Understanding the relationship between the water crisis and sustainability of the Angkor World Heritage site
Understanding the relationship between the water crisis and sustainability of the Angkor World Heritage site
复制标题
了解水危机与吴哥世界遗产地可持续发展之间的关系
DOI：
10.1016/j.rse.2019.111293
复制
发表时间：
2019-10-01
影响因子：
13.5
通讯作者：
Tang, Panpan
中科院分区：
文献类型：
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作者：
Chen, Fulong;Guo, Huadong;Tang, Panpan
由于周边地区，包括繁荣的暹粒城市，吴哥世界遗产(柬埔寨)的社会经济发展迅速，其可持续性日益受到关注。我们解释了2007-2017年期间卫星雷达干涉测量(InSAR)运动场的结果，以获得对地面沉降、地下水开采和古迹稳定性之间关系的动力学的新见解。运动趋势和水力压头的演变表明，考古区的地表在2011年之前是稳定的，随后在2011-2017年间出现了轻微下沉，主要是受到不受管制的旅游开发的影响。暹粒市地下地下水位的空间下降在未来可能会威胁到古迹的稳定性。我们开发了一个模型，预测如果游客的年增长率和由此产生的对地下水资源的需求持续下去，到2021年，考古区中心地带的地面沉降可能会达到-3.6毫米/年到-3.8毫米/年。每年低于250万的旅游承载能力可能是可持续的，以防止出现水文问题，这些问题可能会加剧显著地面下沉的风险，并对古迹的稳定性造成后果。这项研究清楚地说明了干涉合成孔径雷达天眼与地面测量相结合在监测潜在危害和模拟世界遗产保护状态方面的价值，以改进对减轻未来威胁至关重要的准备工作。
The sustainability of Angkor World Heritage site (Cambodia) has been of increasing concern due to rapid socioeconomic development of the surrounding region including the booming city of Siem Reap. We interpret findings from satellite radar interferometry (InSAR) motion fields for the period 2007-2017 to derive new insights into the dynamics of the relationship between land subsidence, groundwater extraction and monument stability. Evolution of motion trends along with hydraulic heads indicated that the surface in the archaeological zone was stable up to 2011, followed by a mild subsidence during 2011-2017, primarily impacted by unregulated tourism development. Spatially decline of groundwater table beneath Siem Reap City could, in the future, threaten the stability of monuments. We developed a model that predicted that surface subsidence in the central archaeological zone could reach up to -3.6 to -3.8 mm/yr by 2021 if a 6% annual increase of tourists and the resulting demand for groundwater resources continued. A tourism carrying capacity below 2.5 million per year may be sustainable to prevent the emergence of hydrological problems that could exacerbate the risk of significant land subsidence and consequences for monument stability. This study is a clear illustration of the value of InSAR space-eye combined with ground-based measurements for monitoring potential hazards and modelling conservation states of World Heritage sites in order to improve preparedness critical for mitigating future threats.