| 甘肃省近55年来积温变化趋势特征分析 |
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| 引用本文： | 王国强,张勃,张耀宗,唐敏,马彬. 甘肃省近55年来积温变化趋势特征分析[J]. 水土保持研究, 2016, 23(5): 193-198 |
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| 作者姓名： | 王国强 张勃 张耀宗 唐敏 马彬 |
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| 作者单位： | 西北师范大学 地理与环境科学学院, 兰州 730070 |
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| 基金项目： | 国家自然科学基金(41561024)，高校博士学科点专项科研资助项目(20136203110002)，生态经济学省级重点学科(5002-021) |
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| 摘 要： | 选用甘肃省27个资料序列较长的气象站点1960—2014年日平均气温资料，运用线性倾向估计、M-K检验等气候统计诊断方法，对近55年来甘肃省≥0℃和≥10℃积温的时间变化趋势、突变特征进行了检测分析，采用基于ArcGIS的混合插值法对其空间分布特征及变化趋势进行了分析。结果表明:（1）甘肃省稳定通过≥0℃和≥10℃的积温空间分布总体呈现“自东南向西北，由平川、河谷、盆地向高原和高山逐渐减少”的布局；（2）1960—2014年稳定通过≥0℃和≥10℃的积温分别以66℃/10 a和64.75℃/10 a的倾向率呈显著上升趋势，并均在1998年发生了突变，突变前后积温增加幅度的空间分布总体呈“随纬度增高由西南向东北增大”的格局；（3）气候带的分布在气候变暖形势下呈现出整体向高海拔扩张和高纬度北移的趋势，具体表现为北亚热带、中温带以及暖温带区域逐渐扩大，高原气候带区域减少。
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| 关 键 词： | 甘肃省 积温 气候带 特征分析 |
Variation Tendency of Accumulated Temperature in Gansu Province in Recent 55 Years |
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| WANG Guoqiang,ZHANG Bo,ZHANG Yaozong,TANG Min,MA Bin. Variation Tendency of Accumulated Temperature in Gansu Province in Recent 55 Years[J]. Research of Soil and Water Conservation, 2016, 23(5): 193-198 |
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| Authors: | WANG Guoqiang ZHANG Bo ZHANG Yaozong TANG Min MA Bin |
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| Affiliation: | College of Geography and Environment, Northwest Normal University, Lanzhou 730070, China |
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| Abstract: | Based on the daily average air temperature date obtained from 27 meteorological stations in Gansu Province during the period from 1960 to 2014, the temporal and abrupt change characteristic of accumulated temperature steadily above 0℃ and 10℃ over the recent 55 years were identified by using linear trend estimation and Mann-Kendall test, ArcGIS-based mixed interpolation was used to analyze the spatiotemporal change of accumulated temperature steadily above 0℃ and 10℃ in 1960—2014, before and after their discontinuity ascension in recent 55 years. The results show that:(1) the spatial distribution of performance of accumulated temperature steadily above 0℃ and 10℃ gradually reduce from southeast to northwest, and from the plains, valleys, to plateaus and mountain basin in Gansu Province; (2) the accumulated temperature steadily above 0℃ and 10℃ increased significantly along with climate warming, and the regression coefficient of accumulated temperature was 66℃/decade and 64.75℃/decade, these changes experienced significant mutation in 1998 whereby the rate of change before and after accumulated temperature steadily above 0℃ and 10℃ was different in different areas that increases with increase of latitude from southwest to northeast; (3) the change of climate zones expanded to high altitude and latitude along with climate warming, North Subtropical Zone and Temperate Zone gradually expanded, and Plateau Climate Zone showed the decreasing trend. |
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| Keywords: | Gansu Province accumulated temperature climatic zones spatiotemporal characteristics |
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