干旱区生态环境知识资源中心(Arid): 东祁连山南坡现代花粉雨与植被

Arid

	东祁连山南坡现代花粉雨与植被
其他题名	Modern pollen precipitation in the southern slope of the Eastern Qilian Mountains and its relationship to vegetation
	吕新苗 1; 吴绍洪 1; 陈辉 2; 许清海 3; 阳小兰 4
来源期刊	北京林业大学学报
ISSN	1000-1522
出版年	2004
卷号	26 期号:5 页码:55-60
中文摘要	东祁连山南坡位于青藏高原、黄土高原和西北干旱区的过渡地带,植被类型具有多样性、复杂性和过渡性的特点,植被垂直分异十分明显.以该区主要植被类型下的表土花粉百分含量为数据源,采用DCA排序方法定量研究表土花粉的组合特征及其与环境的关系.结果表明:主要的植被类型可以由他们的表土花粉谱区分开来--杨桦林、云杉林、高寒灌丛、高寒草甸.花粉谱的变化也反映了植被随海拔高度和温度的变化.但杨桦花粉在林中的代表性有待进一步研究;氧化作用对花粉的破坏作用最大,花粉浓度随pH值升高呈指数递减,pH值7.6以上,花粉浓度迅速降低.
英文摘要	This paper aims is to investigate pollen-vegetation relationship in the Qilian Mountains. Located in the transition zone of the Tibetan Plateau, the Loess Plateau and the arid area of Northwest China, the Qilian Mountains is sensitive to global environmental change. A total of 13 surface pollen samples from main vegeta-tion were collected. Pollen percentages were calculated in all samples. The soil samples were collected, De-trended Correspondence Analysis(DCA)ordination method was employed on the pollen data. The results show that dominant vegetation types can be recognized by their pollen spectra: Picea crassifolia forest, alpine shrub and alpine meadow. It is altitude and temperature that determine the distribution of the surface pollen and the vegetation. The good agreement between modem vegetation and modem surface samples across this area provides a measure of the reliability of using pollen data to reconstruct paleoenvironment and paleovegetation pattern in this or other similar regions. While the loss of BeUda pollen in forest needs further investigation. Pollen oxida-tion is the most important factor that contributes to the damage of modern pollen in the study area. Pollen con-centrations decrease with the increase of pH values of soil, and decrease sharply as the pH is over 7.6.
中文关键词	现代花粉雨 ; 植被 ; 环境 ; 东祁连山 ; 青藏高原
英文关键词	modern pollen precipitation vegetation environment the Eastern Qilian Mountains the Tibetan Plateau
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:1675741
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204782
作者单位	1.中国科学院地理科学与资源研究所; 2.中国科学院地理科学与资源研究所;河北师范大学资源与环境学院; 3.河北师范大学资源与环境学院; 4.河北省地理科学研究所
推荐引用方式 GB/T 7714	吕新苗,吴绍洪,陈辉,等. 东祁连山南坡现代花粉雨与植被[J]. 中国科学院地理科学与资源研究所,2004,26(5):55-60.
APA	吕新苗,吴绍洪,陈辉,许清海,&阳小兰.(2004).东祁连山南坡现代花粉雨与植被.北京林业大学学报,26(5),55-60.
MLA	吕新苗,et al."东祁连山南坡现代花粉雨与植被".北京林业大学学报 26.5(2004):55-60.