3 Huang C C, Pang J L, Huang P, et al. Holocene climatic events on the Loess Tableland in the western Guanzhong Basin, China. Arid Land Geogr, 2002, 25: 10-15
8 Chun X, Chen F H, Fan Y X, et al. Formation of Ulan Buh desert and its environmental changes during the Holocene. Front Earth Sci China,2008, 2: 327-332？？
10 Wintle A G, Murray A S. A review of quartz optically stimulated luminescence characteristics and their relevance in single-aliquot regeneration dating protocols. Radiat Meas, 2006, 41: 369-391？？
[11]
11 Murray A S, Olley J M. Precision and accuracy in the optically stimulated luminescence dating of sedimentary quartz: A status review. Geochronometria, 2002, 21: 1-16
13 Zheng Y E, Zhou L P, Zhang J F. Optical dating of the upper 22 m of cored sediments from Daihai Lake, northern China. Quat Geochr,2010, 5: 228-232？？
[14]
14 Zhao H, Lu Y C, Wang C M, et al. Re-OSL dating of aeolian and fluvial sediments from Nihewan Basin, northern China and its environmental application. Quat Geochr, 2010, 5: 159-163？？
17 Kale V S, Singhvi A K, Mishra P K, et al. Sedimentary records and luminescence chronology of Late Holocene palaeofloods in the Luni River, Thar Desert, northwest India. Catena, 2000, 40: 337-358？？
[18]
18 Benito G, Diez H A, Villalta M F. Flood response to solar activity in the Tagus basin (Central Spain) over the last millennium. Clim Change,2004, 66: 27-28？？
[19]
19 Benito G, Thorndycraft V R. Palaeoflood hydrology and its role in applied hydrological sciences. J Hydrol, 2005, 313: 3-15？？
[20]
20 Sridhar A. A mid-late Holocene flood record from the alluvial reach of the Mahi River, Western India. Catena, 2007, 70: 330-339？？
[21]
21 Thorndycraft V R, Benito G. The Holocene fluvial chronology of Spain: Evidence from a newly compiled radiocarbon database. Quat Sci Rev, 2006, 25: 223-234？？
[22]
22 Sheffer N A, Rico M, Enzel Y, et al. The Palaeoflood record of the Gardon River, France: A comparison with the extreme 2002 flood event. Geomorphology, 2008, 98: 71-83
[23]
23 Huang C C, Pang J L, Zha X C, et al. Extraordinary floods of 4100-4000 a B.P. recorded at the late neolithic ruins in the Jinghe River gorges, middle reach of the Yellow River, China. Paleogeogr Paleoclimatol Paleoecol, 2010, 289: 1-9？？
25 Huang C C, Pang J L, Zha X C, et al. Extraordinary floods related to the climatic event at 4200 a BP on the Qishuihe River, middle reaches of the Yellow River, China. Quat Sci Rev, 2011, 30: 460-468？？
[26]
26 Duller G A T. Distinguishing quartz and feldspar in single grain luminescence measurements. Radiat Meas, 2003, 37: 161-165？？
[27]
27 Murray A S, Wintle A G. Luminescence dating of quartz using an improved single-aliquot regenerative-dose protocol. Radiat Meas, 2000,32: 57-73？？
29 Prescott J R, Hutton J T. Cosmic ray contributions to dose rates for luminescence and ESR dating: Large depths and long-term time variations. Radiat Meas, 1994, 23: 497-500？？
[30]
30 Lai Z P. Chronology and the upper dating limit for loess samples from Luochuan section in the Chinese Loess Plateau using quartz OSL SAR protocol. J Asian Earth Sci, 2010, 37: 176-185？？
32 Lai Z P, Z?ller L, Fuchsb M, et al. Alpha efficiency determination for OSL of quartz extracted from Chinese loess. Radiat Meas, 2008, 43:767-770？？
[33]
33 Adamiec G, Aitken M J. Dose-rate conversion factors: Update. Ancient TL, 1998, 16: 37-50
[34]
34 Bailey R M, Arnold L J. Statistical modeling of sing grainquartz De distributions and an assessment of procedures for estimating burial dose. Quat Sci Rev, 2006, 25: 2475-2502？？
[35]
35 Li S H. Identification of well-bleached grains in the optical dating of quartz. Quat Sci Rev, 2001, 20: 1365-1370？？
[36]
36 Zhang J F, Zhou L P, Yue S Y. Dating fluvial sediments by
