गढ़वाल के देओरिया ताल से मिला हड़प्पाकालीन सभ्यता का राज

गढ़वाल के देओरिया ताल से मिला हड़प्पाकालीन सभ्यता का राज: Pollen from Deoria Tal, Uttarakhand, was used to characterize long-term and abrupt hydroclimatic conditions in India. Variations in arboreal and non-arboreal taxa were used to reconstruct Holocene regional hydroclimate variability. IChanges in the vegetation community reflect the occurrence of hydroclimate anomalies at 4200, 3100 and 2000 cal yr BP. Decoupling of the climate-vegetation relationship at ∼800 cal yr BP