关键词: 芒果, 寒冻害, 危险性区划, 华南芒果种植区, GIS

Abstract: Based on the observation data of 115 weather stations of mango planting areas in South China (Guangdong, Guangxi and Fujian) from 1961 to 2016, combined with mango cold and freezing injury index, the weighted comprehensive evaluation method was used to determine the cold and freezing injury hazard index of each meteorological station in the planting area, and then established a multiple linear regression model between the cold and freezing injury hazard index and geographical factors. Finally, the regionalization of cold and freezing injury to mango in South China was made based on GIS technology. The results showed that there was a close relationship between the risk of cold and freezing injury and geographical factors in South China mango planting areas, and an overall trend was that the risk of mango cold and freezing injury gradually increased from coast to inland. In addition, with the increase of latitude and altitude, the risk of cold and freezing injury gradually increased from south to north. The slight risk areas were mainly distributed in the southern coastal areas and the low altitude areas of some inland cities of South China mango planting areas, accounting for 56.85% of the planting area, which was suitable for large-scale mango planting. The moderate risk areas were mainly distributed in the inland low and middle altitude areas of the mango planting area in South China, and the high latitude coastal areas in the north, accounting for 37.03% of the planting area. Furthermore, the severe and over severe hazard areas were mainly distributed in the inland high altitude areas of mango planting areas in South China, accounting for 6.12% of the planting area. Through the verification of historical disaster and annual production information of each county, the zoning result was consistent well with the actual situation. The results of this study could provide reference for the optimal layout and disaster prevention and mitigation of mango in South China mango planting area.

Key words: Mango, Cold and freezing injury, Risk zoning, South China, Geographical Information System