中国1：25万湖泊变化数据集（1980s-2020年）

该数据集为中国1:25万1980s至2020年的湖泊变化数据，数据在1980s湖泊数据、2020年湖泊数据的基础上，先对数据进行union操作，再对比相关数据，筛选出1980s为湖泊，2020年无湖泊的部分为湖泊减少部分数据，1980s无湖泊，2020年为湖泊的部分为新增湖泊部分数据。包含了湖泊代码、湖泊名称、所属省份、湖泊面积、一级流域、二级流域、所属湖区等指标。
数据内容包含了2个shp矢量文件，80-20减少.shp，80-20增加.shp。

This dataset contains lake change data across China at a scale of 1:250,000 from the 1980s to 2020. Based on the lake datasets from the 1980s and 2020, a union operation was first conducted, followed by comparative screening to separate the data into two categories: lake loss data, which refers to regions that were classified as lakes in the 1980s but had no lakes in 2020, and newly added lake data, which refers to regions that were not classified as lakes in the 1980s but became lakes in 2020. The dataset includes indicators such as lake code, lake name, affiliated administrative province, lake area, first-level river basin, second-level river basin, and affiliated lake region. The dataset contains two shapefile (SHP) vector files: 80-20 Loss.shp and 80-20 Increase.shp.

搜集汇总

背景与挑战

背景概述

该数据集是中国1:25万比例的湖泊变化数据，覆盖1980年代至2020年，通过对比两个时期的湖泊分布，识别出湖泊减少和新增的区域，并以shp矢量文件形式提供。数据包含湖泊代码、名称、面积、所属省份和流域等指标，适用于湖泊动态监测和环境变化研究，突出反映了近40年中国湖泊的空间变迁。