干旱区研究

干旱区研究 ›› 2013, Vol. 30 ›› Issue (1): 101-108.

• 植物生态 • 上一篇    下一篇

酒泉绿洲天然胡杨林主要生长季对全球气候变化的响应

刘普幸, 朱小娟, 赵敏丽, 姚玉龙, 陈丽丽   

  1. 西北师范大学地理与环境科学学院，甘肃　兰州 730070
  • 收稿日期:2011-12-19 修回日期:2012-09-05 出版日期:2013-01-15 发布日期:2013-01-16
  • 作者简介:刘普幸（1964-），女，教授，博士，研究方向为干旱区域环境与绿洲建设.E-mail: fmlpx@nwnu.edu.cn
  • 基金资助:

    国家自然科学基金项目(40961035)；甘肃省自然科学基金项目(0803RJZA094)共同资助

Response of Annual Growing Season of Populus euphratica] to Climate Change in the Jiuquan Oasis during the Period from 1955 to 2010

 LIU  Pu-Xing, ZHU  Xiao-Juan, ZHAO  Min-Li, YAO  Yu-Long, CHEN  Li-Li   

  1. College of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China
  • Received:2011-12-19 Revised:2012-09-05 Published:2013-01-15 Online:2013-01-16

PDF (PC)

1009

赞

被引次数

10

摘要： 利用酒泉绿洲胡杨林分布区所辖4个气象站点1955—2010年的平均气温观测资料，采用气候倾向率、ArcGIS反距离加权差值、Mann-Kendall非参数统计检验等方法，对该区天然胡杨林主要生长季的时空变化特征及其对全球气候变化的响应进行分析。结果表明：近56 a来，研究区胡杨有生长期初日提前，终日推后，年生长期延长以及叶黄初日推后的趋势，且提前和推后幅度自20世纪90年代以来变化明显。空间分析表明：胡杨林主要生长季变化有一定规律性，生长期初日提前幅度依次为：鼎新＞玉门＞瓜州＞敦煌；生长期终日推迟的幅度为：鼎新＞玉门＞敦煌＞瓜州；年生长期延长的幅度为：鼎新＞玉门＞敦煌＞瓜州；叶黄期初日推迟幅度依次为：鼎新＞敦煌＞玉门＞瓜州。Mann-Kendall突变表明：研究区胡杨的生长期初日、终日以及叶黄期初日均存在多个突变，且突变年份多滞后气温突变年份。由此可见，研究区胡杨对气候变化响应较为敏感。

关键词: 绿洲, 胡杨（Populus euphratica）, 生长期, 叶黄期, 气候变化, 酒泉

Abstract: In the past few years, many reports showed that the plant phonology trended towards earlier in spring but later in autumn in Europe, America and Asia. So the research on the response of vegetation to climate change would be of great theoretical and practical significances for scientifically understanding climate change and adaptability of vegetation and also for working out the measures to adapt climate change. The Jiuquan Oasis is situated in an arid and semiarid region of northwest China. It is one of the main distribution regions of Populus euphratica, and also a sensitive region to climate change as well as an ideal place to study climate change in arid and semiarid regions. Based on the daily temperature data from the meteorological stations in the Jiuquan Oasis during the period from 1955 to 2010, this paper analyzed the beginning and ending dates of growth season and the beginning date of yellow leaves of P. euphratica, and the response of P. euphratica to global climate change with the methods of climate trending rate, inverse distance weighted interpolation, and Mann-Kendall abrupt change test. The results are as follows: (1) In recent 56 years, the beginning date of growing season of P. euphratica became earlier, but the ending date became later, and the beginning date of yellow leaves was in a clear delaying trend; (2) The results of inverse distance weighted interpolation analysis show that the beginning date of growth season of P. euphratica became earlier in recent 56 years, it, however, was not significantly, and the movingup amplitude was in an order of Dinxing>Yumen>Guazhou>Dunhuang. The ending date of growth season and the beginning date of yellow leaves of P. euphratica were delayed obviously, and they were in orders of Dinxing>Yumen>Dunhuang>Guazhou and Dinxing>Dunhuang>Yumen>Guazhou; (3) The results of abrupt change analysis show that the abrupt changes of beginning and ending dates of growing season and beginning date of yellow leaves of P. euphratica occurred in 1961, 1997 and 2006. Thus it can be seen that the response of P. euphratica to climate change was sensitive in the study area.

Key words: Oasis, Populus euphratica, growing season, yellow leaf, climate change, Jiuquan