本数据以ASTERG DEM30M分辨率数字高程数据为数据源，进行影像处理后，生成空间分辨率为30M的DEM数据产品。该数据可为甘肃省科学研究提供基础数据支持。
", "ds_source": "甘肃省30m分辨率DEM数据来自地理空间数据云的ASTERG DEM30M分辨率数字高程数据，该数据目前免费分发，可以从地理空间数据云网站免费下载。
", "ds_process_way": "对原数据进行拼接、投影等影像处理，再利用甘肃省边界裁剪，生成空间分辨率为30M的DEM数据产品。
", "ds_quality": "数据质量良好。
", "ds_acq_start_time": "2009-01-01 00:00:00", "ds_acq_end_time": "2009-12-31 00:00:00", "ds_acq_place": "甘肃省", "ds_acq_lon_east": 108.7075, "ds_acq_lat_south": 32.596111111111114, "ds_acq_lon_west": 92.33777777777777, "ds_acq_lat_north": 42.79333333333333, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 502738261, "ds_files_count": 2, "ds_format": "tif", "ds_space_res": "30m", "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "b5704306-2d49-4795-8a0d-659b47ad4aee.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "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": "526ff655-4cd4-4650-bb86-6fd3481dfb65", "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": "2023-08-23 17:25:31", "last_updated": "2025-06-30 16:30:16", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.GSEER.DB3978.2023", "i18n": { "en": { "title": "30 meter resolution digital elevation model (DEM) data in Gansu Province", "ds_format": "tif", "ds_source": "The 30m resolution DEM data of Gansu Province comes from the ASTERG DEM30M resolution digital elevation data of the Geospatial Data Cloud, which is currently distributed for free and can be downloaded for free from the Geospatial Data Cloud website.
", "ds_quality": "The data quality is good.
", "ds_ref_way": "", "ds_abstract": "This data is based on ASTERG DEM30M resolution digital elevation data as the data source. After image processing, a DEM data product with a spatial resolution of 30M is generated. This data can provide basic data support for scientific research in Gansu Province.
", "ds_time_res": "", "ds_acq_place": "Gansu Province", "ds_space_res": "30m", "ds_projection": "", "ds_process_way": "Perform image processing such as stitching and projection on the original data, and then use the boundary cropping of Gansu Province to generate DEM data products with a spatial resolution of 30M.
", "ds_ref_instruction": "\r\nWhen using data, users should clearly declare the source of the data in the main text and cite the citation 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, "is_paper_in_submitting": false, "ds_topic_tags": [ "甘肃省", "DEM", "30M" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "甘肃省" ], "ds_time_tags": [ 2009 ], "ds_contributors": [ { "true_name": "张耀南", "email": "yaonan@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": "李红星", "email": "lihongxing@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": "敏玉芳", "email": "myf@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" }