Modeling the spatial distribution of crop sequences at a large regional scale using land-cover survey data: A case from France
Identifieur interne : 000023 ( PascalFrancis/Corpus ); précédent : 000022; suivant : 000024Modeling the spatial distribution of crop sequences at a large regional scale using land-cover survey data: A case from France
Auteurs : YING XIAO ; Catherine Mignolet ; Jean-François Mari ; Marc BenoitSource :
- Computers and electronics in agriculture [ 0168-1699 ] ; 2014.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Assessing the environmental impacts of agricultural production systems requires spatially explicit information regarding cropping systems. Projecting changes in agricultural land use that are caused by changes in land management practices for analyzing the performance of land activity-related policies, such as agricultural policies, also requires this type of data for model inputs. Crop sequences, which are vital and widely adopted agricultural practices, are difficult to directly detect at a regional scale. This study presents innovative stochastic data mining that was aimed at describing the spatial distribution of crop sequences at a large regional scale. The data mining is performed by hidden Markov models and an unsupervised clustering analysis that processes sequentially observed (from 1992 to 2003) land-cover survey data on the French mainland named Teruti. The 2549 3-year crop sequences were first identified as major crop sequences across the entire territory, which included 406 (merged) agricultural districts, using hidden Markov models. The 406 (merged) agricultural districts were then grouped into 21 clusters according to the similarity of the probabilities of occurrences of major 3-year crop sequences using hierarchical clustering analysis. Four cropping systems were further identified: vineyard-based cropping systems, maize monoculture and maize/wheat-based cropping systems, temporary pasture and maize-based cropping systems and wheat and barley-based cropping systems. The modeling approach that is presented in this study provides a tool to extract large-scale cropping patterns from increasingly available time series data on land-cover and land-use. With this tool, users can (a) identify the homogeneous zones in terms of fixed-length crop sequences across a large territory, (b) understand the characteristics of cropping systems within a region in terms of typical crop sequences, and (c) identify the major crop sequences of a region according to the probabilities of occurrences.
Notice en format standard (ISO 2709)
Pour connaître la documentation sur le format Inist Standard.
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Format Inist (serveur)
NO : | PASCAL 14-0083732 INIST |
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ET : | Modeling the spatial distribution of crop sequences at a large regional scale using land-cover survey data: A case from France |
AU : | YING XIAO; MIGNOLET (Catherine); MARI (Jean-François); BENOIT (Marc) |
AF : | INRA SAD UPR 055 ASTER, 662 Avenue Louis Buffet/88500 Mirecourt/France (1 aut., 2 aut., 4 aut.); Université de Lorraine, LORIA, UMR 7503/54506 Vandoeuvre-lès-Nancy/France (3 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Computers and electronics in agriculture; ISSN 0168-1699; Coden CEAGE6; Pays-Bas; Da. 2014; Vol. 102; Pp. 51-63; Bibl. 3/4 p. |
LA : | Anglais |
EA : | Assessing the environmental impacts of agricultural production systems requires spatially explicit information regarding cropping systems. Projecting changes in agricultural land use that are caused by changes in land management practices for analyzing the performance of land activity-related policies, such as agricultural policies, also requires this type of data for model inputs. Crop sequences, which are vital and widely adopted agricultural practices, are difficult to directly detect at a regional scale. This study presents innovative stochastic data mining that was aimed at describing the spatial distribution of crop sequences at a large regional scale. The data mining is performed by hidden Markov models and an unsupervised clustering analysis that processes sequentially observed (from 1992 to 2003) land-cover survey data on the French mainland named Teruti. The 2549 3-year crop sequences were first identified as major crop sequences across the entire territory, which included 406 (merged) agricultural districts, using hidden Markov models. The 406 (merged) agricultural districts were then grouped into 21 clusters according to the similarity of the probabilities of occurrences of major 3-year crop sequences using hierarchical clustering analysis. Four cropping systems were further identified: vineyard-based cropping systems, maize monoculture and maize/wheat-based cropping systems, temporary pasture and maize-based cropping systems and wheat and barley-based cropping systems. The modeling approach that is presented in this study provides a tool to extract large-scale cropping patterns from increasingly available time series data on land-cover and land-use. With this tool, users can (a) identify the homogeneous zones in terms of fixed-length crop sequences across a large territory, (b) understand the characteristics of cropping systems within a region in terms of typical crop sequences, and (c) identify the major crop sequences of a region according to the probabilities of occurrences. |
CC : | 002A32C04A |
FD : | Modélisation; Répartition spatiale; Echelle grande; Echelon régional; Occupation sol; Système culture; Modèle Markov caché; France; Terre agricole |
FG : | Europe |
ED : | Modeling; Spatial distribution; Large scale; Regional scope; Land use; Cropping system; Hidden Markov model; France; Farmland |
EG : | Europe |
SD : | Modelización; Distribución espacial; Escala grande; Escala regional; Ocupación terreno; Sistema cultural; Modelo Markov oculto; Francia; Tierra agrícola |
LO : | INIST-21007.354000506123820060 |
ID : | 14-0083732 |
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Pascal:14-0083732Le document en format XML
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