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The Impacts of Desertification on Cultural Relics in DunHuang

机译:荒漠化对敦煌文物的影响

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摘要

In recent decades,because of physical and human factors,the desertification in Dunhuang city increased severely and posed a serious threat to the protection of cultural relics.Based on Landsat TM images,fieldworks,cultural relics map,digital terrain model and other data,RS and GIS technologies are used to investigate the status of desertification in Dunhuang with interactive interpretation method,after having established the classification system of desertification and interpretation keys.In the end,the desertification status map is produced and the impacts of desertification on cultural relics are analyzed.According to the investigation,it reveals that the area of desertification land in Dunhuang reaches 7.551×103km2,accounting for its total area in 28.49%,and distributes mainly on the south side of Shule River;The main levels are the mid and severe ones,whose sum area accounts for the total area in 65% upwards,imply the desertification in Dunhuang is very serious;Land desertification has caused serious damage and threat to the cultural relics.What can be concluded is that Mogao Grottoes,West Thousand Buddha Grottoes and Shouchang Ancient City are in the severe desertification area directly,Yangguan Pass and Yumen Pass in the mid,and Xuanquanzhi site,Hecang Ancient City,Majuanwan site,and most part of the Han Great Wall in the slight.
机译:近几十年来,由于人为因素,敦煌市荒漠化加剧,严重威胁着文物保护。基于Landsat TM影像,野外作业,文物图,数字地形模型等数据,RS建立了荒漠化分类系统和解释关键点后,运用GIS技术和GIS技术,通过交互式解释方法调查敦煌市荒漠化状况。最后,制作了荒漠化状况图,分析了荒漠化对文物的影响。经调查发现,敦煌市荒漠化土地面积达7.551×103km2,占总面积的28.49%,主要分布在疏勒河南侧;主要水平为中,重度。 ,其总面积占总面积的65%以上,说明敦煌的荒漠化非常严重;土地荒漠化可以得出的结论是,莫高窟,西千佛窟和寿昌古城直接在严重荒漠化地区,中部是阳关关,玉门关,还有玄昌之址古城,马ju湾遗址,以及汉长城的大部分都在轻微的范围内。

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