{"NOAAStudyId":"22397","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2017-07-11","dataPublisher":"NOAA","dataType":"TREE RING","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/tree-ring","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-tree-22397.xml","doi":"https://doi.org/10.25921/7g7k-fp11","earliestYearBP":168,"earliestYearCE":1782,"entryId":"noaa-tree-22397","funding":[],"investigators":"Gaire, N.P.; Koirala, M.; Bhuju, D.R.; Borgaonkar, H.P.","mostRecentYearBP":-60,"mostRecentYearCE":2010,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/22397","originalSource":null,"publication":[{"abstract":"Treeline shifting in tandem with climate change has widely been reported from various parts of the world. In Nepal, several impacts of climate change on the physical environment have been observed, but study on the biological impacts is lacking. This dendrochronological study was carried out at the treeline in the high mountain slope of Kalchuman Lake (3750-4003 m a.s.l.) area of Manaslu Conservation Area in the central Nepal Himalaya to explore the impact of climate change on the treeline dynamic. Two belt transect plots (size: 20 m wide, > 250 m long) were laid which included treeline as well as tree species limit. Ecological mapping of all individuals of dominant trees Abies spectabilis and Betula utilis was done and their tree cores were collected. Stand character and age distribution revealed an occurrence of more matured B. utilis (max. age 198 years) compared to A. spectabilis (max. age 160 years). A. spectabilis contained an overwhelmingly high population (89%) of younger plants (< 50 years) indicating its high recruitment rate. Population age structure along the elevation gradient revealed an upward shifting of A. spectabilis at the rate of 2.61 m year-1 since AD 1850. The upper distribution limit of B. utilis was found to be stagnant in the past few decades. An increment in plant density as well as upward shifting in the studied treeline ecotones was observed. The temporal growth of A. spectabilis was correlated negatively with the monthly mean and minimum temperature of June to September of the current and previous year. The regeneration of A. spectabilis, on the other hand, was positively correlated with August precipitation and monthly maximum temperature of the month of the current year. The growth and regeneration of A. spectabilis was more sensitive to maximum and minimum temperature rather than average temperature. The growth of the B. utilis was mainly limited by moisture stress during the pre-monsoon season. As these two species presented species-specific responses to climate change with differential pattern in regeneration condition, much wider differences are anticipated in their population status as climate continues to change throughout the century.","author":{"name":"N. P. Gaire, M. Koirala, D. R. Bhuju, and H. P. Borgaonkar"},"citation":"N. P. Gaire, M. Koirala, D. R. Bhuju, and H. P. Borgaonkar. 2014. Treeline dynamics with climate change at the central Nepal Himalaya. Climate of the Past, 10(4). doi: 10.5194/cp-10-1277-2014","edition":null,"identifier":{"id":"10.5194/cp-10-1277-2014","type":"doi","url":"http://dx.doi.org/10.5194/cp-10-1277-2014"},"issue":"4","journal":"Climate of the Past","pages":null,"pubRank":"1","pubYear":2014,"reportNumber":null,"title":"Treeline dynamics with climate change at the central Nepal Himalaya","type":"publication","volume":"10"},{"abstract":null,"author":{"name":"U.K. Thapa, S. St. George, D.K. Kharal, N.P. Gaire"},"citation":"U.K. Thapa, S. St. George, D.K. Kharal, N.P. Gaire. 2017. Tree growth across the Nepal Himalaya during the last four centuries. Progress in Physical Geography. . doi: 10.1177/0309133317714247","edition":null,"identifier":{"id":"10.1177/0309133317714247","type":"doi","url":"http://dx.doi.org/10.1177/0309133317714247"},"issue":null,"journal":"Progress in Physical Geography","pages":null,"pubRank":"2","pubYear":2017,"reportNumber":null,"title":"Tree growth across the Nepal Himalaya during the last four centuries","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":["ABSB","East Himalayan fir","Abies spectabilis (D. Don) Spach","silver fir"],"site":[{"NOAASiteId":"57349","geo":{"geoType":"Feature","geometry":{"coordinates":["28.52","84.86"],"type":"POINT"},"properties":{"easternmostLongitude":"84.86","maxElevationMeters":"3690","minElevationMeters":"3690","northernmostLatitude":"28.52","southernmostLatitude":"28.52","westernmostLongitude":"84.86"}},"locationName":"Continent>Asia>Southcentral Asia>Nepal","mappable":"Y","paleoData":[{"NOAADataTableId":"33512","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>tree-ring>width>ring width"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/nepa046.txt","linkText":"nepa046.txt","urlDescription":"Correlation Stats","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>tree-ring>width>ring width"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/asia/nepa046.rwl","linkText":"nepa046.rwl","urlDescription":"Raw Measurements","variables":[{"cvAdditionalInfo":null,"cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999","cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimeter","cvWhat":"physical property>length>total ring width"}]},{"NOAAKeywords":["earth science>paleoclimate>tree-ring>width>ring width"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/asia/nepa046-noaa.rwl","linkText":"nepa046-noaa.rwl","urlDescription":"Raw Measurements - NOAA Template File","variables":[{"cvAdditionalInfo":"Tree ID: ABSB031A; 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