Use of agro-climatic zones to upscale simulated crop yield potential
Yield gap analysis, which evaluates magnitude and variability of difference between crop yield potential (Yp) or water limited yield potential (Yw) and actual farm yields, provides a measure of untapped food production capacity. Reliable location-specific estimates of yield gaps, either derived from...
| Autores principales: | , , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2013
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/52142 |
| _version_ | 1855518425521061888 |
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| author | Wart, Justin van Bussel, Lenny G. J. van Wolf, Joost Licker R Grassini, Patricio Nelson, A. Boogaard, H. Gerber J Mueller ND Claessens, Lieven Ittersum, Martin K. van Cassman, Kenneth G. |
| author_browse | Boogaard, H. Bussel, Lenny G. J. van Cassman, Kenneth G. Claessens, Lieven Gerber J Grassini, Patricio Ittersum, Martin K. van Licker R Mueller ND Nelson, A. Wart, Justin van Wolf, Joost |
| author_facet | Wart, Justin van Bussel, Lenny G. J. van Wolf, Joost Licker R Grassini, Patricio Nelson, A. Boogaard, H. Gerber J Mueller ND Claessens, Lieven Ittersum, Martin K. van Cassman, Kenneth G. |
| author_sort | Wart, Justin van |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Yield gap analysis, which evaluates magnitude and variability of difference between crop yield potential (Yp) or water limited yield potential (Yw) and actual farm yields, provides a measure of untapped food production capacity. Reliable location-specific estimates of yield gaps, either derived from research plots or simulation models, are available only for a limited number of locations and crops due to cost and time required for field studies or for obtaining data on long-term weather, crop rotations and management practices, and soil properties. Given these constraints, we compare global agro-climatic zonation schemes for suitability to up-scale location-specific estimates of Yp and Yw, which are the basis for estimating yield gaps at regional, national, and global scales. Six global climate zonation schemes were evaluated for climatic homogeneity within delineated climate zones (CZs) and coverage of crop area. An efficient CZ scheme should strike an effective balance between zone size and number of zones required to cover a large portion of harvested area of major food crops. Climate heterogeneity was very large in CZ schemes with less than 100 zones. Of the other four schemes, the Global Yield Gap Atlas Extrapolation Domain (GYGA-ED) approach, based on a matrix of three categorical variables (growing degree days, aridity index, temperature seasonality) to delineate CZs for harvested area of all major food crops, achieved reasonable balance between number of CZs to cover 80% of global crop area and climate homogeneity within zones. While CZ schemes derived from two climate-related categorical variables require a similar number of zones to cover 80% of crop area, within-zone heterogeneity is substantially greater than for the GYGA-ED for most weather variables that are sensitive drivers of crop production. Some CZ schemes are crop-specific, which limits utility for up-scaling location-specific evaluation of yield gaps in regions with crop rotations rather than single crop species. |
| format | Journal Article |
| id | CGSpace52142 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace521422024-08-27T10:35:09Z Use of agro-climatic zones to upscale simulated crop yield potential Wart, Justin van Bussel, Lenny G. J. van Wolf, Joost Licker R Grassini, Patricio Nelson, A. Boogaard, H. Gerber J Mueller ND Claessens, Lieven Ittersum, Martin K. van Cassman, Kenneth G. climate agriculture crop yield yield gap food security Yield gap analysis, which evaluates magnitude and variability of difference between crop yield potential (Yp) or water limited yield potential (Yw) and actual farm yields, provides a measure of untapped food production capacity. Reliable location-specific estimates of yield gaps, either derived from research plots or simulation models, are available only for a limited number of locations and crops due to cost and time required for field studies or for obtaining data on long-term weather, crop rotations and management practices, and soil properties. Given these constraints, we compare global agro-climatic zonation schemes for suitability to up-scale location-specific estimates of Yp and Yw, which are the basis for estimating yield gaps at regional, national, and global scales. Six global climate zonation schemes were evaluated for climatic homogeneity within delineated climate zones (CZs) and coverage of crop area. An efficient CZ scheme should strike an effective balance between zone size and number of zones required to cover a large portion of harvested area of major food crops. Climate heterogeneity was very large in CZ schemes with less than 100 zones. Of the other four schemes, the Global Yield Gap Atlas Extrapolation Domain (GYGA-ED) approach, based on a matrix of three categorical variables (growing degree days, aridity index, temperature seasonality) to delineate CZs for harvested area of all major food crops, achieved reasonable balance between number of CZs to cover 80% of global crop area and climate homogeneity within zones. While CZ schemes derived from two climate-related categorical variables require a similar number of zones to cover 80% of crop area, within-zone heterogeneity is substantially greater than for the GYGA-ED for most weather variables that are sensitive drivers of crop production. Some CZ schemes are crop-specific, which limits utility for up-scaling location-specific evaluation of yield gaps in regions with crop rotations rather than single crop species. 2013-03 2014-12-16T06:37:35Z 2014-12-16T06:37:35Z Journal Article https://hdl.handle.net/10568/52142 en Open Access Elsevier Van Wart J, van Bussel LGJ, Wolf J, Licker R, Grassini P, Nelson A, Boogaard H, Gerber J, Mueller ND, Claessens L, van Ittersum MK, Cassman KG. 2013. Use of agro-climatic zones to upscale simulated crop yield potential. Field Crops Research 143:44-55. |
| spellingShingle | climate agriculture crop yield yield gap food security Wart, Justin van Bussel, Lenny G. J. van Wolf, Joost Licker R Grassini, Patricio Nelson, A. Boogaard, H. Gerber J Mueller ND Claessens, Lieven Ittersum, Martin K. van Cassman, Kenneth G. Use of agro-climatic zones to upscale simulated crop yield potential |
| title | Use of agro-climatic zones to upscale simulated crop yield potential |
| title_full | Use of agro-climatic zones to upscale simulated crop yield potential |
| title_fullStr | Use of agro-climatic zones to upscale simulated crop yield potential |
| title_full_unstemmed | Use of agro-climatic zones to upscale simulated crop yield potential |
| title_short | Use of agro-climatic zones to upscale simulated crop yield potential |
| title_sort | use of agro climatic zones to upscale simulated crop yield potential |
| topic | climate agriculture crop yield yield gap food security |
| url | https://hdl.handle.net/10568/52142 |
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