干旱区生态环境知识资源中心(Arid): 新疆天山大气桦木花粉与气象因子的相关分析

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	新疆天山大气桦木花粉与气象因子的相关分析
其他题名	The correlation between airborne Betula pollen content and meteorological factors in the Tianshan Mountains, Xinjiang, China
	李媛媛 1; 张芸 2; 倪健 3; 孔昭宸 4; 王力 5; 李玉梅 6; 陈立欣 1
来源期刊	科学通报
ISSN	0023-074X
出版年	2019
卷号	64 期号:18 页码:1909-1921
中文摘要	大气花粉的运移和沉降与各地的气象因子间存在着密切的联系.通过在新疆中天山地区处于不同植被带的3个研究点(新疆天池气象站、阜康荒漠生态系统定位站及北沙窝草炭试验站)安装花粉收集器,进行了长达5年(2001年7月~2006年7月)的大气中桦木属花粉的监测,目的是为了探讨桦木属花粉的数量变化和时空分布动态特征,以及与各个气象因子之间的响应关系.研究结果表明: (1)桦木属花粉组合与植物的花期相对应,具有季节性变化.在2003年, 3个研究点的桦木属花粉浓度都最低,可能与2003年年平均温度降低有关,低温致使花粉减产. (2)由桦木属花粉含量与主要气象因子的相关分析得出,天池研究点和阜康研究点的年平均温度高低直接影响着桦木属花粉浓度大小,年平均降水和日照时数则在不同地区表现出相反的影响,风速和风向对桦木属花粉的散布有一定影响. (3)新疆天池地区大气中桦木属花粉的产量能反映其植物分布情况;而中天山地区一些表土和全新世地层中的桦木属花粉含量偏高,应能直接表明其古植被中的植物区系成分的组成,且与全新世气候变化及人类活动的影响密切相关.该项研究有助于新疆地区古气候重建、大气环境监测和生态文明建设.
英文摘要	Studies have shown that there is a close relationship between the transport and deposition of airborne pollen and meteorological factors. The aim of this study was to investigate quantitative changes in airborne Betula pollen, its spatial and temporal distribution dynamics, and its response to meteorological factors. In order to do this, we installed three sets of Cour airborne pollen traps at Xinjiang Tianchi Meteorological Station, Fukang Ecological Positioning Station, and Beishawo Experimental Station, which are located in areas of different vegetation types in the central Tianshan Mountains in northern Xinjiang of China, to monitor airborne Betula pollen data for approximately 5 years (July 2001 to July 2006). Our results showed that: (1) The 5-year average airborne pollen dataset showed variation in the dynamics of Betula pollen at different sites. At the Tianchi research site Betula pollen appeared in late April and reached its peak after 2 weeks, in early May, then decreased rapidly. The peak value of Betula pollen at Fukang research site also occurred in early May, and then slowly decreased. At Beishawo research site, it reached its peak value in mid-May, and slowly fell after a week. In autumn, some Betula pollen may remain on trees or on the soil surface, having been blown there by the wind. However, the pollen concentration in winter was extremely low, almost zero. The diversity and abundance of different Betula species present in the pollen dataset corresponded to the flowering periods of different species and varied with season. Over these 5 years, the peak period of Betula pollen has advanced year by year. The flowering phenology of birch plants has also advanced year by year during these 5 years, likely owing to the increasing annual average temperature. Across the three research sites, the concentration of airborne Betula pollen decreased to its lowest level in 2003, which had the lowest annual average temperature. This suggests that airborne Betula pollen production decreased because of lower temperatures. (2) According to the results of a Pearson correlation analysis, the relationship between the airborne Betula pollen content and meteorological factors was significant in Tianchi, but not in Fukang. It was closely related to the distribution and ecological habits of Betula trees. The average annual temperature of Tianchi and Fukang research sites directly affected the pollen concentration of airborne Betula pollen. However, the average annual precipitation showed an opposite correlation with Betula pollen concentration, which indicated that birch plants had different ecological adaptability. Precipitation was a limiting factor for birch plant growth in the Fukang area. Additionally, wind speed and direction also affected Betula pollen transportation to a certain extent. (3) In the Tianchi area, where birch trees are distributed, Betula pollen production can directly reflect the number of birch trees and the ecological environment. The high Betula content in some fossil pollen records from the central Tianshan Mountains in northern Xinjiang of China also reflects the growth and distribution of birch plants, and is closely connected to Holocene climate change and human activities. Therefore, this research on 5-year average airborne pollen dataset from Xinjiang Tianchi Meteorological Station, Fukang Ecological Positioning Station, and Beishawo Experimental Station in the central Tianshan Mountains in northern Xinjiang of China is helpful for the study of fossil and topsoil Betula pollen in the central Tianshan Mountains, and the construction of an ecological civilization in Xinjiang.
中文关键词	桦木属 ; 大气花粉浓度 ; 年平均温度 ; 中天山 ; 新疆
英文关键词	Betula airborne pollen concentration annual average temperature central Tianshan Mountains Xinjiang
语种	中文
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6574505
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315987
作者单位	1.中国科学院植物研究所;;中国科学院大学生命科学学院, 植被与环境变化国家重点实验室;;, ;;, 北京;;北京 100093;;100049, 中国; 2.中国科学院植物研究所;;河北地质大学资源学院, 植被与环境变化国家重点实验室;;, ;;石家庄, 北京;; 100093;;050031, 中国; 3.浙江师范大学化学与生命科学学院, 金华, 浙江 321004, 中国; 4.中国科学院植物研究所, 植被与环境变化国家重点实验室, 北京 100093, 中国; 5.中国科学院植物研究所;;中国科学院大学资源与环境学院, 植被与环境变化国家重点实验室;;, ;;, 北京;;北京 100093;;100049, 中国; 6.吉林大学地球科学学院, 长春, 吉林 130061, 中国
推荐引用方式 GB/T 7714	李媛媛,张芸,倪健,等. 新疆天山大气桦木花粉与气象因子的相关分析[J],2019,64(18):1909-1921.
APA	李媛媛.,张芸.,倪健.,孔昭宸.,王力.,...&陈立欣.(2019).新疆天山大气桦木花粉与气象因子的相关分析.科学通报,64(18),1909-1921.
MLA	李媛媛,et al."新疆天山大气桦木花粉与气象因子的相关分析".科学通报 64.18(2019):1909-1921.