干旱区研究

干旱区研究 ›› 2012, Vol. 29 ›› Issue (1): 109-114.

• 植物生态 • 上一篇    下一篇

河西走廊东部木本植物物候对气候变化的响应

魏育国1,2,蒋菊芳2,刘明春2,梁从虎2   

    1. 中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾开放实验室，甘肃 兰州 730020
    2. 甘肃省武威市气象局，甘肃 武威 733000
  • 收稿日期:2010-12-10 修回日期:2011-02-08 出版日期:2012-01-15 发布日期:2012-02-27
  • 作者简介:魏育国（1978-），男，甘肃民勤人，工程师，主要从事农业气象与荒漠生态工作. E-mail: wwweiyuguo@sohu.com
  • 基金资助:

    甘肃省“十人计划”项目；公益性行业（气象）科研专项“西北地区旱作农业对气候变暖的响应特征及其预警和应对技术研究”（GYHY200806021)和甘肃省“一线专门人才”项目共同资助

Response of Phenological Change of Woody Plants to Climate Change in the East Hexi Corridor

WEI Yu-guo1,2,JIANG Ju-fang2,LIU Ming-chun2,LIANG Conghu2   

    1. Key Laboratory of Arid Climate Change and Disaster Reduction of Gansu Province, Open Laboratory of Arid Climate Change and Disaster Reduction of CMA, Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China
    2. Wuwei Meteorological Bureau, Wuwei 733000, China
  • Received:2010-12-10 Revised:2011-02-08 Online:2012-01-15 Published:2012-02-27

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摘要： 运用膨化相关、SPSS统计软件进行逐步回归、方差分析，对河西走廊东部（1980-2004年）木本植物旱柳（Salix mantsudana）和中国槐（Sophora japonica）的物候变化进行分析，探讨各物候期与气象因子的相关性。研究表明：① 物候变化趋势表现为芽开放、展叶提前,线性倾向率为-0.110 8～-0.356 2；开花、叶变色和落叶期总体推后，线性倾向率为0.479 2～0.710 8；② 从各物候间隔期看，绿叶期延长1.046～7.738 d/10 a、营养生长期延长0.877～8.454 d/10 a、干物质积累期延长4.392～7.738 d/10 a和秋季生长期延长0.477～3.015 d/10 a；③ 木本植物物候与春温呈负相关，春温高，物候提前；与秋温呈正相关，秋温高，物候期推迟。降水与开花、落叶呈显著正相关，而光照因生物本身的发育阶段而异，外界环境因素和生物内在的生物钟机制耦合一起发挥作用。物候变化对局部环境带来一系列连锁反应。

关键词: 物候期, 气候变化, 木本植物, 旱柳（Salix mantsudana）, 中国槐（Sophora japonica）, 河西走廊

Abstract: In this paper, the phenological change of woody plants (Salix mantsudana and Sophora japonica)in the east Hexi Corridor during the period from 1980 to 2004 was analyzed after carrying out the step regression and variance analysis using the expansion correlation and SPSS software. The effects of meteorological factors on phenological change and their correlations were investigated. The correlations between phenologcal stages and temperature, precipitation and sunshine were significant. The results are as follows: (1) The phenological change trends were that bud opening and leaf expansion stages became earlier, the linear trend rate varied in a range of -0.110 8--0.356 2; the stages of bloom, leafcolor change and defoliation were postponed, and the linear trend rate varied in a range of 0.479 2-0.710 8; (2) The analyzed results of phenological plastochrones revealed that the greenleaf stage, growth stage, dry matter cumulative stage and autumn growth stage of woody plants were prolonged for 1.046-7.738 d/10 a, 0.877-8.454 d/10 a, 4.392-7.738 d/10 a and 0.477-3.015 d/10 a respectively; (3) There was the negative correlations between the phenological stages of woody plants and spring temperate, the phenological stages became earlier when spring temperate was increased; there was a positive correlation between the phenological stages and autumn temperature, the phenological stages were postponed when autumn temperate was increased. There was a significant positive correlation between precipitation and bloom and defoliation. But the correlation between sunshine and biological properties was different from different growth stage. The effects of environmental factors and biological mechanism were coupling. Change of phenological stages of woody plants brought a series of chain reactions in local ecological environment.

Key words: phenological stage, climate change, woody plant, Salix mantsudana, Sophora japonica, Hexi Corridor