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1987–2017年青海湖水体边界数据集
A dataset of the Qinghai Lake periphery during 1987 – 2017
: 2020 - 08 - 25
: 2020 - 08 - 25
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摘要&关键词
摘要:本研究基于地理空间数据分析云平台Google Earth Engine(GEE),使用Landsat 影像进行像元级融合,重构目标年份最小云量影像集,基于水体指数方法,经过人工修正和精度验证,获得了1987–2017年11期青海湖水体边界数据集。数据集时间序列较长且包含湖泊面积等属性信息,可作为湖泊时空变化、湖泊水量变化评估的基础数据,也可作为水资源变化、湖泊与气候变化相应等研究的重要依据。
关键词:青海湖;水体边界;面积变化
Abstract & Keywords
Abstract: An image composite method was applied and Landsat historical images were employed to generate seasonal images with lowest cloud composite at the pixel level which implemented with Google Earth Engine (GEE) platform. Based on a water index method and correctness procedure, we obtained 11 series of Qinghai Lake body boundary during 1987–2017 in this research through modification and validation by making use of generated seasonal images data. The dataset has a long time series and geometric properties of the lake, which can be used as the basic data for assessing the temporal-spatial changes of the lake and the changes in water volume of the lake. In addition, it can also be used as an important basis for the changes of water resources, climate change and the relationship of the lake in this region.
Keywords: Qinghai Lake; lake body periphery; area changes
稿件与作者信息
郝美玉
Hao Meiyu
hmy@cnic.cn
罗泽
Luo Ze
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