Assessing the utility of geospatial technologies to investigate environmental change within lake systems.
Assessing the utility of geospatial technologies to investigate environmental change within lake systems.
复制标题
DOI：
10.1016/j.scitotenv.2015.09.136
复制
发表时间：
2016-02
期刊：
影响因子：
--
通讯作者：
E. Politi;J. Rowan;M. Cutler
中科院分区：
文献类型：
--
作者：
E. Politi;J. Rowan;M. Cutler
世界上超过 50% 的人口居住在距离河流和湖泊 3 公里范围内，这凸显了淡水资源对人类健康和社会福祉的持续重要性。同时覆盖c。占地球非冰川陆地面积 3.5% 的世界静止水域（天然湖泊和水库）的环境质量趋势人们知之甚少，至少与河流相比，因此评估其现状和对变化的敏感性是全球优先事项。本文认为，利用现有全球数据集的地理空间方法以及新一代遥感产品，为描述湖泊特性（例如水质、物理结构、水文状况和生态行为）的变化轨迹提供了基础。这种方法还提供了证据基础，以了解气候强迫和/或改变流域过程的相对重要性，例如。土地覆盖和土壤湿度数据与气候数据相结合，为模拟区域水平衡和径流随时间的变化提供了基础。我们使用主要来自多瑙河盆地以及世界其他地区的例子，展示了该方法的力量及其在评估湖泊系统对环境变化的敏感性方面的实用性，从而在未来更好地管理这些关键资源。
Over 50% of the world's population live within 3 km of rivers and lakes highlighting the on-going importance of freshwater resources to human health and societal well-being. Whilst coveringc. 3.5% of the Earth's non-glaciated land mass, trends in the environmental quality of the world's standing waters (natural lakes and reservoirs) are poorly understood, at least in comparison with rivers, and so evaluation of their current condition and sensitivity to change are global priorities. Here it is argued that a geospatial approach harnessing existing global datasets, along with new generation remote sensing products, offers the basis to characterise trajectories of change in lake properties e.g., water quality, physical structure, hydrological regime and ecological behaviour. This approach furthermore provides the evidence base to understand the relative importance of climatic forcing and/or changing catchment processes, e.g. land cover and soil moisture data, which coupled with climate data provide the basis to model regional water balance and runoff estimates over time. Using examples derived primarily from the Danube Basin but also other parts of the World, we demonstrate the power of the approach and its utility to assess the sensitivity of lake systems to environmental change, and hence better manage these key resources in the future.