Климат, лед, вода, ландшафты

Climate, ice, water, landscapes

Рудой Алексей Николаевич

2009. Наталия Рудая, Павел Тарасов и др. Голоцен Монголии...

Rudaya_et_al_2009.pdf 

© Quaternary Science Reviews 

Holocene environments and climate in the Mongolian Altai reconstructed from the Hoton-Nur pollen and diatom records: a step towards better understanding climate dynamics in Central Asia

Natalia Rudaya, Pavel Tarasov, Nadezhda Dorofeyuk, Nadia Solovieva, Ivan Kalugin, Andrei Andreev, Andrei Daryin, Bernhard Diekmann, Frank Riedel,, Narantsetse, Tserendash, Mayke Wagner

A b s t r a c t

This study presents the results of the palynological and diatom analyses of the sediment core recovered in Hoton-Nur Lake (483701800N, 882004500E, 2083 m) in 2004. Quantitative reconstruction of the Holocene vegetation and climate dynamics in the semiarid Mongolian Altai suggests that boreal woodland replaced the primarily open landscape of northwestern Mongolia at about 10 kyr BP (1 kyrј 1000 cal yr)in response to a noticeable increase in precipitation from 200–250 mm/yr to 450–550 mm/yr. A decline of the forest vegetation and a return to a predominance of open vegetation types occurred after 5 kyr BP when precipitation sums decreased to 250–300 mm/yr. Prior to 11.5 kyr BP diatom concentrations are relatively low and the lake is dominated by planktonic Cyclotella and small Fragilariaceae, suggesting the existence of a relatively deep a d oligotrophic/mesotrophic lake. The great abundance of Staurosirellapinnata from the beginning of the record until 10.7 kyr BP might imply intensified erosion processes in the catchment and this is fully consistent with the presence of scarce and dry vegetation and the generally arid climate during this period. From about 10.7 kyr BP, more planktonic diatom taxa appeared and increased in abundance, indicating that the lake became more productive as diatom concentration increased. This change correlates well with the development of boreal woodland in the catchment. Decrease in precipitation and changes in the vegetation towards steppe are reflected by the rapid increase in Aulacoseira distans from about 5 kyr BP. The Holocene pollen and diatom records do not indicate soil and vegetation cover disturbances by the anthropogenic activities, implying that the main transformations of the regional vegetation occurred as a result of the natural climate change. Our reconstruction is in agreement with the paleomonsoon records from China, demonstrating an abrupt strengthening of the summer monsoon at 12 kyr BP and an associated increase in precipitation and in lake levels between 11 and 8 kyr BP, followed by the stepwise attenuation of the monsoon circulation and climate aridization towards the modern level. The records from the neighboring areas of Kazakhstan and Russia, situated west and north of Hoton-Nur, demonstrate spatially and temporally different Holocene vegetation and climate histories, indicating that the Altai Mountains as a climate boundary are of pivotal importance for the Holocene environmental and, possibly, habitation history of Central Asia.

 

2008 © Elsevier Ltd. All rights reserved.

23.03.2011 16:12 4847
 

Комментарии  

 
#224 Boom Beach Hack 27.08.2015 19:22
Fantastic post but I was wondering if you could write a litte more on this subject?
I'd be very thankful if you could elaborate a little bit more.

Many thanks!

Have a look at my web site - Boom
Beach Hack: https://about.me/BoomBeachHackApk
Цитировать
 
 
#223 Boom Beach Hack 26.08.2015 21:09
Why users still make use of to read news papers when in this technological globe all
is accessible on net?

My web site ... Boom Beach Hack: https://about.me/BoomBeachHackApk
Цитировать
 
 
#222 Boom Beach Hack 25.08.2015 14:56
This information is priceless. Where can I find out more?


My blog :: Boom Beach Hack: https://www.linkedin.com/grp/post/8364516-6037157774603931651?trk=groups-post-b-title
Цитировать
 
 
#221 https://www. 23.08.2015 09:46
Hey there, I think your website might be having browser compatibility issues.
When I look at your blog site in Ie, it looks fine but when opening in Internet Explorer,
it has some overlapping. I just wanted to give you a quick heads up!
Other then that, superb blog!

Visit my weblog; Boom Beach Hack (https://www.linkedin.com: https://www.linkedin.com/grp/post/8364516-6037157774603931651?trk=groups-post-b-title)
Цитировать
 
 
#220 Boom Beach Hack Tool 23.08.2015 07:09
Hello just wanted to give you a quick heads up. The text in your article seem to
be running off the screen in Chrome. I'm not
sure if this is a formatting issue or something to do
with web browser compatibility but I figured I'd post to
let you know. The layout look great though!
Hope you get the issue resolved soon. Cheers

Also visit my site Boom
Beach Hack Tool: https://about.me/BoomBeachHackApk
Цитировать
 
 
#219 whatsapp wallpapers 23.08.2015 00:06
There's definately a lot to know about this issue.

