干旱区生态环境知识资源中心(Arid): 青海表土花粉分布规律及其与植被的关系

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	青海表土花粉分布规律及其与植被的关系
其他题名	Pollen distribution patterns of surface soil sample in Qinghai of China and their relationship with vegetation
	魏海成 1; 郑卓 2; 马海州 1; 潘安定 3; 黄康有 2; 罗传秀 2; 郑艳伟 2; 王志英 3
ISSN	1000-6060
出版年	2009
卷号	32 期号:6 页码:932-940
中文摘要	对青海地区63个样点进行植被调查及表土样点分析结果显示:青海地区山地针叶林、针阔混交林、高山灌丛一灌丛草甸、温带草原、灌木一半灌木荒漠及高寒荒漠植被区均有相对独特的花粉组合特征.乔木类中桦呈超代表性,云杉、柏、杨属呈低代表性;灌木、草本中白刺、沙拐枣、柽柳呈低代表性,蒿、藜、麻黄呈超代表性,蔷薇科金露梅、银露梅在自身为优势种的落叶灌丛群落中呈低代表性,在针阔叶林、灌丛草甸过渡带中呈适中代表性.禾本科、莎草科、菊科、豆科、十字花科呈低代表性.A/C值在不同生态环境下的变化幅度较大,但数据组显示A/C值中位数值由半干旱向干旱植被区逐次降低,如草甸和草原为4.14,高山灌丛为2.93,荒漠草原为1.22,荒漠灌丛为0.13,荒漠戈壁为0.05.可见,A/C值能很好地反映环境干湿程度,是环境干旱程度的良好指标.
英文摘要	Qinghai Province lies in the transitional area from semi-arid to arid region in China. In order to reveal the characteristics of pollen distribution and the quantitative relationship between vegetation communities and their pollen spectra for surface soil sample in this area, we firstly carried out on-site vegetation investigation in the pollen sample locations. Our results show that the principal vegetation types in Qinghai are coniferous forests, mixed conif- erous and broadleaf forests in the mountains of the temperate zone, alpine shrubs and alpine meadows, temperate steppes, shrub and sub-shrub desert, and alpine deserts. Pollen analysis on 63 samples collected from surface soil indicates that each vegetation community has the relatively unique pollen assemblage. The majority of the pollen taxa has their percentages closely relating to the dominant plants in the vegetation. The representation of surface soil pollen varies with genera and species. For instance, Picea, Sabina and Populus pollen are under-representative, but Betula is over-representative in arboreal types. Whereas, Nitraria, Calligonum and Tamarixaceae are under-re- presented in the steppe and shrub types, and Artemisia, Chenopodiaceae, Ephedra are over-represented. The domi-nant plant species in deciduous shrubs, Potentilla fruticosa, Pltentilla glabra, have a under-representative pollen value (Rosaceae ). Many herbs identified at the family level, such as Gramineae, Cyperaceae, Compositae and Le-guminosae are frequently under-representative. The median value of A/C (Artemisia/Chenopodiaceae) ratio de-creases from 4. 14 in the high mountain meadow and steppes to 0.05 in the desert, suggesting that the A/C ratio can clearly reflect the aridity level and could be considered as a proxy for paleoclimatic reconstruction.
中文关键词	青海地区 ; 表土花粉 ; A/C值 ; 植被盖度 ; 孢粉分析
英文关键词	Qinghai area surface soil pollen A/C ratio vegetation coverage pollen analysis
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:3841516
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223583
作者单位	1.中国科学院,青海盐湖研究所, 中国科学院盐湖资源与化学重点实验室, 西宁, 青海 810008, 中国; 2.中山大学地球科学系, 广州, 广东 510270, 中国; 3.广州大学地理科学学院, 广州, 广东 510006, 中国
推荐引用方式 GB/T 7714	魏海成,郑卓,马海州,等. 青海表土花粉分布规律及其与植被的关系[J]. 中国科学院西北生态环境资源研究院,2009,32(6):932-940.
APA	魏海成.,郑卓.,马海州.,潘安定.,黄康有.,...&王志英.(2009).青海表土花粉分布规律及其与植被的关系.,32(6),932-940.
MLA	魏海成,et al."青海表土花粉分布规律及其与植被的关系".32.6(2009):932-940.