Title: Study on Mire Development and Palaeoenvironment Change since 9.0 ka B.P. in the East Part of the Xiaoxinganling Mountains
Abstract:The paper makes a preliminary approach on relationship between mire development and paleogeographical environment change since the Holocene in the Xiaoxinganling mountains by means of 14C dating, X-ra...The paper makes a preliminary approach on relationship between mire development and paleogeographical environment change since the Holocene in the Xiaoxinganling mountains by means of 14C dating, X-ray diffraction of clay mineral, analyses of spore-pollen and plant residual. The vegetation succession can be divided into 5 stages as follows, coniferous forest state at 9 000~8 300 a B.P.; needle-broad-leaved mixed forest stage at 8 300~6 800 a B.P.; broad-leaved forest dominated by Querous Ulmus and Juglans at 6 800~3 050 a B.P.; broad-leaved forest dominated by Betula at 3 050~2 350aB.P.; needle-broad leaved mixed forest dominated by Pinus at 2 350~0 a B.P.. The close relationship was found between mire development and paleo- environment in the five periods, i.e. the breeding development in the early period of the Early Holocene, the germinating development in the early period of the Middle Holocene, the vigorous development of eutrophic mire and breeding development of mesotrophic mire in the middle period of the Middle Holocene, the further expanding development and germinating development of mesotrophic mire in the middle period of the Middle Holocene, the formation period of oligotrophic mire in the Late Holocene. The oldest mire developed in the Early Holocene i.e. at about 7 095 a B.P.The bog-section of 12 branch line, Tanghongling forest farm can be considered as the standard profile of the Holocene in this area. The mire development passes from eutrophic through mesotrophic to oligotrphic mire stages. This is made by the zonality law of mire development. Although the paleoenvironment change frequently in the whole Holocene, but it still favorable to the mire formation development.Read More
Publication Year: 2002
Publication Date: 2002-01-01
Language: en
Type: article
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Cited By Count: 6
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