Spatial Analysis of Agricultural Loss and Policy Review: A Case Study of Flood Potential Area in Yunlin, Chiayi, and Tainan Counties
Since agricultural production is highly correlated with climate and environment conditions, it is anticipated that climate change will have significant impacts on agricultural development. Extreme rainfall is one of the most common phenomenon of climate change, and often results in damage to agriculture. However, spatially explicit assessment of potential damage to agricultural production is still absent, especially that based on units of agricultural land. Yunlin, Chiayi, and Tainan are the major agricultural production regions in Taiwan. Therefore, a geographic information system (GIS), agricultural census data, agricultural land-use survey data, potential flood maps, and other GIS maps are applied in this research to investigate the spatial distribution and spatial heterogeneity of potential damage due to extreme rainfall. Our findings indicate that potential damage resulting from severe rainfall differs by crop as well as production region. Therefore, disaster relief schemes need to be tailored to cope with the various damage circumstances. Applications of agricultural disaster insurance, special production zones for various crops, and strengthening agricultural facilities are suggested.