周宁县气候变化特征及其对茶叶生长的影响

Impact of climate change on tea growth in Zhouning County

为给闽东茶区应对气候变化及评估提供参考依据,选取闽东主茶区周宁县1962—2016年茶叶生长期内主要气候因子(≥10℃积温及期间雨量、日照时数等)和茶叶生产方面的数据资料,应用相关性、变异系数、Mann检验等气候统计方法,分析周宁县主要气候因子变化特征及对茶叶生长影响.结果表明:近55年周宁县热量呈显著增加趋势,日照呈显著减少趋势,降水呈增加趋势但不显著,光、温、水气候条件变化有利于该县茶叶产量和品质提高,但也容易引发病虫害多发、水土流失、干旱等一些问题,可见,气候变化对茶叶生长具有重要影响.

Climate change has significant impact on tea growth. Selecting the main climatic factors（≥10 ℃accumulated temperature and rainfall, sunshine hours during tea growth, etc.） and the tea production data of main tea area in Zhouning County of northeastern Fujian Province in 1962-2016, using correlation, coefficient of variation, Mann test statistical methods, etc., the characteristics of the main climatic factors and the e ffect on the growth of tea in Zhouning County were analysed.The results showed that the heat of Zhouning County increased significantly in the last 55 years, the sunshine showed a significant decreasing trend, the precipitation showed an increasing trend but not significant. The changes of sunshine, heat and precipitation of climate conditions are beneficial to tea production and quality improvement. But they also lead to more pests and diseases, soil erosion, drought and other problems. The research will provide reference for coping with climate change and risk assessment of tea area in northeastern Fujian Province.