Vegetation and climate in Garhwal Himalaya during Early Holocene: Deoria Tal
DOI:
https://doi.org/10.54991/jop.1997.1355Keywords:
Palynology, Palaeovegetation, Palaeoclimate, Garhwal Himalaya, Early-Holocene, IndiaAbstract
Pollen analysis of 1.5 m deep profile from the western flank of Deoria Tal (Profile-II), situated in temperate belt of Garhwal Himalaya has unravelled the vegetation and climate of Early Holocene. The vegetation, traced back to about 6000 years and 14C dated 2710±150 years at 55-65 cm depth, comprised chiefly the Oak dominated forests associated with other broad-leaved taxa such as Betula, Alnus, Rhododendron, Carpinus, Ulmus, etc. Such an arboreal forest composition reflects the warm-temperate humid climate prevalent in the region. A change to cooler climatic conditions is registered between 3500-3600 years B.P., as evidenced by the decline in Oak - the chief component, as well as in other associated broad-leaved elements with a corresponding rise in grasses and sedges. Anthropogenic activities are also recorded during this period, inferred by the first appearance of Cerealia-type pollen and encountered culture pollen. Subsequently, around 1,700 years B.P., the restoration process of Oak forests commenced, thus indicating the amelioration in climatic conditions.
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Bhattacharyya A 1988. Vegetation and climate during Post glacial period in the vicinity of Rohtang Pass, Great Himalayan Range. Pollen Spores 30: 417-427.
Chauhan MS & Sharma C 1996. Pollen analysis of mid-Holocene sediments from Kumaon Himalaya. Proc. Symp. NW Himalaya & Foredeep, Geol. Surv. India Spl Publ.: 257-269.
Chauhan MS, Sharma C & Rajagopalan G (1997. Vegetation and climate during Late-Holocene Period in Garhwal Himalaya. Palaeobotanist 46(1, 2): 211-216.
Erdtman G 1943. An introduction to pollen analysis. Chronica Botanica Co., Waltham, Mass.
Gupta A & Sharma C 1993. Recent pollen spectra from Nachiketa Tal, Garhwal Himalaya. Geophytology 23: 155-157.
Gupta HP 1977. Pollen analytical reconnaissance of Post glacial deposits from subtropical zone in Nainital District, Kumaon Himalaya. Palaeobotanist 24: 215-244.
Gupta HP & Khandelwal A 1982. Late Holocene palynology from the Lake in Sat Tal Valley, district Nainital, Kumaon Himalaya, U.p. Geophytology 12: 313-321.
Sharma C 1985a. On the Late Quaternary vegetational history in Himachal Pradesh-3. Parasram Tal. Geophytology 15: 206-218.
Sharma C 1985b. Recent pollen spectra from Garhwal Himalaya. Geophytology 15: 87-97
Sharma C & Chauhan MS 1988a. Studies in the Late-Quaternary vegetational history in Himachal Pradesh-4. Rewalsar Lake-II. Pollen Spores 30: 395-408.
Sharma C & Chauhan MS 1988b. Palaeoenvironmental inferences from the Quaternary palynostratigraphy of Himachal Pradesh and Kumaon, India. Proc. Indian natn. Sci. Acad. 54A: 510-523.
Sharma C & Gupta A 1995. Vegetational history of Nachiketa Tal, Garhwal Himalaya, India. J. Nepal geol. Soc. 10: 29-34.
Sharma C, Chauhan MS & Rajagopalan G (in Press). Vegetation and climate in Garhwal Himalaya during last 4,000 years B.P. J. Nepal geol. Soc.
Sharma C & Singh G 1974a. Studies in the Late Quaternary vegetational history in Himachal Pradesh-1. Khajiar Lake. Palaeobotanist 21: 144-162.
Sharma C & Singh G 1974b. Studies in the Late Quaternary vegetational history of Himachal Pradesh-2. Rewalsar Lake. Palaeobotanist 21: 321-338.
Vishnu-Mittre, Gupta HP & Robert RD 1967. Studies of the Late Quaternary vegetational history of Kumaon Himalaya. Curr. Sci. 36: 539-540.
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