青藏高原“一江两河”地区耕地分布数据集（2020）

青藏高原“一江两河”地区是指雅鲁藏布江中游及其支流拉萨河和年楚河的河谷地区，地处西藏自治区中南部，包括18个县（区）。基于2020年Google Earth 2 m分辨率的遥感影像，通过目视解译研发了青藏高原“一江两河”地区耕地分布数据集，并运用地统计学分析方法揭示了其空间分布格局。本数据集包括“一江两河”地区的以下数据：（1）研究区范围数据；（2）耕地空间分布矢量数据；（3）耕地空间分布栅格数据；（4）耕地验证点。数据结果表明，2020年该地区耕地面积为2,356.15 km²，数据精度95.2%。“一江两河”地区耕地主要沿河流分布，在空间上呈现东多西少、南多北少的分布特征；耕地在区域上主要集中分布在西南密度聚集区和东部密度聚集区。数据集存储为.shp和.tif格式，一共由30个数据文件组成，数据量为568 MB（压缩为1个文件15.5 MB）。

The "Yijiang Lianghe (One River and Two Tributaries)" region on the Qinghai-Tibet Plateau refers to the valley areas of the middle reaches of the Yarlung Zangbo River and its two tributaries, the Lhasa River and the Nianchu River. Located in the central and southern parts of the Tibet Autonomous Region, it covers 18 counties (districts). Based on 2 m-resolution remote sensing images from Google Earth in 2020, the cultivated land distribution dataset of the "Yijiang Lianghe" region on the Qinghai-Tibet Plateau was developed via visual interpretation, and its spatial distribution pattern was revealed using geostatistical analysis methods. This dataset includes the following data for the region: (1) study area extent data; (2) spatial distribution vector data of cultivated land; (3) spatial distribution raster data of cultivated land; (4) cultivated land validation points. The data results show that the cultivated land area of this region in 2020 was 2,356.15 km², with a data accuracy of 95.2%. Cultivated land in the "Yijiang Lianghe" region is mainly distributed along rivers, exhibiting a spatial distribution pattern of more in the east than in the west and more in the south than in the north; it is primarily concentrated in the southwestern density aggregation zone and the eastern density aggregation zone across the region. The dataset is stored in .shp and .tif formats, consisting of 30 data files in total, with an uncompressed total data volume of 568 MB (compressed to a single file of 15.5 MB).

搜集汇总

背景与挑战

背景概述

该数据集是2020年青藏高原“一江两河”地区（雅鲁藏布江中游及拉萨河、年楚河流域）的耕地分布数据，基于Google Earth 2米分辨率遥感影像通过目视解译生成，包含矢量与栅格格式，耕地面积2356.15平方公里，精度95.2%，呈现沿河流分布且东多西少、南多北少的空间格局，适用于地理信息系统分析。