On the basis of summarizing the research on disaster risk at home and abroad, Shenyang, one of the cities with the most frequent meteorological disasters, was taken as an example. Cold chilling injury is one of the ma...On the basis of summarizing the research on disaster risk at home and abroad, Shenyang, one of the cities with the most frequent meteorological disasters, was taken as an example. Cold chilling injury is one of the major agricultural meteorological disasters, which poses a serious threat to the sustainable development of agriculture and food security in Jilin and Shenyang. Based on meteorological observation data of recent 65 years in Shenyang and microclimate monitoring data of agricultural facilities in two years, this paper makes statistical analysis by mathematical statistics and calculates the highest outdoor temperature, the lowest indoor air temperature and the highest ceiling temperature according to the meteorological grade index of agricultural facilities’ low temperature chilling damage, low temperature and other meteorological elements of grade indicators, analysis of greenhouse production trend of greenhouse climate change, and to discuss the relationship between temperature inside and outside the greenhouse and the facility microclimate conditions in agricultural cold weather disastrous and early warning services. The results showed that in the 21st century, the number of days with low temperature of ≤-20°C increased significantly compared with those in the 1970s, 1980s and 1990s. The risk of low temperature chilling injury in facility agriculture in Shenyang was dominated by mild and moderate low temperature risk. Shenyang low temperature cold damage warning services standards to reduce the impact of chilling injury on agricultural facilities and development.展开更多
文摘On the basis of summarizing the research on disaster risk at home and abroad, Shenyang, one of the cities with the most frequent meteorological disasters, was taken as an example. Cold chilling injury is one of the major agricultural meteorological disasters, which poses a serious threat to the sustainable development of agriculture and food security in Jilin and Shenyang. Based on meteorological observation data of recent 65 years in Shenyang and microclimate monitoring data of agricultural facilities in two years, this paper makes statistical analysis by mathematical statistics and calculates the highest outdoor temperature, the lowest indoor air temperature and the highest ceiling temperature according to the meteorological grade index of agricultural facilities’ low temperature chilling damage, low temperature and other meteorological elements of grade indicators, analysis of greenhouse production trend of greenhouse climate change, and to discuss the relationship between temperature inside and outside the greenhouse and the facility microclimate conditions in agricultural cold weather disastrous and early warning services. The results showed that in the 21st century, the number of days with low temperature of ≤-20°C increased significantly compared with those in the 1970s, 1980s and 1990s. The risk of low temperature chilling injury in facility agriculture in Shenyang was dominated by mild and moderate low temperature risk. Shenyang low temperature cold damage warning services standards to reduce the impact of chilling injury on agricultural facilities and development.
