, S.J.; Travis, J.; Wijdeven, S.M.J. |
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Title |
Critical Scales for Long-Term Socio-ecological Biodiversity Research |
Type |
Book Chapter |
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Year |
2013 |
Publication |
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Abbreviated Journal |
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Pages |
123-138 |
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Keywords |
TradeM |
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Springer |
Place of Publication |
Dordrecht |
Editor |
Singh, S.J.; Haberl, H.; Chertow, M.; Mirtl, M.; Schmid, M. |
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Long Term Socio-Ecological Research |
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Human-environment interactions (2) |
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Call Number |
MA @ admin @ |
Serial |
2390 |
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Author |
Dono, G. |
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Title |
Cross-Cutting Issues in Hot Spot Areas |
Type |
Conference Article |
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Year |
2013 |
Publication |
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TradeM |
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MACSUR TradeM Workshop on Global Food Security Challenges – European Research approaches. Leibniz Centre for Agricultural Landscape Research (ZALF), Müncheberg, Germany, 2013-11-18 to 2013-11-20 |
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MA @ admin @ |
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2395 |
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Author |
Dono, G. |
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Title |
Climate change scenarios and simulations on adaptation of Mediterranean agriculture: preliminary results of productive and economic impact |
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Conference Article |
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Year |
2013 |
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TradeM |
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MACSUR TradeM Workshop on Global Food Security Challenges – European Research approaches. Leibniz Centre for Agricultural Landscape Research (ZALF), Müncheberg, Germany, 2013-11-18 to 2013-11-20 |
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no |
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Call Number |
MA @ admin @ |
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2394 |
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Author |
Dono, G. |
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Title |
Storylines regarding climate change and scenarios |
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Report |
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Year |
2013 |
Publication |
FACCE MACSUR Reports |
Abbreviated Journal |
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Volume |
1 |
Issue |
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Pages |
D-T3.2 |
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WP3 develops the tools for assessing the productive and economic impact of climate change and the potential of mitigation and adaptation strategies. This is achieved by focussing, along with CropM and LiveM, on significant crossing issues in specific geographical areas, natural and human resources, and farming systems. Following, the storylines regarding climate change and scenarios in the hot-spots. No Label |
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no |
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Call Number |
MA @ admin @ |
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2264 |
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