I like all of the points you have made.
Цитировать
 
 
#218 Boom Beach Hack 22.08.2015 18:44
I know this web site offers quality depending articles and additional stuff,
is there any other web page which provides these kinds of things in quality?


Feel free to visit my homepage Boom Beach Hack: https://www.linkedin.com/grp/post/8364516-6037157774603931651?trk=groups-post-b-title
Цитировать
 
 
#217 Boom Beach Hack 20.08.2015 15:07
My brother recommended I would possibly like this blog.
He was once entirely right. This submit actually made my day.
You can not believe just how much time I had spent for this
info! Thanks!

My web page :: Boom Beach Hack: https://www.linkedin.com/grp/post/8364516-6037157774603931651?trk=groups-post-b-title
Цитировать
 
 
#216 Boom beach hack 20.08.2015 09:29
Thank you, I've recently been looking for info approximately this subject for a while and yours is the best I have came
upon till now. But, what about the bottom line? Are you certain in regards to the source?



My web blog; Boom beach hack: https://www.linkedin.com/grp/post/8364516-6037157774603931651?trk=groups-post-b-title
Цитировать
 
 
#215 Boom Beach Diamonds 19.08.2015 15:13
Good day! I could have sworn I've been to this website before but after reading through some of
the post I realized it's new to me. Anyways, I'm definitely
delighted I found it and I'll be bookmarking and checking back often!

Visit my blog post ... Boom Beach Diamonds Hack: https://www.linkedin.com/grp/post/8364516-6037157774603931651?trk=groups-post-b-title
Цитировать
 
 
#214 Boom Beach Hack 19.08.2015 09:32
Heya i'm for the first time here. I found this board and I to find It truly helpful &
it helped me out a lot. I hope to provide something
back and help others such as you aided me.

Feel free to visit my web site :: Boom Beach
Hack: https://www.pinterest.com/pin/380202393520783462/
Цитировать
 
 
#213 Boom Beach Hack 18.08.2015 23:04
It's a pity you don't have a donate button! I'd definitely donate to
this fantastic blog! I suppose for now i'll settle for
book-marking and adding your RSS feed to my Google account.
I look forward to new updates and will talk about this website with my Facebook group.
Chat soon!

my homepage :: Boom Beach Hack: http://www.kiwibox.com/nilufay/blog/entry/132448277/boom-beach-hack-unlimited-resources/?pPage=0
Цитировать
 
 
#212 Horace 18.08.2015 16:25
I got this website from my friend who shared with me on the topic of this
site and at the moment this time I am visiting this site and reading
very informative posts at this place.

Here is my blog post :: Boom Beach Hack
Apk, Horace: https://about.me/BoomBeachHackApk,
Цитировать
 
 
#211 boom Beach hack 18.08.2015 15:24
Heya just wanted to give you a brief heads up and let you know
a few of the images aren't loading properly. I'm
not sure why but I think its a linking issue.

I've tried it in two different web browsers and both show the same results.


Also visit my web blog ... boom Beach hack: https://about.me/BoomBeachHackApk
Цитировать
 
 
#210 Boom Beach Hack 16.08.2015 20:07
I am now not sure where you are getting your info, but good topic.
I needs to spend some time studying much more or figuring out more.

Thanks for fantastic info I was searching for this
info for my mission.

Look into my page - Boom Beach
Hack: https://www.linkedin.com/grp/post/8364516-6037157774603931651?trk=groups-post-b-title
Цитировать
 

Добавить комментарий


Прощай мой дом

JavaScript is disabled!
To display this content, you need a JavaScript capable browser.

О проекте

Всё об удивительном и загадочном мире льда и ледников, ландшафтов и людей и их жизни. Всё о планете Земля и о других планетах.

Интересы: снег, вода, горы, лед, катастрофы, все, климат, рельеф, ледники, приледниковые озёра, геоморфология, гляциология, новые теории и проекты в гляциологии, геологии и геоморфологии, а также качественная музыка и всё интересное и в науке, и в экспедициях, что сочтут для себя важным участники проекта, в природе и в жизни.. ....в общем всё.


Наши новости
Текущая информация для студентов
Ключевые слова
Авторизация



logotipЧитателям, слушателям и просто прохожим: сайт и все материалы, опубликованные на нём -  интеллектуальная собственность владельца сайта, и/или авторов соответствующих материалов. Ссылки на сайт, а также ссылки на авторов публикаций,

trudovaslava.info

(и фотографий, разумеется, тоже) обязательны. Соответствующие законы РФ и других стран известны, лицензии - на месте. Воруют, конечно, и не взирая на копирайты, но мы создали сайт для порядочных людей. Не хочется об этом напоминать, но факт любой недобросовестной ссылки-цитирования или пересказа, во- первых, будет предан широчайшей огласке через сеть всеми популярными научными каналами. А далее, возможно, последует и во-вторых..... Спасибо.

Контакты: ran@mail.tomsknet.ru