念青唐古拉山西段冰湖数据(1970s-2018)

利用长时间序列Landsat遥感数据(1976年的KH-9数据为辅助数据)，人工目视解译获取了念青唐古拉山西段近40年(1970s-2018)共5期冰湖数据，对大于0.0036平方千米的冰湖从类型、规模、海拔、流域4个方面的变化特征进行了详细分析。研究发现，念青唐古拉山西段冰湖持续扩张，数量从1976年的192个增加到2018年的299个，增加了107个(+56%)，相应地总面积由原来的6.75±0.13平方千米扩张到9.12±0.13平方千米，增加了2.37平方千米 (+35%)；冰湖的类型正发生明显的变化；较小规模的冰湖变化较快；冰湖的扩张正向更高海拔发展。

Using long-time series Landsat remote sensing data (with 1976 KH-9 data as auxiliary data), five temporal glacial lake datasets of the Western Nyainqentanglha Mountains over a nearly 40-year period (1970s–2018) were obtained via manual visual interpretation. A detailed analysis was conducted on the changing characteristics of glacial lakes with an area larger than 0.0036 km² from four aspects: type, size, elevation and drainage basin. The study found that glacial lakes in the Western Nyainqentanglha Mountains continued to expand: the number of glacial lakes increased from 192 in 1976 to 299 in 2018, with a net growth of 107 (+56%); correspondingly, the total area expanded from 6.75±0.13 km² to 9.12±0.13 km², an increase of 2.37 km² (+35%). Distinct changes have occurred in the types of glacial lakes; smaller-scale glacial lakes have undergone faster changes; and the expansion of glacial lakes is shifting towards higher elevations.

搜集汇总

背景与挑战

背景概述

该数据集通过长时间序列Landsat遥感数据和KH-9数据，人工目视解译获取了念青唐古拉山西段1970s-2018年共5期冰湖数据，分析了冰湖在类型、规模、海拔、流域等方面的变化特征。研究发现，冰湖数量从1976年的192个增加到2018年的299个，总面积由6.75±0.13平方千米扩张到9.12±0.13平方千米，表明冰湖持续扩张且向更高海拔发展。数据格式为shp文件，适用于ArcGIS软件，投影坐标系为Albers Conical Equal Area。