2000～2012年青藏高原湖泊水面时空过程数据集遥感提取  

Extraction of the spatial-temporal lake water surface dataset in the Tibetan Plateau over the past 10 years

作　　者：卢善龙[1] 肖高怀 贾立[1] 张微[3,4] 罗海静 

机构地区：[1]中国科学院遥感与数字地球研究所,中国科学院数字地球重点实验室,遥感科学国家重点实验室,北京100101 [2]东北农业大学资源与环境学院,哈尔滨150030 [3]中国国土资源航空物探遥感中心,北京100083 [4]北斗航天卫星应用科技集团,北京100070 [5]湖南科技大学土木工程学院,湘潭411201

出　　处：《国土资源遥感》2016年第3期181-187,共7页Remote Sensing for Land & Resources

基　　金：国家自然科学基金应急管理项目“近30年青藏高原湖泊水面变化及其区域气候效应”(编号:41440010);国家自然科学基金青年基金项目“基于多源异构数据的湖泊水储量遥感估算方法研究”(编号:41101401)共同资助

摘　　要：以MODIS MOD09Q1为数据源,构建了一种结合湖泊水面缓冲区边界分析和逐个湖泊确定分割阈值的湖泊水面信息提取方法,并利用该方法提取了2000—2012年间青藏高原每期间隔8 d的面积大于1km2湖泊水面数据集。精度分析结果表明,该文方法提取结果相对于研究中基于30 m空间分辨率Landsat TM得到的133个抽样湖泊水面面积结果,总精度为93.98%;与近年来其他研究人员在纳木错、青海湖和色林错等典型湖泊得到的遥感监测结果对比,无论在日、月及年尺度上,均具有非常高的一致性;而与第二次全国湖泊调查结果相比,整个高原区面积大于1 km2的湖泊数量仅相差11个、面积误差仅为4.74%。该论文为大范围、长时间序列单一地物(水面、植被、城镇等)分布面积提取提供了方法参考,也为开展青藏高原近10a多来湖泊变化研究提供了可靠的基础数据。A lake water surface extraction method is proposed in this paper, which is combined with lake water surface boundary buffer analyzing and lake by lake segmentation threshold determining, with MOD09Q1 as the data source. The method was successfully used to extract the 8 - day lake water surface dataset of the Tibetan Plateau, during the period of 2000 -2012. The accuracy analysis results indicated that, compared with water surface data of the 133 sampling lakes that extracted from the 30 m Landsat TM images, the total precision of the proposed method is 93.98% ; the extracted daily, monthly, and annual lake water surface areas of the Nam Co, the Qinghai Lake, and the Siling Co are well consistent with the remote sensing monitoring results generated by other researchers; and the differences of the lake quantities and acreage statistical results between the second national lake survey and this study are only 11 and 4.74%, respectively. This study provides a reference method for large scale and long time series single objects （such as water, vegetation, and urban） distribution area extraction. Furthermore, it provides reliable dataset for the lake change research of the Tibetan Plateau in the past 10 years.

关 键 词：湖泊水面 时空过程 MOD09Q1 遥感 青藏高原 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]