2017–2018年中国西部冰川编目数据集

The glaciers in Western China are highly sensitive to climate change and change greatly. Since the second glacier inventory in China, there has been a lack of systematic investigation on the glaciers in Western China. Based on the second glacier inventory data, this dataset has completed the extraction of glacier boundaries, quality checking of boundaries, uncertainty analysis of area and updating of glacier attributes in Western China during 2017–2018 through various data sources such as 315 Landsat remote sensing images and SRTM, combined with processing software of ArcGIS and Google Earth, and through manual visual interpretation. The results show that 53,238 glaciers existed in Western China in 2018, with a total area of 47,174.21 ± 19.93 km2, area error of ±0.04% of the total glacier area. In the southeastern Tibetan Plateau where the second glacier inventory in China is not yet completed, there are 13,066 glaciers with a total area of 7611.25±4.64 km2. This dataset provides data support for studies on glacier changes and the response of glaciers to climate change in Western China.

中国西部冰川对气候变化高度敏感且变化剧烈。自中国第二次冰川编目完成以来，针对中国西部冰川的系统性调查长期处于缺失状态。本数据集以中国第二次冰川编目数据为基础，整合315景陆地卫星（Landsat）遥感影像、SRTM等多源数据，借助ArcGIS与Google Earth处理软件，通过人工目视解译方法，完成了2017-2018年中国西部冰川的边界提取、边界质量核查、面积不确定性分析以及冰川属性更新工作。结果显示，2018年中国西部共有冰川53238条，总面积为47174.21±19.93 km²，面积误差为冰川总面积的±0.04%。针对尚未完成中国第二次冰川编目的青藏高原东南部区域，本次数据集共识别冰川13066条，总面积达7611.25±4.64 km²。本数据集可为中国西部冰川变化研究以及冰川对气候变化的响应研究提供数据支撑。

搜集汇总

背景与挑战

背景概述

该数据集是2017-2018年中国西部冰川编目数据集，基于第二次冰川编目数据，利用Landsat遥感图像和SRTM等数据源，通过ArcGIS和Google Earth软件结合人工视觉解释，完成了冰川边界提取、质量检查和属性更新。结果显示2018年中国西部共有53,238条冰川，总面积约47,174.21 km²，误差较小，为冰川变化和气候变化响应研究提供了重要数据支持。数据集具有高精度和系统性，覆盖范围包括青藏高原东南部等关键区域。