Abstract:

To quantitatively assess the climatic adaptability of Camellia oleifera production in Shaoyang, an evaluation index system of climatic condition for Camellia oleifera production was constructed from three aspects of climatic suitability, climatic condition and meteorological disasters. Based on the evaluation index system, climate condition and disaster risk of Camellia oleifera production were analyzed with daily temperature, precipitation and sunshine history data from 1961 to 2018. The results showed that during 1961-2018, more than 95% of the years had the annual temperature, active accumulated temperature above 10℃, average temperature of the coldest and hottest months, and annual relative humidity in the optimum range. The average temperature in Camellia oleifera flower bud differentiation stage and flowering stage in all years in Shaoyang were in the appropriate range. During the peak period of fruit enlargement and stage of oil transformation, the number of years with suitable precipitation reached 93.1% and 84.5%, respectively. The main meteorological disasters for Camellia oleifera production in Shaoyang included high temperature, drought, freezing damage at low temperature and continuous rain. Risks of these disasters were low, and under the background of climate change, these disasters had a mitigating trend.

Key words: Camellia oleifera, Climate Condition, High Temperature, Drought, Freezing Damage at Low Temperature, Continuous Rain, Shaoyang County