Abstract: Based on the observational data at 59 weather stations in Jiangsu province from 1961 to 2010, the temporal and spatial evolution features of agroclimatological resources were analyzed using methods of a trend analysis and a Mann-Kendall test. The results show that the total amount of agroclimatological resources such as heat, water and sunshine changes significantly. For example, the annual average temperature is in an increasing trend with a rate of 0.29 ℃ per decade, so is the annual accumulated temperature (≥0 ℃ and ≥10 ℃) and their rates are 101.1 ℃ and 83.4 ℃ per decade, respectively; frost-free season prolongs slightly; rainfall is in a slightly increasing trend with 9.1 mm per decade; annual sunshine duration decreases significantly with a rate of -65.4 hours per decade. The abrupt changes of agroclimatological resources mainly appear in 1990s. The variation of agroclimatological resources will affect agricultural general layout and development planning of Jiangsu province, so the corresponding planning should be established in order to ensure sustainable development of agriculture in the future.

Key words: Jiangsu province, Agroclimatological resources, Mann-Kendall test