干旱区生态环境知识资源中心(Arid): 敦煌绿洲1955年至2010年胡杨年生长季对气候变化的响应

Arid

	敦煌绿洲1955年至2010年胡杨年生长季对气候变化的响应
其他题名	Response of the Annual Growing Season of Populus Euphratica to Climate Change in Dunhuang Oasis from 1955 to 2010
	刘普幸; 杨泉
来源期刊	资源科学
ISSN	1007-7588
出版年	2012
卷号	34 期号:3 页码:566-571
中文摘要	利用敦煌绿洲气象站1955年-2010年日平均气温资料,采用气候倾向率、Mann-Kendall检验、相关分析及Morlet小波功率谱等方法分析了研究区胡杨生长季对全球气候变化的响应。结果表明:近56a来,研究区胡杨年生长季有开始日提前,终止日推后,年生长季天数延长的趋势;展叶始日有提前趋势,叶黄初日有推后趋势。胡杨生长季开始日、展叶始日分别与3月和4月平均气温呈负相关关系,胡杨生长季终止日、生长期天数及叶黄初日分别与10月、3月-11月及8月-9月平均气温呈正相关关系。胡杨生长季开始日、终止日、生长季天数、展叶期及叶黄初日均具有多个突变,存在3.77~8.33a的短尺度周期,这反映出研究区胡杨生长季对气候变化响应十分敏感。
英文摘要	Dunhuang Oasis is situated at the arid and semi-arid region of northwest China. It is one of the main distribution regions of Populus euphratica, and also a sensitive region to reflect the climate change as well as an ideal place to study the climate change of arid and semi-arid region and vegetation response. The research of the vegetations response to climate change would be of great theoretical and practical significances for scientifically knowing the climate change and the adaptability of vegetation and formulating the response measures. Based on the daily average temperature data between 1955 and 2010 from Dunhuang Oasis weather station,this paper has analyzed the beginning date and ending date of Populus euphraticas annual growth season, the beginning date of yellow leaves and the response of Populus euphratica to the global climate change with the methods of climate trending rate, Mann-Kendall abrupt change test, correlation analysis and the Morlet wavelet power spectrum. The results show that: 1) In the past 56 years, the beginning date of the annual growing season of Populus euphratica is becoming earlier but the ending date is becoming later; the beginning date of yellow leaves has clear delaying trend;2) The beginning dates of the annual growing season and leaf unfolding of Populus euphratica are negatively correlated with the average temperature of March and April respectively; the ending date and the annual growth period of Populus euphratica and the beginning date of yellow leaves are positivey correlated with the average temperature of October, March to November and August to September respectively; 3) The beginning date, ending date of Populus euphraticas annual growth season, the annual growth period, the date of leaf unfolding and the beginning date of yellow leaves all have many abrupt changes. 4) There is a short scale period of 3.77 years to 8.33 years, which reflects the sensitive response of Populus euphraticas annual growing season to the climate change in Dunhuang Oasis.
中文关键词	敦煌绿洲 ; 胡杨 ; 年生长季 ; 气候变化 ; 响应 ; Morlet小波功率谱
英文关键词	Dunhuang Oasis Populus euphratica The annual growing season Climate change Response Morlet wavelet power spectrum
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4498888
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229154
作者单位	西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	刘普幸,杨泉. 敦煌绿洲1955年至2010年胡杨年生长季对气候变化的响应[J]. 西北师范大学,2012,34(3):566-571.
APA	刘普幸,&杨泉.(2012).敦煌绿洲1955年至2010年胡杨年生长季对气候变化的响应.资源科学,34(3),566-571.
MLA	刘普幸,et al."敦煌绿洲1955年至2010年胡杨年生长季对气候变化的响应".资源科学 34.3(2012):566-571.