Annual variation in PDSI since 1897 AD in the Tengger Desert,Inner Mongolia,China, as recorded by tree-ring data |
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| Institution: | 1. College of Life Sciences, Beijing Normal University, Beijing 100875, China;2. Hebei University of Engineering, Handan 056038, China;3. Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, Beijing Normal University, Beijing 100875, China;4. State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing 100875, China;1. College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou 730070, China;2. Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Northwest Normal University, Lanzhou 730070, China;1. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi''an 710075, China;2. School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney 2033, Australia;3. Department of Geography and International Centre for China Development Study, The University of Hong Kong, Pokfulam Road, Hong Kong, China;4. School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China;5. Institute of Nihewan Archaeology, Hebei Normal University, Shijiazhuang 050024, China;6. Department of Social Sciences, The Education University of Hong Kong, 10 Lo Ping Road, Tai Po, Hong Kong, China;7. College of Urban and Environmental Sciences, Central China Normal University, Wuhan 430079, China;8. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;9. College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China;10. College of Earth Sciences, University of Chinese Academy of Sciences, 19A Yuquan Rd, Shijingshan District, Beijing 100049, China;11. Department of Earth Sciences, The University of Hong Kong, Hong Kong, China;12. Guangzhou Institute of Geography, Guangzhou 510070, China;1. MOE Key Laboratory of Western China’s Environmental Systems, College of Earth Environmental Sciences, Lanzhou University, Lanzhou, China;2. School of Earth Sciences, Lanzhou University, Lanzhou, China;1. Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel;2. Department of Natural Resources, Agricultural Research Organization, Volcani Ctr, Bet Dagan 50250, Israel;3. Faculty of Pure & Applied Sciences, Open University of Cyprus, 2252 Latsia, Nicosia, Cyprus;4. Department of Biological Sciences, University of Cyprus, 1678 Nicosia, Cyprus;5. Division of Plant Biology, Department of Biology, University of Patras, 265 00 Patras, Greece |
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| Abstract: | Tree-ring data can be used to provide high-resolution records of climate variability in areas like the Tengger Desert where few other records exist. In the present work, three tree-ring-width chronologies in the Luoshan Mountains in north-western China showed synchronous variation. These were averaged to develop a comprehensive chronology that was then used to reconstruct the Palmer Drought Severity Index (PDSI) since 1897 AD for the grid point N 38°45′, E 103°45′ in the Tengger Desert. The annual PDSI and tree-ring widths in the Changlingshan Mountains at the southern margin of the Tengger Desert matched well (r = 0.50, p < 0.001), indicating the reliability of the reconstruction. The annual PDSI dry and wet periods were consistent with recorded lake sediments in the northern Mu Us Desert. The dry periods in the Tengger Desert were compatible with the relatively low PDSI in the Ortindag Sand Land in eastern Inner Mongolia. Abrupt climate variability occurred around 1922, 1933, 1934, 1935 and 1936, in line with abrupt changes in the Asian monsoon system in the 1930s. Distinct periods of about 2–4 years and 5–7 years were evident in the reconstructed PDSI. |
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| Keywords: | Abrupt climate variability Asian monsoon Climate reconstruction Dendrochronology Desert evolution |
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