Lake water surface mapping in the Tibetan Plateau using the MODIS MOD09Q1 product
Lake water surface mapping in the Tibetan Plateau using the MODIS MOD09Q1 product
复制标题
使用 MODIS MOD09Q1 产品绘制青藏高原湖泊水面测绘
DOI：
10.1080/2150704x.2016.1260178
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发表时间：
2017
影响因子：
2.3
通讯作者：
Zhang Guifang
中科院分区：
文献类型：
--
作者：
Lu Shanlong;Jia Li;Zhang Lei;Wei Yongping;Baig Muhammad Hasan Ali;Zhai Zhaokun;Meng Jihua;Li Xiaosong;Zhang Guifang
摘要青藏高原是世界上内陆湖泊最多、海拔最高的地区。绘制湖泊水在空间和时间上的分布图对于科学研究区域冰冻圈、水圈和大气之间的相互作用至关重要。针对中分辨率成像光谱仪(MODIS)MOD09Q1湖面反射率图像，提出了一种湖面测绘算法，并利用该算法生成了青藏高原2000-2012年的8天湖面数据集(湖面面积大于1 km2)。精度分析表明，与30 m陆地卫星TM影像提取的134个样本湖泊的水面数据相比，平均总体精度为91.81%，平均委托误差为3.26%，漏判误差为5.38%；与全球MODIS水幕数据具有较强的线性相关性(决定系数R2为0.9991)，总体精度为86.30%；第二次全国湖泊普查与本研究的湖泊面积差异仅为4.74%。该研究为近十年来青藏高原湖泊变化研究提供了可靠的数据集。
ABSTRACT The Tibetan Plateau (TP) has the largest number of inland lakes with the highest elevation on the planet. Mapping the distribution of lake water in space and time is crucial for scientific research of interactions among the regional cryosphere, hydrosphere, and atmosphere. In this study, a lake water surface mapping algorithm is developed for Moderate Resolution Imaging Spectroradiometer (MODIS) MOD09Q1 surface reflectance images, which is used to produce the 8-day lake water surface data set (lake water surface area larger than 1 km2) of theTP (Qinghai–Tibet Plateau) for the period of 2000–2012. The accuracy analysis indicate that compared with water surface data of the 134 sample lakes extracted from the 30 m Landsat Thematic Mapper (TM) images, the average overall accuracy of the results is 91.81% with average commission and omission error of 3.26% and 5.38%; the results also show strong linear (the coefficient of determination R2 is 0.9991) correlation with the global MODIS water mask data set with overall accuracy of 86.30%; and the lake area difference between the Second National Lake Survey and this study is only 4.74%, respectively. This study provides reliable data set for the lake change research of theTP in the recent decade.