| 青藏高原北缘公格尔山地区地形梯度的剖析 |
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| 引用本文： | 赵尚民,程维明,周成虎,陈曦.青藏高原北缘公格尔山地区地形梯度的剖析[J].地球信息科学,2009,11(6):753-758. |
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| 作者姓名： | 赵尚民 程维明 周成虎 陈曦 |
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| 作者单位： | 1.中国科学院新疆生态与地理研究所, 乌鲁木齐 830011;
2. 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室, 北京 100101;
3. 中国科学院研究生院, 北京 100049 |
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| 基金项目： | 国家自然科学基金项目(40871177);国家重点实验室基金项目“中国地貌空间格局图谱研究”(O88RA304SA)资助 |
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| 摘 要： | 本文以青藏高原北缘西昆仑山脉的公格尔山地区为试验区域,基于SRTM-DEM数据,采用线状地形剖面和带状地形剖面的研究方法,对试验区从公格尔山顶到塔里木盆地的地形梯度进行了研究,并探讨了地形梯度与隆升过程之间的关系。研究结果表明:(1)线状地形剖面清晰直观,操作简单;带状剖面法能较好地反映区域的地形起伏状况。若将两种方法联合起来共同进行区域地形研究,则会获得更好效果。(2)从塔里木盆地到公格尔山顶,地形抬升共分3个梯度:分别是从海拔高度2 000m左右上升到约4 500m,从约4 500m上升到将近6 000m,从将近6000m上升到约7500m。地形抬升的不同梯度可能对应着公格尔山晚新生代地貌形成过程的不同隆升过程;而每个抬升梯度的拐点,则对应着不同隆升过程形成海拔高度的分界点。
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| 关 键 词： | 地形梯度 公格尔山 线状地形剖面 带状地形剖面 SRTM-DEM数据 |
| 收稿时间： | 2009-10-04; |
Analysis on the Topographic Gradient and Geographical Meaning of Mt.Konggur,in the Northern Edge of Qinghai-Tibet Plateau |
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| ZHAO Shangmin,CHENG Weiming,ZHOU Chenghu,CHEN Xi.Analysis on the Topographic Gradient and Geographical Meaning of Mt.Konggur,in the Northern Edge of Qinghai-Tibet Plateau[J].Geo-information Science,2009,11(6):753-758. |
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| Authors: | ZHAO Shangmin CHENG Weiming ZHOU Chenghu CHEN Xi |
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| Institution: | 1. Xinjiang Institute of Ecology and Geography,CAS,Urumchi 830011,China;
2. State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China;
3. Graduate University of Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | Taking Mt.Konggur,of West Kunlun Mountains in the northern edge of Qinghai-Tibet Plateau as an experiment area,utilizing the digital elevation model data acquired by Space Shuttle RadarTerrain Mission(SRTM),this paper makes a research on the topographic gradient from Mt.Konggur to Tarim Basin using the methods of linear terrain profile and swath terrain profile.This research not only probes into the relation between the topographic gradient and uplifting process in the experiment area,but also makes a comparison between linear terrain profile and swath terrain profile.Research results show that:(1)Linear terrain profile is clear,readable and has simple process;whereas,swath terrain can represent the topographic relief condition in the area.Hence,the effect will be better if we study the topography by combining these two methods.(2)From Tarim Basin to the peak of Mt.Konggur,the elevation rise can be divided into 3 gradients: from 2 000m to about 4 500m,from 4 500m to about 6 000m,and from about 6 000m to about 7 500m.The different gradient of elevation rise perhaps corresponds to the different uplift process in the geomorphologic evolving process of Mt.Konggur in Late Cenozoic;the inflexion of every elevation rise gradient may be the dividing point of different uplift process. |
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| Keywords: | topographic gradient Mt Konggur linear terrain profile swath terrain profile SRTM-DEM |
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