干旱区生态环境知识资源中心(Arid): 内蒙古中部四子王旗荒漠草原过渡带表土花粉分析

Arid

	内蒙古中部四子王旗荒漠草原过渡带表土花粉分析
其他题名	POLLEN ANALYSIS OF SURFACE SAMPLES FROM THE DESERT-STEPPE TRANSITIONAL AREA OF SIZIWANGQI, CENTRAL INNER MONGOLIA
	舒军武 1; 毛方园 2; 王伟铭 1; 王元青 2
ISSN	1000-0674
出版年	2009
卷号	26 期号:4 页码:405-413
中文摘要	通过研究内蒙古中部四子王旗地区的表土花粉,试图揭示荒漠草原地区小尺度范围中表土花粉的植被和气侯指示意义.源自4个不同植物群落的19块表土花粉显示:研究区表土花粉组合主要以草本植物蒿属(Artemisia)、藜科(Chenopodiaceae)花粉占优势,两者百分含量一般在60%以上;禾本科(Poaceae)花粉具低代表性,平均含量在5%左右;另含有一定数量的白刺属(Nitraria)、麻黄属(Ephedra)、菊科(Asteraceae)和葱属(Allium)等花粉为特征.笔者首次提出的(蒿属+禾本科+菊科)/(白刺属+麻黄属+藜科)百分比值,有效地揭示了研究区北部较南部要干旱,与A/C比值及当地现生植被生境和气候因子相吻合.研究结果对我国内陆干旱、半干旱荒漠草原区第四纪古植被的恢复,以及古气候的重建提供了参照依据.
英文摘要	A total of 19 surface samples were palynologically analyzed in attempt to reveal the implication of surface pollen data under the modern vegetation and climate conditions in the desert-steppe area in Siziwangqi, Central Inner Mongolia, NE China. The results show that the pollen flora is characterized by the dominant Artemisia and Chenopodiaceae, usually accounting for above 60%. Poaceous pollen is at low level with an average percentage about 5% and some typical desert-steppe taxa are common such as Nitraria, Ephedra, Asteraeeae and Allium. Exotic are limited arboreal pollen such as Pinus, Betula,and Quercus induced by winds from the southern mountainous areas.The pollen flora is much similar to those from the arid and semi-arid area in NE China but is significantly different from the modern Stipa-Salsola dominant plant communities where the surface soil was sampled. This may can be mainly attributed to the high productivity and dispersal of Artemisia and Chenopodiaceae in windy arid-semiarid areas, which overshadows the representation of the Poaceae-dominated steppe.The ratio of (Artemisia + Poaceae + Asteraceae) / ( Nitraria + Ephedra + Chenopodiaceae) [- ( A + P + A) / ( N + E +C)] in pollen percentage proposed by the authors is useful to significantly identify the climatic condition in terms of relative aridity which is comparable to the ratio of Artemisia/ Chenopodiaceae (A/C). The result shows that the northern part (Zone A-1) with lower (A+P+A) / (N+E+C) and A/C is drier than the southern part (Zone A-2)corresponding to the modern precipitation distribution in the study area.
中文关键词	表土花粉 ; 干旱、半干旱区 ; 荒漠草原 ; 四子王旗 ; 内蒙古
英文关键词	surface pollen arid and semi-arid area desert-steppe Siziwangqi Inner Mongolia
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:3800606
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224292
作者单位	1.中国科学院南京地质古生物研究所, 南京, 江苏 210008, 中国; 2.中国科学院古脊椎动物与古人类研究所, 北京 100044, 中国
推荐引用方式 GB/T 7714	舒军武,毛方园,王伟铭,等. 内蒙古中部四子王旗荒漠草原过渡带表土花粉分析[J],2009,26(4):405-413.
APA	舒军武,毛方园,王伟铭,&王元青.(2009).内蒙古中部四子王旗荒漠草原过渡带表土花粉分析.,26(4),405-413.
MLA	舒军武,et al."内蒙古中部四子王旗荒漠草原过渡带表土花粉分析".26.4(2009):405-413.