本数据集基于Landsat遥感影像，通过辐射定标和大气校正等预处理算法得到沙漠区域影像，通过人工目视解译及波段指数的方法提提取沙漠边界区域。数据集涉及的沙漠主要包括中国八大沙漠。分别为腾格里沙漠，塔克拉马干沙漠，巴丹吉林沙漠，库布奇沙漠，乌兰布和沙漠，库木塔格沙漠，古尔班通古特沙漠，柴达木沙漠。时间跨度为2000-2020每5年一次数据。", "ds_source": "
1. Landsat陆地卫星影像数据：从美国地质调查局网站(https://www.usgs.gov/) 和地理空间数据云(http://www.gscloud.cn/) 下载。", "ds_process_way": "
1. 遥感数据预处理: 辐射定标、大气校正、影像拼接、裁剪、颜色校正。\n
2. 人工注释方法提取沙漠边界: 使用基于labelme标注软件工具对裁剪好的图像人工标注沙漠边界，成为模型的训练集。
3.数据增强: 对训练集进行镜像翻转和方向的旋转得到10倍的数据集。", "ds_quality": "
所标注沙漠边界的平均精度在1像素(30 m)以内。", "ds_acq_start_time": "2000-01-01 00:00:00", "ds_acq_end_time": "2020-12-31 00:00:00", "ds_acq_place": "塔克拉玛干沙漠,古尔班通古特沙漠,巴丹吉林沙漠,腾格里沙漠,库木塔格沙漠,柴达木盆地沙漠,库布齐沙漠,乌兰布和沙漠", "ds_acq_lon_east": 111.24, "ds_acq_lat_south": 35.5, "ds_acq_lon_west": 76.14, "ds_acq_lat_north": 47.0, "ds_acq_alt_low": 1200.0, "ds_acq_alt_high": 1635.0, "ds_share_type": "login-access", "ds_total_size": 36793763, "ds_files_count": 39, "ds_format": "", "ds_space_res": "30m", "ds_time_res": "5年", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "0bdbf9e1-1c9f-4ab7-9ded-1b7da896df31.jpg", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "9de89acc-5714-4927-aba3-ac88067dff8a", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2024-06-12 11:27:43", "last_updated": "2025-11-22 12:02:00", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB6509.2024", "i18n": { "en": { "title": "China Desert 2000-2020 Boundary Dataset", "ds_format": "", "ds_source": "", "ds_quality": "", "ds_ref_way": "", "ds_abstract": "", "ds_time_res": "5年", "ds_acq_place": "Taklimakan Desert, Gurbantunggut Desert, Badain Jaran Desert, Tengger Desert, Kumtag Desert, Qaidam Basin Desert, Kubuqi Desert, Ulan Buhe Desert", "ds_space_res": "30m", "ds_projection": "", "ds_process_way": "", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "沙漠边界", "中国沙漠" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "腾格里沙漠", "塔克拉玛干沙漠", "巴丹吉林沙漠", "库布齐沙漠", "乌兰布和沙漠", "库木塔格沙漠", "古尔班通古特沙漠", "柴达木沙漠" ], "ds_time_tags": [ 2000, 2005, 2010, 2015, 2020 ], "ds_contributors": [ { "true_name": "吕永科", "email": "220220942031@lzu.edu.cn", "work_for": "兰州大学信息科学与工程学院", "country": "中国" }, { "true_name": "王兆滨", "email": "wangzhb@lzu.edu.cn", "work_for": "兰州大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "柳新朝", "email": "220220943471@lzu.edu.cn", "work_for": "兰州大学信息科学与工程学院", "country": "中国" }, { "true_name": "吕永科", "email": "220220942031@lzu.edu.cn", "work_for": "兰州大学信息科学与工程学院", "country": "中国" } ], "ds_managers": [ { "true_name": "王兆滨", "email": "wangzhb@lzu.edu.cn", "work_for": "兰州大学", "country": "中国" } ], "category": "沙漠与荒漠化" }