Geospatial assessment of tourism impact on land environment of Dehradun, Uttarakhand, India
Geospatial assessment of tourism impact on land environment of Dehradun, Uttarakhand, India
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DOI：
10.1007/s10661-018-6535-4
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发表时间：
2018-04-01
影响因子：
3
通讯作者：
Kumar, Rakesh
中科院分区：
文献类型：
--
作者：
Dey, Jaydip;Sakhre, Saurabh;Kumar, Rakesh
印度旅游业已成为主导产业，在未来几十年有进一步增长的潜力。德拉敦是印度著名的旅游胜地之一，位于北阿坎德邦，吸引了来自全国各地和国外的游客。游客数量的激增为道路、建筑和酒店等新的基础设施项目铺平了道路，这反过来又影响了山区的地形。本研究采用遥感和GIS技术，对德拉敦旅游对土地环境的影响进行了评价。利用OBIA对1972年、2000年和2016年的卫星影像进行分析，得到土地利用和土地覆盖（LULC），利用ASTER-DEM（数字高程模型）确定研究区地形。LULC分类包括建筑、植被、森林、灌丛、农业、人工林和水体。该地区的坡度分为平缓、中等、强烈、极端、陡峭和非常陡峭。为评价高地形土地上建成区的扩张，将城市土地利用空间的建成区等级叠加在坡级上。叠加分析表明，由于旅游业的增加，建成区的土地利用已经从缓坡扩展到非常陡的斜坡。在极陡、极陡、极陡边坡上随意施工，容易发生滑坡等自然灾害。为此，还利用多标准评价（MCE）技术绘制了滑坡易感性图，以防止随意建设，并协助进一步规划德拉敦市。研究表明，合理的城市发展规划是必要的，该规划应遵循土地优化利用和旅游业可持续发展的原则。
India's tourism industry has emerged as a leading industry with a potential to grow further in the next few decades. Dehradun, one of the famous tourist places in India located in the state of Uttarakhand, attracts tourist from all over the country and abroad. The surge in tourist number paved the way for new infrastructure projects like roads, buildings, and hotels, which in turn affects the topography of the mountainous region. In this study, remote sensing and GIS techniques have been used to assess the impact of tourism on the land environment of Dehradun. Satellite images of the years 1972, 2000, and 2016 were analyzed using object-based image analysis (OBIA) to derive land use and land cover (LULC) and ASTER-DEM (Digital Elevation Model) was used to determine the topography of the study area. LULC classification includes built-up, vegetation, forest, scrub, agriculture, plantation, and water body. The slope of the region was categorized as gentle, moderate, strong, extreme, steep, and very steep. To assess the sprawl of built-up on high terrain land, built-up class of LULC was overlaid on slope classes. The overlay analysis reveals that due to increase in tourism, the land use in terms of the built-up area has been extended from gentle slope to very steep slope. The haphazard construction on the extreme, steep, and very steep slope is prone to landslide and other natural disasters. For this, landslide susceptibility maps have also been generated using multicriteria evaluation (MCE) techniques to prevent haphazard construction and to assist in further planning of Dehradun City. This study suggests that a proper developmental plan of the city is essential which follows the principles of optimumuse of land and sustainable tourism.