关键词: 铁皮石斛, 寒冻害, 危险性区划, GIS, 福建省

Abstract: Based on the data of daily minimum temperature in winter from 1971 to 2018 from 66 meteorological stations in Fujian, we established hazard division index of cold and freezing damage to Dendrobium officinale and a small-grid spatial prediction model of hazard index to cold and freezing damage, based on geographic information using the AHP method, entropy weight method, and ArcGIS spatial analysis method. We further conducted a hazard zoning of cold and freezing damage to D. officinale planted in the understory in Fujian Province. The results showed that the mild hazard areas of cold and freezing damage to D. officinale were mainly distributed in the low altitude areas along the southeast coast of Fujian, and the moderate hazard areas were mainly distributed in the middle and low altitude areas along the central and southern Nanping, the central and eastern  Sanming, and the southwest and east of Longyan. The severe and above hazard areas were mainly distributed in the high altitude areas along the north of Nanping, the northwest of Ningde, and the central Longyan. The division results were well consistent with the actual situations in field verification. Our results could provide decision reference for the planting layout and disaster prevention and mitigation of D. officinale in Fujian Province.

Key words: Dendrobium officinale, cold and freezing damage, hazard division, GIS, Fujian Province.