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邓晨晖,白红英,翟丹平,高山,黄晓月,孟清,贺映娜.气候变化背景下1964-2015年秦岭植物物候变化.生态学报,2017,(23).http://dx.doi.org/10.5846/stxb201702200277  
气候变化背景下1964-2015年秦岭植物物候变化
The plant phenological variation of the Qinling Mountains under the Background of Climate Change during 1964-2015
投稿时间:2017-02-20  修订日期:2017-07-21
DOI: 10.5846/stxb201702200277
关键词植物物候  变化特征  突变  差异性  秦岭地区
Key WordsPlant phenology  Variation characteristics  Abrupt change of phenophase  Difference  the Qinling region
基金项目国家林业公益性行业科研专项(201304309)
作者单位E-mail
邓晨晖 西北大学 chenhuisnow@126.com 
白红英 西北大学 hongyingbai@163.com 
翟丹平 西北大学  
高山 西安市气象局  
黄晓月 西北大学  
孟清 西北大学  
贺映娜 西北大学  
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摘要:
以1964-2015年物候观测数据为基础,选取17种含乔木、灌木及藤本树种为研究对象,分析探讨了气候变化背景下秦岭地区植物物候变化规律及其差异性。结果表明:①52年来,秦岭地区物候始期普遍呈提前趋势,提前速率1.2d/10a,物候末期普遍呈推迟趋势,推迟速率3.5d/10a,物候生长期普遍延长;②物候突变发生于20世纪80年代,始期于1985年,末期于1984年。突变后,物候特征发生了显著变化,始期的提前速率较突变前显著加快,末期由突变前的提前趋势转变为极显著的推迟趋势,且变化速率和显著性均高于始期;始期与末期变化均表现出“趋同效应”;物候年代际变化趋势显示,始期自2001-2005年起提前速率减缓,植物对气候变化的响应表现出适应性及滞后性。③秦岭物候变化存在树种差异,3大类树种始期的提前速率呈藤本、乔木、灌木依次增大,而末期的推迟速率则呈藤本、灌木、乔木依次减小。④秦岭物候变化存在南北差异,北坡始期的提前速率均高于南坡,而南坡末期的推迟速率均高于北坡。
Abstract:
Abstract: Under the background of global change, plant phenology research has become a hot topic in research of global climate change. Mountain was considered an outpost of global change, Qinling mountains as a unique geographical unit in our country for its ecologically sensitive and fragile, its temperature presented a significant upward trend in this region in nearly half a century. Based on the phenological observation datas during 1964-2015, 17 tree species including arbors, shrubs and vines were selected as the research object, the paper analyzed and discussed the change rule and the difference of plant phenology under the background of global climate change in the Qinling Mountains. The results showed that: (1) For the past 52 years, the start of plant phenophase has emerged an early trend, the advance rate is 1.2 days decade-1; the delay rate is 3.5 days decade-1 in the end of plant phenophase, and the growth period is prolonged significantly in the Qinling Mountains. The main reason on prolongation of the growth period in Qinling area is rising temperature. There was a discrepancy between the response of the start & end phenophase and the temperature. (2) The abrupt change of phenophase occurred in the 1980s, start in 1985 and end in 1984. After the abrupt change, the plant phenological characteristics changed obviously, which the mean advance rate was faster than pre-mutation, and advanced trend before the pre-mutation turned into the most significant delayed trend in the end of plant phenophase, and prolonged in the growth period; the rate of change and the significance in the end of plant phenophase were higher than the start period. The change in the start and end of plant phenophase manifest a "convergence effect". The phenological interdecadal variations show that the advanced rate in the start of plant phenophase has slowed down at the beginning from 2001 to 2005, and the response of plants to climate change showed adaptability and hysteresis quality. These stated the dominant factor that leads to the change of the start
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