朝阳地区近30a降水时空变化及对农业生产的影响

Chaoyang District Nearly 30 a Precipitation Temporal Variation Characteristics and Its Impact on Agricultural Production

利用气候倾向率分析朝阳地区近30 a的降水时空变化特征及对农业生产的影响。结果表明,近30 a朝阳地区南部、北部年降水均呈上升趋势,南部地区气候倾向率为21.9 mm/10 a,北部为0.3 mm/10 a,上升趋势明显不同;南部地区各季节降水变化均呈上升趋势,北部地区秋季呈上升趋势,其他季节均呈下降趋势;朝阳地区年代间降水差异显著。掌握降水时空变化趋势,为区域农业产业结构调整及防灾减灾工程等提供决策气象依据。

Using climate tendency rate analysis of Chaoyang district for nearly 30 a, precipitation temporal variation characteristics was conducted and its impact on agricultural production studied. Results show that the nearly 30 a precipitation tendency in southern and northern Chaoyang district are rising, southern area climate tendency rate 21.9 mm/10 a and north of 0.3mm/10 a, showing a significantly different rising tendency. In southChaoyang each seasonal precipitation change is on the rise, the northern autumn is on the rise, other seasons falling. Chaoyang district has significant rainfall difference. To master precipitation space-time change trend for regional agricul- tural industrial restructuring to provide meteorological decision-making basis for disaster prevention and mitigation engineering.