干旱区生态环境知识资源中心(Arid): 天山乌鲁木齐河源区大西沟表土花粉散布特征

Arid

	天山乌鲁木齐河源区大西沟表土花粉散布特征
其他题名	Pollen Distribution in Topsoil along the Daxigou Valley in the Headwaters of the Urumqi River, the Central Tianshan Mountains
	杨振京 1; 孔昭宸 1; 阎顺 2; 倪健 1; 马克平 1; 许清海 3
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2004
卷号	27 期号:4 页码:543-547
中文摘要	在天山乌鲁木齐河源区大西沟垂直植被带表土孢粉分析及植被调查的基础上,对大西沟垂直带的植被与表土孢粉的关系进行了探讨.从表土孢粉百分比含量可划分出4个孢粉带,其对应的植被带分别为高山垫状植被、高山草甸、亚高山草甸和云杉(Picea)林带.孢粉百分含量基本上反映了大西沟地区垂直植被带分布的特征.云杉、麻黄(Ephedra)、藜科(Chenopodiaceae)和蒿属(Artemisia)等植物花粉明显表现为超代表性.山谷上升气流在天山山地垂直植被带的表土孢粉散布中起着重要的作用.
英文摘要	The headwaters of the Urumqi River is located in the central Tianshan Mountains, the elevations of the main peak and the most mountain ridges are 4 486 m and 4 100 - 4 300 rri a. s. 1. respectively, and the elevations of the snowlines, glacier terminuses, lower lines of permafrost and upper timber lines vary in ranges of 4 000-4 100 m, 3 650-3 700 m, 3 200-3 300 m and 2 600-2 900 m a. s. 1. respectively. It belongs to the continental mountainous climate, the vertical zones are significant, and it is extremely arid in the low mountain zone but cold and humid in the alpine zone. According to the meteorological data observed by Daxigou Meteorological Station, the annual air temperature and the annual temperature difference are - 5. 4t and 35. 9t respectively, and the annual precipitation is 430. 2 mm, in which the snowfall and the precipitation in summer (from June to August) occupy 74. 5% and 66% of the annual precipitation respectively. In this paper, the relationship between the pollen in topsoil and the modern vegetation along the Daxigou Valley in the headwaters of the Urumqi River in the central Tianshan Mountains is researched based on analyzing the pollen in topsoil in the different vertical vegetation zones and the investigation on the modem vegetation. According to the percentages of pollen in topsoil, four pollen zones can be divided, and the corresponding vertical vegetation zones are the alpine meadow-like vegetation zone, alpine meadow zone, subalpine meadow zone and montane forest zone of Picea asperata, respectively. The features of the vertical vegetation zones are basically reflected by the percentages of pollen in topsoil in the Dazigou Valley. The analyzed results of pollen in topsoil reveal that the typical plants in this region are Picea asperata, Ephedra sinica and Artemisia L. Updraft in the valley plays an important role in the distribution of pollen in topsoil in the vertical vegetation zones.
中文关键词	表土 ; 花粉散布 ; 大西沟 ; 乌鲁木齐河 ; 天山
英文关键词	topsoil pollen distribution Daxigou Valley Urumqi River the Tianshan Mountains
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PALEONTOLOGY
WOS研究方向	Paleontology
CSCD记录号	CSCD:1807296
来源机构	中国科学院新疆生态与地理研究所 ; 中国科学院植物研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205036
作者单位	1.中国科学院植物研究所, 植被数量生态学重点实验室, 北京 100093, 中国; 2.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国; 3.河北师范大学资源与环境学院, 石家庄, 河北 050016, 中国
推荐引用方式 GB/T 7714	杨振京,孔昭宸,阎顺,等. 天山乌鲁木齐河源区大西沟表土花粉散布特征[J]. 中国科学院新疆生态与地理研究所, 中国科学院植物研究所,2004,27(4):543-547.
APA	杨振京,孔昭宸,阎顺,倪健,马克平,&许清海.(2004).天山乌鲁木齐河源区大西沟表土花粉散布特征.干旱区地理,27(4),543-547.
MLA	杨振京,et al."天山乌鲁木齐河源区大西沟表土花粉散布特征".干旱区地理 27.4(2004):543-547.