| 摘要: |
| 为向全球变暖背景下的陕西省秦岭地区生态环境建设和区域农业发展提供科学依据,采集1961—2010年该区域71个气象台站的资料,采用气象数据小网格推算、Mann-kendall突变检验、Morlet小波分析法,分析了秦岭南北近50年来稳定通过≥0 ℃的热量资源的积温、初日、终日和持续日数的变化特征,结果表明:近50年来秦岭南北≥0 ℃的积温增加、初日提前、终日推迟和持续日数延长,除秦岭北部≥0 ℃初日变化速度慢于秦岭南部外,秦岭北部≥0 ℃的积温、终日和持续时间变化速度快于秦岭南部;秦岭南北≥0 ℃的积温和持续日数发生由少到多突变的年份分别为2003和1997年,秦岭南北≥0 ℃初日发生由推迟到提前的突变年份为1997年,秦岭南北≥0 ℃终日发生由提前到推迟的突变年份为1972和1976年。秦岭地区≥0 ℃积温的空间变化相似,整体呈增加趋势。秦岭南北初日和持续日数具有相同的周期,秦岭南北的终日具有相同的短周期,而秦岭南北的积温具有相同的长周期。 |
| 关键词: ≥0 ℃热量资源 秦岭地区 时空变化 统计分析 ArcGIS |
| DOI：10.11841/j.issn.1007-4333.2015.01.028 |
| 投稿时间：2014-04-27 |
| 基金项目:国家自然科学基金资助项目(31070293); 国家"十一五"科技支撑计划项目(2006BAI06A13-06) |
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| Patiotemporal distribution of thermal resources over northern and southern regions of the Qinling Mountains in recent 50 years |
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GAO Bei1,2, WEI Hai-yan1, GUO YAN-long1, DONG JIN-fang2
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| (1.College of Environment and Tourism Science, Shanxi Normal University, Xi'an 710062, China;2.Remote Sensing Information Center for Agriculture of Shaanxi Privince, Xi'an 710015, China) |
| Abstract: |
| Under the background of global warming,in order to provide scientific basis for ecological environment construction and regional agricultural development of Qinling Mountains in Shaanxi.Based on the daily average temperature data collected from 71 weather stations in Qinling Mountains from 1961 to 2010,the methods like meteorological data of spatial analysis,Mann-kendall and Morelt wavelet analysis are used to analyze the thermal resources variation of accumulative temperature,interval days,first day and last day,with which daily temperature steadily above 0 ℃.The aim was to provide scientific evidence for the regional ecological environmental construction and agriculture development.The results showed that the interval days and accumulated temperature of the daily temperature above 0 ℃ steadily increased.The first day was early,but the last day was delayed.In addition,the changing speed of the first day in the northern Qinling mountain was slower than that of the southern region.The rate of the internal days,last day and accumulative temperature of daily temperature above 0 ℃ in northern Qingling mountains were quicker than those in southern area.Variation of the internal days,last day and accumulated temperature of daily temperature above 0 ℃ in Northern Qinling Mountain were higher than those of South part.However,the first day of daily temperature above 0 ℃ in Northern Qinling Mountain was lower than that of south.The abrupt change of the internal days,accumulated temperature,first day and last day of daily temperature above 0 ℃ in Northern Qinling Mountain appeared in 1997,1997,1972 and 1997 respectively.In contrast,they appeared in 2003,1997,1976 and 1997 respectively in Southern Qinling Mountain.The accumulated temperature of ≥0 ℃ in Qinling Mountain had similar spatial variation and increasing trend. |
| Key words: thermal resources of daily average temperature above 0 ℃ Qinling Mountains spatial-temporal variation statistic analysis ArcGIS |
