澜沧江-湄公河流域降雨径流空间与典型湖库水域面积分布数据集

澜沧江-湄公河贯穿大湄公河次区域，中国境内段称为澜沧江，境外段称为湄公河，是中国-东盟区域最重要的国际河流，其水资源利用和生态环境保护问题受到国际社会的高度关注。目前对该流域水资源随时间波动与变化趋势还缺乏足够的认知，开展流域地表径流和主要湖库水域变化监测及分析，对于推导澜沧江-湄公河流域和周边国家的生态环境保护具有重要意义。本数据集采用的遥感数据以中国卫星数据为主，所用传感器包括30m空间分辨率的中国环境一号卫星A星和B星CCD（HJ-1A/CCD1、HJ-1A/CCD2、HJ-1B/CCD1、HJ-1B/CCD2）等，得到2013年6月~2014年5月时段内空间分辨率为30m的径流产品，并对该区域内的典型湖库洞里萨湖（Tonle Sap Lake）、南俄河水库（Nam Ngum Reservoir）、乌汶拉水库（Ubol Ratana Reservior）和诗琳通水库（Sirindhorn Reservior）的水域面积及蓄水量变化进行了分析。本数据集压缩后的数据量为 7.56MB，共享方式为完全开放共享。

The Lancang-Mekong River runs through the Greater Mekong Subregion (GMS). The section within China is referred to as the Lancang River, while the section outside China is named the Mekong River. As the most important international river in the China-ASEAN region, its water resources utilization and eco-environmental protection have garnered significant attention from the international community. Currently, there remains a lack of sufficient understanding of the temporal fluctuations and changing trends of water resources in this basin. Conducting monitoring and analysis of surface runoff and water area changes in major lakes and reservoirs of the basin is of great significance for advancing eco-environmental protection work in the Lancang-Mekong River Basin and its neighboring countries. The remote sensing data utilized in this dataset mainly originate from Chinese satellites, including the Charge-Coupled Device (CCD) instruments on the Chinese HJ-1A and HJ-1B satellites with a 30 m spatial resolution (specifically HJ-1A/CCD1, HJ-1A/CCD2, HJ-1B/CCD1, HJ-1B/CCD2) and other related sensors. We produced 30 m spatial resolution runoff products during the period from June 2013 to May 2014, and analyzed the changes in water area and storage capacity of typical lakes and reservoirs in this region, namely Tonle Sap Lake, Nam Ngum Reservoir, Ubol Ratana Reservoir and Sirindhorn Reservoir. The compressed size of this dataset is 7.56 MB, and it is shared through fully open access.

搜集汇总

背景与挑战

背景概述

该数据集提供了澜沧江-湄公河流域2013年6月至2014年5月期间的降雨径流空间分布和典型湖库水域面积变化信息，空间分辨率为30米，基于中国环境卫星数据生成。数据集主要用于监测和分析流域地表径流及主要湖库的水资源变化，支持澜沧江-湄公河流域及周边国家的生态环境保护和相关研究，数据质量可靠，共享方式开放。