叶尼塞河流域海拔高度分类数据集

叶尼塞河流域海拔高度分类数据集是在叶尼塞河流域界线数据基础上，截取ASTER-DEM和Google Earth 数字高程数据，经过数据除噪、数据异常剔除和数据融合等数据处理过程，按照流域高程分类指标划分得到。该数据集包括叶尼塞河流域海拔高度10个划分类别。划分指标分别为50m，100m，200m，500m，1000m，1500m，2000m，2500m和3000m。叶尼塞河流域高程分类数据表明，叶尼塞河流域大部分地区处于山地和高原。北部为海拔低于200m的西西伯利亚平原和北西伯利亚低地。其中，低于海拔50m的低地面积165096.00km2，占流域面积的6.21%；50-100m的平原面积99342.68km2，占流域面积的3.74%；海拔100-200m的平原面积171111.65km2，占流域总面积的6.43%。中部和南部是中西伯利亚高原和萨彦岭等山地。其中，海拔高度在200-500m的地域面积最大，达975181.73km2，占流域总面积的36.66%；海拔高度500-1000m的地域面积570176.31km2，占流域总面积的12.27%。海拔高于1500m的山地占流域总面积的13.26%。数据采取.tif格式存储。压缩后数据量112MB。

The Yenisei River Basin Elevation Classification Dataset is developed based on the boundary data of the Yenisei River Basin, by extracting ASTER-DEM and Google Earth digital elevation data, followed by data processing procedures including denoising, outlier removal and data fusion, and finally divided according to the basin elevation classification indicators.

This dataset includes 10 elevation classification categories for the Yenisei River Basin, with the classification thresholds set at 50m, 100m, 200m, 500m, 1000m, 1500m, 2000m, 2500m and 3000m.

The elevation classification data of the Yenisei River Basin shows that most of the basin is covered by mountains and plateaus. The northern part consists of the West Siberian Plain and North Siberian Lowland with elevations below 200m. Specifically, the lowland area below 50m above sea level is 165096.00 km², accounting for 6.21% of the total basin area; the plain area between 50-100m is 99342.68 km², accounting for 3.74% of the total basin area; the plain area between 100-200m is 171111.65 km², accounting for 6.43% of the total basin area.

The central and southern parts are mountains such as the Central Siberian Plateau and the Sayan Mountains. Among them, the area with elevation between 200-500m is the largest, reaching 975181.73 km², accounting for 36.66% of the total basin area; the area with elevation between 500-1000m is 570176.31 km², accounting for 12.27% of the total basin area. The mountainous areas with elevation above 1500m account for 13.26% of the total basin area.

The dataset is stored in .tif format, with a compressed size of 112 MB.

搜集汇总

背景与挑战

背景概述

该数据集基于叶尼塞河流域边界，融合ASTER-DEM和Google Earth数字高程数据，经过去噪和异常处理后，按10个海拔分类指标（50m至3000m）进行划分，以30米分辨率呈现。数据显示流域大部分为山地和高原，北部平原海拔低于200米，其中200-500米区域面积最大，占总流域的36.66%。数据以.tif格式存储，压缩后为112MB，适用于地理和地貌研究。