新疆巴楚浅层地温变化对春季物候的影响

本文利用1961-2010年巴楚0～40cm逐月平均地温资料，采用气候倾向率和累积距平气候统计方法，探讨近50a巴楚县不同深度的地温变化特征，研究巴楚县气候变化对当地农、林果业生产以及生态环境的影响。结果表明：这半世纪来，巴楚县浅层地温的年和季节平均值呈现出不同程度的上升趋势，其中40cm的年升温率和夏季的升温率最大。近10a来，巴楚县地温明显升高，浅层地温的年、季节平均或平均最高、最低等均明显高于前40a。随着巴楚县地温的上升，年极大冻土深度的下降趋势也很明显，当地冬小麦返青期和林果业的树木萌动期提前。

Soil temperature change at shallow layer and Correlation Analysis in Bachu county of Xinjiang Uygur Autonomous Region in Recent Half Century

In this paper, the variation trend of decade, annual and seasonal mean soil temperatures at shallow layers in Bachu were investigated the period from 1961- to 2010 by using modern statistical diagnostic methods such as linear trend analysis and accumulated variance methods. The results shows that the annual and seasonal soil temperatures at shallow layers had a significant increasing trend, and specifically at a depth of 40cm and summer in past 50 years in Bachu. Especially nearly by 10 years, the main soil temperature of Bachu was increased significantly, annual and seasonal average mean soil temperatures, average maximum and minimum temperature at shallow layers were significantly higher than the past 40 years. Following with increased of soil temperature the yearly maximum depth of frozen soil was decreased, greening of winter wheat and bud opening of woody plants were bring forward significantly.