• postglacial vegetation history as recorded from the subalpine lake ribno (nw rila mts), bulgaria

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 783
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a pollen analysis conducted on a 600 cm core from lake ribno (2184 m) in the northwestern rila mountains, supplemented by 13 radiocarbon dates, has revealed the basic stages in its postglacial vegetation dynamics. the lateglacial vegetation, composed of artemisia, chenopodiaceae and poaceae, with stands of pinus and juniperus-ephedra shrubland, dominated in the stadials and partly retreated during the bølling/allerød interstadial (14700–12900 cal. yrs. bp). the afforestation in the early holocene (11600–7800 cal. yrs. bp) started with pioneer betula forests, with groups ofpinus and juniperus at mid-high altitudes, and quercus forests with tilia, ulmusfraxinus, corylusbelow the birch zone. a coniferous belt composed of pinus sylvestris, p. peuce and abies was shaped under the conditions of a more humid climate (7800–5800 cal. yrs. bp). the last trees that invaded the study area were fagus after 4300 cal. yrs. bp and picea abies after 3400 cal. yrs. bp. evidence for destructive changes in the vegetation and indications of agricultural and stock-breeding activities (pollen of triticum, secale, plantago lanceolata, rumex, juglans) was continuously recorded since the late bronze age (3400–3200 cal. yrs. bp). the postglacial vegetation history in the northwestern rila mountains demonstrated close similarities with that of the northern pirin mountains.

سوال خود را در مورد این مقاله مطرح نمایید :

با انتخاب دکمه ثبت پرسش، موافقت خود را با قوانین انتشار محتوا در وبسایت تی پی بین اعلام می کنم
مقالات جدیدترین ژورنال ها