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Paleo-vegetation of the loess plateau and its reconstruction , northwestern China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2004年第01期
Page:
85-88
Research Field:
Publishing date:

Info

Title:
Paleo-vegetation of the loess plateau and its reconstruction , northwestern China
Author(s):
LI Bing-cheng1; 2
1 .Department of Geology , Northwest University , Xi'an 710069 , China ;2 .School of Environmental Sciences and Engineering , Chang'an University , Xi'an 710054, China
Keywords:
the loess plateau; paleo-vegetation; reconstruction
PACS:
P642
DOI:
-
Abstract:
The beautiful landscape of the loess plateau in northern China could be primarily reconstructed by means of restoration of its original vegetation that was currently lost due to mankind' s destruction.The first task to do so involves clarifying the contentious type of the original vegetation through pollen spore analyses.Temporal and spatial changes of the paleo-vegetaion types in the loess plateau were figured out in terms of previous specific pollen spore-based studies.The paleo-soil was the product of the warm and humid climate predominated by the summer monsoon during the interglaciation , implicating a luxuriant period of vegetation , whereas the loess was related to the arid and cold climate predominated by the winter monsoon during the glaciation, indicating a withering period of vegetation.During the Banpo man time or in the Middle Holocene , 5 000～ 6 000 Bp , the climate within the modern glaciation best fitted vegetation and the intrusion of some sub-tropic trees was postulated to have taken place .Yet the Lanzhou area , Gansu Province , kept being desert or steppes for past 10 000 years .Consequently , the reconstruction of vegetation to its primary state should be principally implemented in consideration of its original distribution .Specifically , the southeast part of northwestern China should starts with forest and the middle part better with both forest and steppes while the west part can only be constructed as steppes .

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Last Update: 2004-03-20