1、31 4 2011 M8r YBulletin of Soil and Water ConservationVol.31, No.4Aug., 2011nullnull null l : 2010-11-17null null null null null null null : 2011-01-13null null “:S S M71Z_ “null 2 u f null(KZX2-YW-333)null nullTe:(1986null ), 3(qB), 89 g , V 3,1V Y 3sZ TbE-mail: caoweichao imde.ac. cnb 98+GIS MYs曹伟
2、超1, 2, 陶和平1, 孔博1, 刘斌涛1, 孙玉莲1, 2( 1.S S , +610041; 2.S S 3,100049)Knull1: , S =# 1 ub S u,S “SiBsb +, SRTM 3sZE,ArcGIS q/,14 | H,i 1 MYs, 16 smbTV , Z m 3al a , 9 60.58%, = ,H v, M# u VC Asb1oM: ;S; ; ;SDS M : B null null null null null nullcI|: 1000-288X(2011)04-0163-05nullms |: P285. 1, TP79Recogni
3、tion of General Topographic Features in QinghaiBTibet Plateau Based on GISCAO We-i chao1, 2, TAO He-ping1, KONG Bo1, LIU Bin-tao1, SUN Yu-lian1, 2(1.Instituteof Mountain Hazards and Environment, CAS 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China)Abstract: The study of Q
4、inghai null Tibet Plateau has been a focus in geology and geography for researchershome and abroad for a long time. The range of Qinghai null Tibet Plateau is different from administrative div-ision. There are many differences among the ranges based on different criterions and purposes. Based on the
5、characters of topography, we used the data of Aster G null DEM and the method of digital terrain analysis toextract the boundary of Qinghai null Tibet Plateau sem-i automatically with supporting of the ArcGIS, and itstopography was identified and divided automatically. 16 kinds of geomorphic distrib
6、ution maps were ac-quired. The results showed that the dominating topographies were high-elevation hills, low-relief high-hill,middle-relief subalpine and middle-relief high-hill, the areas accounted for 60. 58% in Qinghai null Tibet Plat-eau. The terrain was quite gently in inner plateau, had a lit
7、tle large relief in marginal area, indicating signif-icant difference between plateau and the adjacent regions in topography.Keywords: QinghaiBTibet Plateau; range; topography; relief amplitude; indexnull nullZ Kv1 +, H+ +9 M b TB1 Q K,K,S S sb- p 1:Sr 1/41 ,250 null 104 km21 ,2. 27 null 106 km2 2 ,
8、2.70 null 106 km23 ,2. 6 null 106 km24 , 2. 57 null 106km25b 2. 50null 106 km2 5 500 m)m 3( 2 000 m) nullv v v v 2.3null 9 KDd9 (1) DEM BS =KKWb A “null BSnull9v, A9Fb 1o BSvlbn null nvl 09 ,V5null 5B9 33 null33, u3 g9 , 0sY9 # =KvKl,i | ,vl, T:QFD= H max- H minT: QFD null null nulls3 g vl; H max,Hmin null null nullsYV Us3 gKvKlbN Vn nulln ( 1“(V2)bV2 nul
