呼伦湖水面长时间序列变化数据集（1975-2018年）

该数据集基于1973-2018年全国非冰期5-10月Landsat-8 OLI卫星遥感影像产生。利用OLI的近红外波段(B5)和绿光波段（B3）计算归一化水体指数；之后结合OSTU阈值分割方法获取水体边界，最后通过人工检查，修正边界，形成湖泊边界。
该数据集包含38个shp矢量文件。

This dataset is derived from Landsat-8 OLI satellite remote sensing images acquired across China during the non-freezing period (May to October) between 1973 and 2018. The Normalized Difference Water Index (NDWI) was calculated using the near-infrared band (B5) and green band (B3) of OLI. Then, the Otsu's threshold segmentation method was used to extract water boundaries, which were subsequently corrected via manual inspection to generate the final lake boundaries. This dataset contains 38 shapefile (.shp) vector files.

搜集汇总

背景与挑战

背景概述

该数据集基于1973-2018年Landsat-8 OLI卫星遥感影像，通过归一化水体指数和OSTU阈值分割方法，生成了呼伦湖1975-2018年期间的年最大水面边界矢量数据（共38个shp文件），用于监测湖泊面积和界线的长时间序列动态变化，属于自然地理学领域。