Assessing the Spatial Distribution of Crop Production Using a Cross Entropy Method is popular PDF and ePub book, written by Liangzhi You and Stanley Wood in 2012, it is a fantastic choice for those who relish reading online the Social Science genre. Let's immerse ourselves in this engaging Social Science book by exploring the summary and details provided below. Remember, Assessing the Spatial Distribution of Crop Production Using a Cross Entropy Method can be Read Online from any device for your convenience.
Assessing the Spatial Distribution of Crop Production Using a Cross Entropy Method Book PDF Summary
While agricultural production statistics are reported on a geopolitical - often national - basis we often need to know the status of production or productivity within specific sub-regions, watersheds, or agro-ecological zones. Such re-aggregations are typically made using expert judgments or simple area-weighting rules. We describe a new, entropy-based approach to making spatially disaggregated assessments of the distribution of crop production. Using this approach tabular crop production statistics are blended judiciously with an array of other secondary data to assess the production of specific crops within individual "pixels" - typically 25 to 100 square kilometers in size. The information utilized includes crop production statistics, farming system characteristics, satellite-derived land cover data, biophysical crop suitability assessments, and population density. An application is presented in which Brazilian state level production statistics are used to generate pixel level crop production data for eight crops. To validate the spatial allocation we aggregated the pixel estimates to obtain synthetic estimates of municipio level production in Brazil, and compared those estimates with actual municipio statistics. The approach produced extremely promising results. We then examined the robustness of these results compared to short-cut approaches to spatializing crop production statistics and showed that, while computationally intensive, the cross-entropy method does provide more reliable estimates of crop production patterns.
Detail Book of Assessing the Spatial Distribution of Crop Production Using a Cross Entropy Method PDF
- Author : Liangzhi You and Stanley Wood
- Release : 20 September 2024
- Publisher : Intl Food Policy Res Inst
- ISBN : 978186723xxxx
- Genre : Social Science
- Total Page : 48 pages
- Language : English
- PDF File Size : 11,6 Mb
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