青藏铁路格拉段典型沙害路段风沙地貌专题图编制

干旱区地理 ›› 2015, Vol. 38 ›› Issue (4): 713-718.

青藏铁路格拉段典型沙害路段风沙地貌专题图编制

张克存, 张号, 屈建军, 王军战, 安志山

中国科学院寒区旱区环境与工程研究所敦煌戈壁荒漠生态与环境研究站, 沙漠与沙漠化重点实验室, 甘肃兰州 730000

收稿日期:2014-11-15 修回日期:2015-03-02 出版日期:2015-07-25
作者简介:张克存(1978-),男,甘肃民勤人,理学博士,研究员,主要从事风沙工程与风沙灾害机理研究.Email:kecunzh@lzb.ac.cn
基金资助:
国家重点基础研究发展计划"青藏高原重大冻土工程的基础研究"(2012CB026105);国家自然科学基金项目国家自然科学基金(41371027)共同资助

Compilation of aeolian geomorphic map in the typical sand-damaged section along Qinghai-Tibet Railway

ZHANG Ke-cun, ZHANG Hao, QU Jian-jun, WANG Jun-zhan, AN Zhi-shan

Dunhuang Gobi and Desert Ecology and Environment Research Station/Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China

Received:2014-11-15 Revised:2015-03-02 Online:2015-07-25

摘要/Abstract

摘要： 随着青藏铁路全线开通,风沙危害已成为影响铁路安全运营的主要环境问题之一。铁路沿线风沙危害路段主要集中在措那湖、沱沱河、北麓河等地。基于高分辨率卫星遥感影像QuickBird数据,通过野外实地勘察,同时参考Google Earth影像和DEM数据,绘制了3个典型沙害路段的风沙地貌专题图,地貌图比例尺为1:50000,采用二级分类系统,一级类为6个,共包含18个二级类。由于青藏铁路地处西风带中部急流区,风力强劲;铁路沿线生态环境脆弱、地表类型复杂,冻融和风蚀时空交错,地表沙物质丰富,风沙活动强烈而频繁,铁路沙害正呈现出迅速增长的态势。鉴于此,很有必要绘制青藏铁路沿线风沙灾害现状及防治措施布局的专题地图,为科学合理地制定青藏铁路沿线风沙危害综合防护体系提供依据。

关键词: 青藏铁路, 风沙地貌, 专题地图, 地图编制技术

Abstract: With the whole Qinghai-Tibet railway line opening to traffic, aeolian hazards have been one of the main environmental problems threatening its safe operation. Aeolian hazards along this railway line mainly distribute at the sections of the Cuona Lake, Tuotuo River and Beilu River. Based on the data of QuickBird high-resolution satellite images and field observation and meanwhile consulting data of Google Earth images and DEM, this paper drew a thematic map of aeolian geomorphology of three typical sections with aeolian hazards along this railway line. This map was in a scale of 1:50000 and employed a two-level classification system, including 6 first-grade and 18 second-grade categories. The Qinghai-Tibet railway is located in the central section of westerlies jet stream where wind power is very strong. Meanwhile, the fragile ecological environment, complex landscape and the temporal and spatial interaction between freeze thawing and wind erosion produce abundant sand supply here, and thus the movement of sand drift is strong and frequent, making the increasing of aeolian hazards along this railway line. Therefore, it is necessary to draw this thematic map containing the distribution of aeolian hazards and their control measures, providing the theoretical reference for the construction of the integrative blown sand control system along this railway line. Aeolian-deposition landform and sand-controlling methods are key elements manifested in the thematic map. This thematic map will be used for evaluating the degree of sand damage, predicting the trend of sand activities and establishing an integrative sand-controlling system along the Qinghai-Tibet railway. The goal of the thematic maps is to reflect the characteristics of sand damage along the Qinghai-Tibet railway, and to provide rich information for studying Aeolian landforms.

Key words: Qinghai-Tibet railway, aeolian geomorphology, thematic map, mapping technology

中图分类号:

张克存, 张号, 屈建军, 王军战, 安志山. 青藏铁路格拉段典型沙害路段风沙地貌专题图编制[J]. 干旱区地理, 2015, 38(4): 713-718.

ZHANG Ke-cun, ZHANG Hao, QU Jian-jun, WANG Jun-zhan, AN Zhi-shan. Compilation of aeolian geomorphic map in the typical sand-damaged section along Qinghai-Tibet Railway[J]. , 2015, 38(4): 713-718.

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