四川雅安地区土地覆盖数据(土地覆盖、保护区、格网人口)

(1)土地覆盖数据包含雅安市及周边成都市、德阳市、眉山市等土地覆盖数据。土地覆盖数据集包括森林、草地、农田、聚落、湿地与水体、荒漠等6个一级类型和25个二级类型。
(2)全国1公里网格人口数据:将全国按照统一的标准划分为1km×1km的像元，每个像元赋予一个标识和一个属性值，其中标识值表示该像元的空间位置，属性值为该网格(1平方公里)的总人口数(人)。

(1) The land cover dataset covers Ya'an City and its surrounding areas including Chengdu City, Deyang City, Meishan City, etc. This dataset comprises 6 first-level categories (including forest, grassland, cropland, settlement, wetland and water body, desert, etc.) and 25 corresponding second-level subcategories.
(2) National 1km grid population dataset: The entire country is divided into 1km×1km grid cells under a unified standard. Each grid cell is assigned an identifier and an attribute value, where the identifier value represents the spatial location of the cell, and the attribute value is the total population (unit: person) of this 1-square-kilometer grid.