• 责任者：Yu Kaifeng (Laboratory of Earth Surface Process and Environment ; School of Geographic and Oceanographic Sciences ; Nanjing University ; Nanjing 210093 ; China) ; Lu Huayu
• 刊名：Quaternary Sciences
• 出版年：2013
• 卷期：33(2)
• 关键词：沙地 ; sandy land ; 古气候 ; paleoclimate ; 全新世 ; Holocene ; 中国 ; China
• 页码：p.293-302
• 图表：illus., 1 table, 86 refs.
• 分类号：1400
• issnNo：ISSN1001-7410
• isbnNo：CN11-2708/P

Dune fields of arid and semi-arid regions of Northern China, including Mu Us field, Otindag, Horqin, Songnen, Hunlunbuir and some parts of Badain Jaran and Tengger deserts, Loess Plateau （32°- 50°N, 100°- 135 °E）, are situated at margin of the area dominated by East Asian Monsoon circulation,and the environment is quite sensitive to paleoclimate change. Many paleoclimatic reconstructions have been undertaken in this region, typically from pollen, peat bog, loess- paleosol sequences,lake sediments etc,and most of these records are in good chronology sequence.  In this paper,we collect and analyze the paleoclimate proxy data from more than 300 studies,datasets and relevant atlas. We find that, compared with the modern annual temperature and precipitation, the temperature decreased by 5 - 11℃ and the precipitation decreased by 180- 350mm during the Last Glacial Maximum（LGM,26- 16ka）; the temperature increased by 1.0- 3. 5% ,and the precipitation increased by 30 -400mm in Mid-Holocene Optimum（ HO, 9 - 5ka）. With the comparison to the numerical simulation results, we have further discussed the mechanisms of the paleoclimate change in the LGM and HO.  Our investigation shows that the paleoclimate records are not in complete consistency with the numerical simulation results; at the same time ,more integrated and precise dated loess-paleosol sections have to be found,especially for the LGM in this monsoon marginal region; in addition, we need to pay more attention to the high precis numerical simulations with regional climate models in order to fully understand the past climate changes Northern China. ion paleoclimate in dune fields in.