本数据集采用SRTM v41 1s 分幅数据，经过图像拼接、投影转化、裁剪等处理，生成祁连山地区30 m分辨率数字高程模型（DEM）。
", "ds_source": "祁连山地区30 m分辨率DEM数据来自NASA的SRTM v41 1s数据，该数据目前由USGS免费分发，可以从USGS FTP站点免费下载。
", "ds_process_way": "利用Python程序，将SRTM v41 1s 分幅数据，进行格式转换、拼接、裁剪等处理至祁连山地区，得到祁连山地区30 m分辨率DEM数据；
", "ds_quality": "SRTM DEM数据的垂直误差小于16 m。
", "ds_acq_start_time": "2000-01-01 00:00:00", "ds_acq_end_time": "2000-12-31 00:00:00", "ds_acq_place": "祁连山地区", "ds_acq_lon_east": 103.9, "ds_acq_lat_south": 35.830000000000005, "ds_acq_lon_west": 93.5, "ds_acq_lat_north": 39.980000000000004, "ds_acq_alt_low": 1040.0, "ds_acq_alt_high": 5993.0, "ds_share_type": "login-access", "ds_total_size": 483925967, "ds_files_count": 3, "ds_format": "栅格/GeoTIFF", "ds_space_res": "30 m", "ds_time_res": "1 年", "ds_coordinate": "WGS84", "ds_projection": "GCS_WGS_1984", "ds_thumbnail": "bdf17db2-3799-4ee0-abb4-f5720acf11f2.jpg", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "本数据由“中国科学院西北生态环境资源研究院甘肃省祁连山生态环境研究中心”制作，用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。", "ds_from_station": null, "organization_id": "8fa8eec3-a891-44cd-b60e-f6af19a16bba", "ds_serv_man": "张举涛", "ds_serv_phone": "0931-4967575", "ds_serv_mail": "jutzhang@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2020-11-30 15:44:55", "last_updated": "2025-06-30 16:26:12", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.qlsst.2020.17", "i18n": { "en": { "title": "30m resolution digital elevation model (DEM) data in the Qilian Mountains region", "ds_format": "Raster/GeoTIFF", "ds_source": "The 30m resolution DEM data for the Qilian Mountains region comes from NASA's SRTM v41 1s data, which is currently distributed for free by USGS and can be downloaded for free from the USGS FTP site.
", "ds_quality": "The vertical error of SRTM DEM data is less than 16 meters
", "ds_ref_way": "", "ds_abstract": "This dataset uses SRTM v41 1s segmented data, which is processed through image stitching, projection conversion, cropping, etc. to generate a 30m resolution digital elevation model (DEM) for the Qilian Mountains region.
", "ds_time_res": "1 年", "ds_acq_place": "Qilian Mountains region", "ds_space_res": "30 m", "ds_projection": "GCS_WGS_1984", "ds_process_way": "Using a Python program, the SRTM v41 1s segmented data is processed through format conversion, concatenation, and cropping to obtain 30m resolution DEM data for the Qilian Mountains region;
", "ds_ref_instruction": "\r\nThis data is produced by \"Gansu Qilian Mountain Ecological Environment Research Center of Northwest Institute of Ecological Environment and Resources, Chinese Academy of Sciences\". When using the data, users should clearly state the source of the data in the text, and quote the reference method provided by this metadata in the reference section." } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 0, "license_type": "https://creativecommons.org/licenses/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, "belong_to_nieer": false, "ds_topic_tags": [ "海拔", "DEM", "祁连山", "SRTM" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "祁连山地区" ], "ds_time_tags": [ 2000 ], "ds_contributors": [ { "true_name": "张举涛", "email": "jutzhang@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "张成琦", "email": "chengqizhang@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "冯起", "email": "qifeng@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "张举涛", "email": "jutzhang@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "张成琦", "email": "chengqizhang@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "基础地理" }