浙江省农业气候资源时空变化特征研究

基于浙江省20个气象站点1961-2010年的逐日气象数据，分析了浙江省农业气候资源的时空分布特征和变化规律。结果表明: 气候变暖背景下，浙江省气温显著升高，≥10℃积温增加，气温稳定≥20℃终日延迟，作物气候生长期增长。热量资源要素在空间上具有一定的纬向分布特征。1961-2010年浙江省日照时数年际间呈显著下降趋势，其中以金衢盆地与台州玉环地区减少最为明显；年均降水量增加，降水天数减少，雨日平均降水强度年际间呈明显上升趋势，以舟山及嘉兴-宁波-台州沿海增速最大。沿海岛屿及金衢地区的参考作物蒸散量较高，丽水地区最少。1961-2010年全省平均湿润指数为164，整体上表现出增加趋势。本研究结果可为浙江省农业种植区划、生产布局调整及制定气候变化对策提供参考。

Spatiotemporal characteristics of agricultural climate resources in Zhejiang Province#br#

 Based on the daily data from 1961 to 2010 collected from 20 meteorological stations in Zhejiang Province，the spatiotemporal characteristics of agricultural climate resources were analyzed. It was shown that annual mean temperature exhibited a significant increasing trend at 027℃ per decade. The accumulated temperature above 10℃ and temperature defined growing period were also increased， and the terminate date of 20℃ was delayed. The spatial distributions of heat resource presented a downward trend from north to south. The average sunshine hour was larger in the north than that in the south. During 1961-2010， sunshine hours showed a significant decreasing trend， especially in Jinqu Basin and Taizhou. The annual precipitation increased， while the rainy days decreased， which indicated that the rainfall intensity increased. ET0 analysis presented an obvious annual change characteristic of “decrease little fluctuation increase”. According to the spatial distribution， the high value center was located in the inland area and Jinqu Basin， while low value area was located in Lishui. The mean humid index during 1961-2010 was 164 with an increasing trend. The present research would provide reference for planting pattern adjustment to cope with climate change in Zhejiang Province.