Several climatic indices have been contributed by the scientific community to analyse climate change implications on the environment, society, and economic growth. In this study, daily temperature time series for minimum and maximum temperatures were used to compute 12 extreme climate indices and 2 plant heat resource indices. The indices for the historical period 1941–2016 are computed from the observed temperature records at 10 climate stations within the Limpopo province in South Africa. The time series for the annual heat-related indices were analysed to obtain the climatology and trends for each of the indices per station. In general, statistically significant warming trends, accounting for at least 5 out of the 10 stations for all indices, were observed over the 65-year period. These are except statistically significant cooling trends observed for a few geographically high-lying stations that constitute at least 1 station. The recorded trends in growing degree days and heat stress indices suggest that the majority of stations experienced a gain in the conditions conducive for native plants to grow, while for crops sensitive to temperatures from 25 to 35 °C, the conditions went through a deterioration during the period.

科学界提供了一些气候指数来分析气候变化对环境，社会和经济增长的影响。在这项研究中，使用最低和最高温度的每日温度时间序列来计算12个极端气候指数和2个植物热资源指数。1941–2016年历史时期的指数是根据南非林波波省内10个气候站的观测温度记录计算得出的。分析与年度热量相关的指数的时间序列，以获得每站每个指数的气候和趋势。一般而言，在65年期间，观察到了统计学上显着的变暖趋势，占所有指数10个站中的至少5个。这些是对至少构成1个站点的几个地势较高的站点观察到的统计上明显的降温趋势。所记录的生长日数和热应力指数的趋势表明，大多数气象站都经历了有利于本地植物生长的条件的增加，而对温度在25至35°C敏感的农作物的生长条件在时期。