数据为柴达木河流域10万沙漠分布图,本数据以2000年TM影像为数据源,进行解译、提取、修编,利用遥感与地理信息系统技术结合1:10万比例尺成图要求,对沙漠、沙地和砾质戈壁进行专题制图。数据属性表:area(面积)、perimeter(周长)、ashm_(序列码)、class(沙漠编码)、ashm_id(沙漠编码)其中沙漠编码如下:流动沙地 2341010、半流动沙地 2341020、半固定沙地 2341030、戈壁 2342000、盐碱地 2343000。
采集时间 | 2000/01/01 - |
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采集地点 | 柴达木河流域 |
数据量 | 41.9 MiB |
数据格式 | Shapefile |
数据空间分辨率(/米) | 1000.0m |
坐标系 | WGS84 |
投影 | +proj=longlat +datum=WGS84 +no_defs |
2000年TM影像为数据源
解译、提取、修编
数据集通过严格的人工审核控制质量
# | 标题 | 文件大小 |
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1 | 柴达木河流域沙漠沙地分布数据集-文档.rar | 721.6 KiB |
2 | 柴达木河流域沙漠沙地分布数据集.rar | 41.2 MiB |
# | 时间 | 姓名 | 用途 |
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1 | 2024/03/27 00:54 | 韩* |
论文题目:柴达木盆地及西北干旱区系统发育学研究
数据在研究中的作用:确定柴达木盆地中沙漠部分
论文类型:博士论文
导师姓名:陈世龙
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2 | 2024/01/22 22:40 | 马*福 |
用于博物馆自然地理、地学科普内容转化及科普内容编写,
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3 | 2024/01/09 18:57 | yi****Wu |
用于是董志宝教授的沙漠志书籍撰写,其中包括数据搜集整理及相关内容。
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4 | 2023/10/30 20:22 | 申*旺 |
课题组进行河流沙漠的数据覆盖分析算法研发,特申请数据作为支撑
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5 | 2023/10/30 19:04 | 翁*华 |
论文题目:Inverted channels and buried channels in the Qaidam Basin, NW China: Insight from remote sensing and numerical simulation
论文摘要:Fluvial channels are extensively identified on the Earth and other terrestrial planets. Two different types of fluvial channels are found in the Qaidam Basin, NW China. Different channels are indicators of different paleo-environments with the complex fluvial and climate history. The buried channel is formed by aeolian deposition process. The inverted channel is caused by differential wind erosion. In this paper, first we propose a workflow to detect the two channels using Sentinel-1 Synthetic Aperture Radar (SAR) datasets and multi-source datasets on Google Earth Engine, then we propose a numerical model to simulate the evolution of the inverted channel. Due to the different backscattering coefficient of the ground surface materials, we set a threshold of the backscattering coefficient as -18.5 dB to distinguish the two channel and surrounding features. Canny edge detection is used to delineate the inverted channels and buried channels. Based on the distribution and morphological characteristics of the two channels and previous studies on sediment chronology in the Qaidam Basin, we propose the evolution process of the channels and climate change since the Holocene. The inverted channel might form during the hyper-arid period of the early Holocene since 12.6±0.8 ka. The buried channel is formed during the period of the sand accumulation since 4-3 ka.
论文类型:期刊论文
导师姓名:陈宁华
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6 | 2023/10/26 22:57 | 曾*源 |
用于第二次青藏科考自然保护地环境调查分析。
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7 | 2023/09/04 03:53 | 申*旺 |
我司正进行地质方面的探测研究,申请数据用于对范围内的多种数据进行初期调研研究
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8 | 2023/08/08 01:57 | 陈*夫 |
水电总院作为参与方,参与的光伏治沙规划项目需使用。
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9 | 2023/07/18 04:39 | 吴*强 |
Paper title:
Paper abstract:
Paper type:
Tutor
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10 | 2023/05/21 03:16 | 王*萍 |
研究NETP全新世晚期风沙活动,了解研究区的自然地理现状
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