noaa-lake-21810 Zhuye Lake, China Grain Size and Pollen Data Since the Late Glacial Li, Y.; Wang, N.; Morrill, C.; Cheng, H.; Long, H.; Zhao, Q. Zhuye Lake, China Grain Size and Pollen Data Since the Late Glacial 2017-03-14 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/21810 Investigator Y. Li Investigator N. Wang Investigator C. Morrill Investigator H. Cheng Investigator H. Long Investigator Q. Zhao earth science paleoclimate paleolimnology grain size mode,sediment,null,micrometer,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 13C,sediment,null,per mil PDB,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology grain size standard deviation,sediment,null,micrometer,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology nitrogen,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology silt,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology grain size mean,sediment,null,micrometer,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology clay,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology sand,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology carbon/nitrogen,sediment,null,dimensionless,null,paleolimnology,null,null,N,total organic carbon/total organic nitrogen earth science paleoclimate paleolimnology grain size median,sediment,null,micrometer,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology organic carbon,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology grain size class,sediment,null,dimensionless,null,paleolimnology,null,null,N,(Silt sand + clay)/sand earth science paleoclimate paleolimnology grain size skewness,sediment,null,dimensionless,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology calcium carbonate,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology grain size kurtosis,sediment,null,dimensionless,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology population abundance earth science paleoclimate paleolimnology physical properties geoscientificInformation Monsoon 13090 cal yr BP 14 cal yr BP Complete 39.05 39.05 103.6689 103.6689 1309 1309 Continent Asia Eastern Asia China Zhuye Lake>LATITUDE 39.05>LONGITUDE 103.6689 None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Yu Li, Nai'ang Wang, Carrie Morrill, Hongyi Cheng, Hao Long, Qiang Zhao 2009 Review of Palaeobotany and Palynology 154 1-4 54-64 10.1016/j.revpalbo.2008.12.005 http://www.sciencedirect.com/science/article/pii/S0034666708001814

This paper contributes to an understanding of the relationship between pollen assemblages and grain-size in north-west China. Based on the relationship, we have reconstructed the environmental and vegetation history from sediments from Zhuye Lake, located in the marginal area of the Asian monsoon. During the Late Glacial (before ~13 cal ka BP), the high content of sand is correlated with low pollen concentrations, which implies an arid environment and low vegetation cover in the drainage. The relatively high percentages of Pinus and Quercus pollen, derived from nearby high elevations, may indicate particularly low vegetation cover in the lower part of the watershed. Between 13 and 7.7 cal ka BP, increasing silt content is correlated with high percentages of Picea pollen. Fluvial flow and effective humidity at high elevations, as well as lake-level, all increase. Following this, an abrupt environmental change which is likely caused by some change in lake geomorphology persists for about 300 years. The Holocene Optimum is between 7.4 and 4.7 cal ka BP in this region. Pollen concentrations reach their highest values in the section. The abundant herb pollen reflects the high vegetation cover in the lower part of the watershed. The silt and the fine components in the sediments are high and stable indicating optimal moisture conditions. Between 4.7-1.5 cal ka BP the lake-level fell and silty peat was formed at the site. The pollen concentration decreased in contrast to the high pollen concentration in the Holocene Optimum. In the last 1500 years the lake-level fell while terrestrial sediments were deposited at the site. In this phase Chenopodiaceae, Nitraria and Ephedra reach their highest values in the section reflecting an arid environment. In Zhuye Lake and the surrounding area environmental changes are mainly controlled the combined effects of the East Asian monsoon and the Westerlies since the Late Glacial. In the last ~1.5 cal ka BP the intensive arid trend may be correlated with changes in the Westerlies. STUDY NOTES: Pollen assemblages and grain-size data from two sections collected in Zhuye Lake, north-west China, since the late Glacial.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/china/zhuye2009pollenpct.txt Formatted Text Data File; Zhuye Lake Pollen Percentage Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/china/zhuye2009qth02gs.txt Formatted Text Data File; Zhuye Lake Section QTH02 Grain Size Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/china/zhuye2009qth01gs.txt Formatted Text Data File; Zhuye Lake Section QTH01 Grain Size Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/china/zhuye2009pollenconc.txt Formatted Text Data File; Zhuye Lake Pollen Concentration Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11