globalchange  > 气候变化事实与影响
DOI: 10.1016/j.quaint.2018.12.008
WOS记录号: WOS:000464516500024
论文题名:
Late Pleistocene and Holocene vegetation changes and anthropogenic impacts in the Cauvery delta plains, southern India
作者: Mohapatra, P. P.1,2; Stephen, A.2; Prasad, S.2; Singh, P.1; Anupama, K.2
通讯作者: Singh, P.
刊名: QUATERNARY INTERNATIONAL
ISSN: 1040-6182
EISSN: 1873-4553
出版年: 2019
卷: 507, 页码:249-261
语种: 英语
英文关键词: Cauvery delta ; Pollen ; Holocene ; Vegetation changes ; Anthropogenic effect
WOS关键词: SEA-LEVEL CHANGES ; MODERN POLLEN ; EVERGREEN FORESTS ; TROPICAL PEATS ; CLIMATE-CHANGE ; SEDIMENTS ; EVOLUTION ; RIVER ; MONSOON ; COASTAL
WOS学科分类: Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向: Physical Geography ; Geology
英文摘要:

A 5 m long core from Uttarangudi in the distal plain of Cauvery delta in South India provides evidences of vegetation, climate and anthropogenic activities during the late Pleistocene and Holocene. The pollen catchment area for this region is the localised sources, including the adjoining Tertiary upland plateau. The recorded variation in pollen assemblages and sediments indicates that the environmental conditions have changed over time from aerial oxidising to lacustrine or ponded environment. The lack of pollen records from 17,802 cal BP until 11,535 cal BP suggests severe drier conditions and an extremely patchy, species-poor Tropical Dry Evergreen Forest (TDEF) vegetation community associated with an arid climate. Between 11,535 and 8487 cal BP, partial climatic amelioration appears to have occurred, and the trend become humid until 7034 cal BP characterised by the expansion of the TDEF vegetation and strengthening of the monsoon precipitation. The period from 7034-3553 cal yr BP recorded a regressive transition of the forest taxa influenced by a weakened monsoon precipitation and enhanced anthropogenic activity. The subsequent increase of disturbance signals post 3553 cal yr BP is in agreement with independent archaeological evidences obtained from this region.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/130196
Appears in Collections:气候变化事实与影响

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作者单位: 1.Pondicherry Univ, Sch Phys Chem & Appl Sci, Dept Earth Sci, Kalapet 605014, Puducherry, India
2.French Inst Pondicherry, Dept Ecol, Lab Palynol & Paleoecol, 11 St Louis St, Pondicherry 605001, India

Recommended Citation:
Mohapatra, P. P.,Stephen, A.,Prasad, S.,et al. Late Pleistocene and Holocene vegetation changes and anthropogenic impacts in the Cauvery delta plains, southern India[J]. QUATERNARY INTERNATIONAL,2019-01-01,507:249-261
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