A LATE QUATERNARY POLLEN DIAGRAM FROM LAKE URMIA (NORTHWESTERN IRAN)
A LATE QUATERNARY POLLEN DIAGRAM FROM LAKE URMIA (NORTHWESTERN IRAN)
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DOI：
10.1016/0034-6667(86)90039-4
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发表时间：
1986-05-01
影响因子：
1.9
通讯作者：
BOTTEMA, S
中科院分区：
文献类型：
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作者：
BOTTEMA, S
在这项研究中，晚冰期和全新世植被和气候发展的乌尔米亚地区在伊朗西北部进行了讨论。花粉的证据表明，蒿草原占主导地位的地区约9000年B. P.降水，可能在暴雨的形式，直接跑到湖盆。降水量的增加使草草原在晚冰期中期得以发展。在此期间，碎屑矿物几乎没有被运送到湖中。据推测，降水量的增加造成植被覆盖的增加，从而防止了直接径流。9000 ~ 8000年B. P.森林草原发育，C. 7000年B. P.植被形成，与现在的植被相似。Urmia、Zeribar（伊朗）、货车（土耳其东部）和Akgol（土耳其中部）的花粉图相互关联。货车图的年龄，基于纹层测年，福尔斯线，这引发了怀疑的有效性测年方法为这个网站。
In this study, the Late Glacial and Holocene vegetation and climate development of the Urmia region in northwestern Iran are discussed. The pollen evidence indicates that Artemisia steppe dominated the area up to about 9000 yr B.P. Precipitation, possibly in the form of torrential showers, ran off directly to the lake basin. Some increase in precipitation enabled a grass steppe to develop during the middle part of the Late Glacial. During this period detrital minerals were hardly transported to the lake. It is assumed that the increase in precipitation caused an increase in vegetation cover which in turn prevented direct run-off. Between 9000 and 8000 yr B.P. forest-steppe developed and c. 7000 yr B.P. vegetation became established that is similar to the present vegetation. The pollen diagrams of Urmia, Zeribar (Iran), Van (eastern Turkey) and Akgol (central Turkey) were correlated with each other. The age of the Van diagram, based upon varve dating, falls out of line, which throws doubt upon the validity of the dating method for this site.