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敦煌铁路所经地区地处荒漠内陆,以沙漠戈壁地貌为主,生态环境恶劣、脆弱,对人类扰动极其敏感。敦煌铁路的建设必将在一定程度上加剧沿线地区的土地荒漠化现象。本文利用遥感与地理信息系统技术,结合野外调查分析结果,编制了柳沟至敦煌段铁路两侧10km范围土壤侵蚀现状图。根据铁路沿线荒漠化现状和工程建设活动对土地荒漠化的影响分析,对施工期土壤侵蚀类型与强度的变化以及工程造成的水土流失总量进行了预测,并据此分析了工程可能造成的土地荒漠化危害,并就此提出了相应的防治措施。
The area along the Dunhuang Railway is located in the hinterland of the desert, dominated by desert Gobi landform, its environment is harsh and fragile, and it is extremely sensitive to human disturbance. The construction of Dunhuang Railway will inevitably exacerbate the land desertification along the line to a certain extent. In this paper, using the technology of remote sensing and geographic information system combined with field investigation and analysis results, the current situation of soil erosion in the 10km range from Liugou to Dunhuang railway was compiled. Based on the analysis of the desertification status along the railway line and the impact of construction activities on the desertification of land, the type and intensity of soil erosion in construction period and the total amount of soil and water loss caused by the project are predicted. Based on this, the possible damage to land desertification due to the project , And put forward corresponding prevention and control measures accordingly.