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Dendroclimatic study in Nepal Himalaya: an update 1 PAGES 4 th Asia 2k Workshop, RIHN, Kyoto, Japan 19-20 March 2015
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Narayan Prasad Gaire Sanjaya Bhandari Uday Kuwar Thapa Dinesh Raj Bhuju Madan Koirala Santosh Kumar Shah Rupraj Timilsena Bimal Sharma 2 Research Team
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Dendrochronological sampling sites 3 Studies in progress
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Dendrochronological sampling sites 4
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Tsuga dumosa RW chronology from Apinampa CA Bhandari et al (in preparation) 5
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Ring growth response with climate Fig: Correlation coefficient analysis of the ring width growth of Tsuga dumosa and the average annual temperature and precipitation. * * * Significant & Positive 6
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Spring temperature in ANCA region. Fig: Reconstructed mean temperature of pre monsoon months 1702-1720 1741-1750 1922-1974 1721-17401751–17651819-18301840-1857 1882-1888 1912-1922 7
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Spatial coverage Fig: Correlation between CRU and Reconstructed average Temp of March-May 8
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Premonsoon precipitation 9 Fig: Reconstructed mean precipitation of pre monsoon months 1721-17401751-17651819-1830 1840-1857 1882-18881912-1922 1741-1750 1780-17881800-1818 1975-2010 1922-1974
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Abies pindrow RW chronology= Khaptad NP (Thapa et al 2013, Banko Jankari) 10
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Growth-climate Relationship 11
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Studies in progess 12
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Betula utilis –Apinampa CA 13
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Betula utilis= Rara NP 14
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Cedrus deodara Rara NP 15
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Larix grifithiana = Kanchanjungha CA 16
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Juniperus recurva = Kanchanjungha CA 17
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Conclusions Few new chronologies having dendro climatic potential developed Temperature reconstruction showed several cooling and warming trends Analysis of many chronology is in progress What Next River basin wise (Watershed based) hydro climate reconstruction using multiproxy data of multiples species 18
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Acknowledgements Research Institute for Humanity and Nature, Japan Workshop organizing team Nepal Academy of Science and Technology (NAST) CDES, DNPWC, APNC, DHM, Department of Forest 19
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