24 2 2 0 0 4 3 QUATERNARY SCIENCES Vol. 24, No. 2 March, 2004 1001-7410(2004) 02-184 - 07 (, 210008) 2201368A. D. 859, ; 289,, (581907A. D. ),,,25 % (13681911A. D. ),, P642. 131, S151 A?? ( )??,,,,,,, 1,,,, :,, 1), :,( ) 43, 20 2) (,, ),,, [1 ], 2Π5,,, :426A. D. 6 70,4,, [2 ], [3 ],,,, [2 ],, (581A. D. ) 420 [4 ], [2,5,6 ], ( 45km), :, [6 ],, [3 ] [2 ] : 66 2003-11 - 23,2003-12 - 26 1) 2)
2 : 185 1 Table 1 The variations of ruling nationalities ruled on the Loess Plateau ( ) ΠA. D. ( ) ΠA. D. 220265 (220265) 265316 (265316) 304318329 319350 337370 351394 (317420) 384409 384417 385431 407431 310376 ( ) 386534 534549 (420581) 535556 550577 557581 (581618) (618907) 581618 618907 907923 895923936 936946 947950 (907960) 951960 951979 9071038 9169471125 9601127 (9601127) 90710381227 9471125 () 10381227 (11271279) () 11151234 (12711368) (13681644) (16441911) 12711368 13681644 16441911 (609A. D. ),819,4 602 [4] (618626A. D. ),200 [4],,
186 2 0 0 4 1), 1), 2) 200,, [3],,,, 1, 1, 1 148 (2201368A. D. ),,1 148, 859, 265,326,( 26 ) 27,241 289,, 96,16,10,167 :,, ;,,,,,,,,,,,,,,,,,,,,, () ( ),, 3) ( 20km),,,, 4) [7 ],: 25 %,20 %, 45 %,,:,,,,, ( ) 9. 92 5),500 [8],,,,,,,,,,, 6),,10 [8 ],, 2,,,,(820A. D. ) 1 576, (2A. D. ) 5 959 [4 ] 10. 2121. 4 7) [4 ] 13,,1Π71Π4,,,,,;, 1) 2) 3) 4) 5) 6) 7) 1 = 666. 6 m 2,1
2 : 187,,,,,,,,,,;,, ;,, [9 ],,,,,;, :,,,,,, :654A. D.,,,, 1) ;836A. D.,,,, 2) 20 70, 48cm 3237cm 2. 9cm (),,,,,: :,,,757A. D. :, : ( ),, ( ) 10611065A. D., :,,, 11,,,, (994A. D. ),,:, 3),, ;,?, [10 ] 413A. D. ( 50km),,:,,,, 4) ( ) (, ),,,(822A. D. ),,, 5), 3), :,;,,, :,,,,,,;,,,,,,,,,,,,,,,, 1).,. 1708 2).,. 1883 3) 4) 5)
188 2 0 0 4,,,,,;,1850 1), (1471A. D. ),,,,, 2),,,,543, (13811626A. D. ) 245,, 5 0316 660 [4 ],(1655A. D. ), 1 403 [4 ],,,1711A. D. 2 462,1753A. D. 1. 028,1833A. D. 3. 989,1911A. D. 3. 681 [4 ],,,,,,,,, 16501700A. D. [9 ],, 1 4002 400,,, 586 9 :1) ;2) ;3) 10 ;4) ;5) ; 6) ;7) 10mm ;8) ; 9), [11,12 ] 1,4,5, [12,13 ] 1 4 1,2, 48 ( ),48 ( 1,2 (2 K < 1,,, ;,,,, ;,,1 : (), (4 ),, 1,1 1 48 1. 2. 3. 4. Fig. 1 Hydrothermal condition of 48 localities on the Loess Plateau indicated by plant cover,,669, [1416 ],K 1, ) (1 K < 2) ; 3. 5),, 1) 1 = 666. 6 m 2, 2)
2 : 189,,,,, 3, 8. 60 %,,51. 7 %, 4. 0 %,12. 4 % [17 ] 3,,, K = 1. 79, 3 10500m,10150m,150400m,, 1988, : > > >,,,,,,,,,,,,,,,, :,,,,,, [18 ],,,,, [18 ] ( References) 1. (). : (),1975. 176 Editing Group ofthe Historical Atlas of China. The Historical Atlas of China (No. 3). Shanghai : Cartographic House of China, 1975. 1 76 2.. :,1987. 1268 Wang Dahua. The Rise and Decline in Society of Ancient Guanzhong Region. Xi an : Shaanxi People s Press, 1987. 1268 3.. :,1998. 1331 Zhou Weizhou. A General History of Shaanxi : The Volume of Nationalities. Xi an : Shaanxi Normal University Press, 1998. 1331 4.. :,1980. 1558 Liang Fangzhong ed. The Statistics of Households, Population, Farmland and Farmland Taxes at Various Times in China. Shanghai : Shanghai People s Press, 1980. 1558 5.. :,1989. 11 042 Guo Qi ( Editor2in2Chief ). Five Thousand Years of Shaanxi. Xi an : Shaanxi Normal University Press, 1989. 11 042 6.. (),1989, (3) : 6667 Li Xiangqun. Cross generation marriage in the imperial family of the Tang Dynasty. Journal of Shaanxi Normal University ( Philosophy and Social Sciences), 1989, (3) : 6667 7.., 1981, (1) : 2133 Shi Nianhai. The Loess Plateau and the changes in the distribution of its agricultural, forestry and pastoral areas. Historical Geography, 1981, (1) : 2133 8.. :,1980. 1423 Shang Yue ( Editor2in2Chief ). Essentials of the Chinese History. Beijing : People s Press, 1980. 1423 9.., 1973, (2) : 168189 Chu Kochen. A preliminary study on the climatic changes since the last 5 000 years in China. Scientia Sinica, 1973, (2) : 168189 10.., 1973, (1) : 3541 Hou Renzhi. The study of variations of the Maowusu Desert based on relics of the ancient city on the Hongliu River. Cultural Relics, 1973, (1) : 3541 11,..,1983,3(2) : 95102 Liu Duosen, Cai Weiqi. On the numerical identification of hydrothermal condition for different types of vegetation in China. Scientia Geographica Sinica, 1983, 3 (2) : 95102 12,.. :,1987. 1399 Liu Duosen, Zeng Zhiyuan eds. Mathematical Methods and Modelling in Soil and Environment Research. Beijing : Agriculture Press, 1987.
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