河西走廊1：10万绿洲数据（1990年）

本数据集根据绿洲本身的特点以及遥感数据的分辨率及可获取性，并参照已有土地利用/覆盖遥感监测分类系统，建立了一个绿洲分类系统。本分类系统是三级分类体系，按人类的干预程度进行一级分类，按生态系统类型进行二级分类，按土地的自然属性进行三级级分类，共有2个一级类型、6个二级分类和31个三级类型。

This dataset establishes an oasis classification system based on the inherent characteristics of oases, the resolution and availability of remote sensing data, and with reference to existing land use/cover remote sensing monitoring classification systems. This classification system adopts a three-level hierarchical framework: the first-level classification is based on the degree of human intervention, the second-level classification is based on ecosystem types, and the third-level classification is based on the natural attributes of land. It comprises 2 first-level categories, 6 second-level categories, and 31 third-level categories.

搜集汇总

背景与挑战

背景概述

该数据集为1990年河西走廊地区的1：10万比例尺绿洲数据，采用三级分类体系详细记录了绿洲的土地利用情况，数据质量高，类型准确率超过95%。数据来源于国家重点科研项目，适用于地理学和干旱区生态研究。