本数据集采用SRTM v41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90 m分辨率数字高程模型（DEM）。
", "ds_source": "祁连山地区90 m分辨率DEM数据来自NASA的SRTM v41 3s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 3s分幅数据进行格式转换、拼接、裁剪等处理至祁连山地区，分别得到90 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": 53743901, "ds_files_count": 3, "ds_format": "栅格/GeoTIFF", "ds_space_res": "90 m", "ds_time_res": "1 年", "ds_coordinate": "WGS84", "ds_projection": "GCS_WGS_1984", "ds_thumbnail": "02d77ea7-42f7-45d6-89a6-a95ac008f2f7.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": "张成琦", "ds_serv_phone": "0931-4967575", "ds_serv_mail": "chengqizhang@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2020-11-30 15:44:16", "last_updated": "2025-06-30 16:26:12", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.qlsst.2020.16", "i18n": { "en": { "title": "90 meter resolution digital elevation model (DEM) data in the Qilian Mountains region", "ds_format": "Raster/GeoTIFF", "ds_source": "The 90 meter resolution DEM data for the Qilian Mountains region comes from NASA's SRTM v41 3s data, which is currently distributed free of charge 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 segmented data, which is processed through image stitching, projection conversion, cropping, etc. to generate a 90 meter resolution digital elevation model (DEM) for the Qilian Mountains region.
", "ds_time_res": "1 年", "ds_acq_place": "Qilian Mountains region", "ds_space_res": "90 m", "ds_projection": "GCS_WGS_1984", "ds_process_way": "Using Python programs, format conversion, concatenation, cropping, and other processing of SRTM v41 3s segmented data were performed in the Qilian Mountains region to obtain 90 m resolution DEM data;
", "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, "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, "ds_topic_tags": [ "DEM", "SRTM", "海拔", "祁连山" ], "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" }