近39年民勤荒漠区气温变化对乔木植物物候的影响  

Effect of Temperature Change on Ttree Phonology nearly 39 Years in Minqin Desert Area

作　　者：张大彪[1,2] 张逸君[1,2] 万翔[1] ZHANG Da-biao Zhang Yi-jun WAN Xian(Gansu Desert Control Research Institute, Lanzhou, Gansu 730070 Gansu Minqin National Field Obseruation ＆ Research Station on Ecosystem of Desert Grassland, Minqin, Gansu 733300)

机构地区：[1]甘肃省治沙研究所,甘肃兰州730070 [2]甘肃民勤荒漠草地生态系统国家野外科学观测研究站,甘肃民勤733300

出　　处：《安徽农业科学》2017年第10期193-196,共4页Journal of Anhui Agricultural Sciences

摘　　要：利用甘肃民勤荒漠草地生态系统国家野外科学观测研究站1975—2013年气象资料,与当地乔木沙枣、二白杨、胡杨、小枣、家杏、桑树6种乔木物候观测资料,通过5年时间段统计物候发生日的偏离程度,统计春季物候年度展叶期、开花期变化趋势,分析物候变化对气温变化的响应关系。结果表明,近39年研究区春季平均气温以0.053℃/a的速度升高,荒漠植物的多种物候期出现同步性的提前;39年春季物候提前了7.6~12.1 d,即气温每提升1.0℃,可导致春季物候期提早2.1~5.8 d,秋季落叶期平均推迟3.8 d。Based on the meteorological data of the Gansu Minqin National Field Obseruation ＆ Research Station on Ecosystem of Desert Grassland from 1975 to 2013 and the phenological data of six local tree as Elaeagnus angustifolia, Populous gausuensis, Populus euphratica, Ziziphus sativa ,Prunus armeniaca ,Morus alba, through the five years period of statistical basis for the occurrence of deviations, trends of leaf expansion period and flowering period in spring phenological year were counted, the response of phenological change to temperature change was analyzed. The results showed that the average temperature in spring of recent 39 years was rising as 0. 053 ℃/a, a variety of phenological synchronization were synchronized in advance in different desert plant ,the average advance of spring phenology was 7.6 - 12.1 days in the past 39 years ,the temperature of each increase of 1.0 ℃, could lead to phenophase early 2. 1 - 5.8 days in spring, the average postponement of 3.8 days in autumn deciduous.

关 键 词：木本植物 物候 气温变化 响应趋势 民勤荒漠区 

分 类 号：S716[农业科学—林学]