Abstract

Risk of tea plant heat injury (RTHI) varies with geographical factors. To get a better understanding of the geographical factors determining RTHI variability, support vector machines were used to analyze relationships between RTHI and selected geographical factors. The results showed nonlinear relationships between RTHI and geographical factors. High values of RTHI were found in central Zhejiang province. In mountainous areas, RTHI values decreased with altitude, with values of 0 at altitudes above 530 m. Because of low altitude and surrounding mountains preventing hot air from circulating between the inside of basin areas and outside, RTHI values were high in the middle of basins. Water bodies with larger surface areas reduced RTHI values. Our results suggest that RTHI increases with climate warming; therefore, it is necessary to take into account local geographical factors and select suitable tea plant planting and management techniques to reduce the impact of heat waves on tea production.

摘要

茶树热伤害的风险因地理因素而异。为了更好地了解决定RTHI变异性的地理因素，使用支持向量机分析RTHI与选定地理因素之间的关系。结果表明，RTHI与地理因素之间存在非线性关系。在浙江省中部发现了较高的RTHI值。在山区，RTHI值随海拔高度而降低，在海拔530 m以上时，RTHI值为0。由于低海拔和周围的山脉阻止热空气在盆地内部和外部之间流通，因此盆地中部的RTHI值较高。具有较大表面积的水体降低了RTHI值。我们的结果表明RTHI随着气候变暖而增加。因此，