中学地理教学以及中学地理试题命制需要用到这些数据。

绘图需要，以及用于研究1960年以来中国北方地区旱转涝情况

Paper title：Morphology and mineral composition of dust particles generated by saltation-induced sandblasting from typical Chinese dust source regions Paper abstract：Large quantities of dust particles are emitted from China’s arid and semi-arid regions, and their morphology and composition exert significant impacts on climate and environmental assessments from regional to global scales. To accurately characterize these effects, information at the single-particle level is essential, yet systematic records of dust particles in source regions remain scarce. Here, we present the Dust Morphology and Composition from China’s Source Regions (DMC-China)** dataset, comprising 54 samples from typical China’s dust source regions and covering diverse surface soil types, including gobi soil, sand dune, river sediment, desertified grassland, and saline land. We analyzed the morphology and composition of 529,062 single particles generated from surface soils with the Portable In Situ Wind Erosion Laboratory (PI-SWERL) and characterized them using computer-controlled scanning electron microscopy (CCSEM-EDX). This dataset underwent rigorous quality control, including unit harmonization, error checking, and outlier detection, and is provided in accessible XLSX format. This dataset provides source-region profiles of nascent dust particles relevant to long-distance transport, serving as a resource for dust emission modeling, aerosol–climate interactions, and environmental and health assessments. Paper type：data paper Tutor Junji Cao

本人为在读博士生，申请数据与用于博士毕业论文研究

参加mapgis全国技能大赛，需要采用官方数据

用于参加supermap竞赛，保证数据仅用于参赛使用

您好，我们研究西北干旱区需要用到疏勒河沙漠和塔里木的tif

用于在参加的易智瑞大赛中揭示塔克拉玛干沙漠边界变化

需要在示意图中绘制塔克拉玛干沙漠范围，谢谢

论文题目： 数据在研究中的作用：绘制矢量图 论文类型： 导师姓名：