采用波段阈值法和人工修正相结合，基于Landsat历史卫星影像汇编了丝绸之路沿线重点区域洪扎河流域1990~2020年间4个时期（1990s, 2000s, 2010s, 2020s）的冰湖编目。数据质量得到了高分辨率图像多次解译结果的验证、缓冲区误差估计方法评价和多个已有编目的对比评估。冰湖编目包括冰湖面积、高程、时间等属性。数据以shp格式存储，为冰湖研究和相关应用提供重要的基础数据。", "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。\n\n
2. SRTM：空间分辨率为1″的SRTM DEM数据，下载地址:http://imagico.de/map/demsearch.php。", "ds_process_way": "
数据的加工采用波段阈值法和人工修订相结合的半自动的方法，包括冰湖边界的初步提取、人工修正、属性赋值等环节。", "ds_quality": "
冰湖边界划分的平均精度在±0.5像素(±15 m)以内，\n多时期冰湖编目的精度为±5%-20%。", "ds_acq_start_time": "1990-01-01 00:00:00", "ds_acq_end_time": "2020-12-31 00:00:00", "ds_acq_place": "丝绸之路沿线重点区域洪扎河流域", "ds_acq_lon_east": 75.75, "ds_acq_lat_south": 35.75, "ds_acq_lon_west": 75.5, "ds_acq_lat_north": 37.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 151678, "ds_files_count": 25, "ds_format": "", "ds_space_res": "30m", "ds_time_res": "10年", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "b68067fa-4cfe-40a9-995f-af3dba0d2813.png", "ds_thumb_from": 0, "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": "2024-05-20 16:51:24", "last_updated": "2025-04-28 11:29:50", "protected": true, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB6499.2024", "i18n": { "en": { "title": "Glacial lake inventory of Hunza basin along the Silk Road", "ds_format": "", "ds_source": "", "ds_quality": "", "ds_ref_way": "", "ds_abstract": "", "ds_time_res": "10年", "ds_acq_place": "The Hongzha River Basin, a key area along the Silk Road", "ds_space_res": "30m", "ds_projection": "", "ds_process_way": "", "ds_ref_instruction": "" } }, "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": [ "冰湖编目", "丝绸之路沿线重点区域" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "洪扎河流域" ], "ds_time_tags": [ 1990, 2020 ], "ds_contributors": [ { "true_name": "吴坤鹏", "email": "wukunpeng2008@lzb.ac.cn", "work_for": "云南大学国际河流与生态安全研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "吴坤鹏", "email": "wukunpeng2008@lzb.ac.cn", "work_for": "云南大学国际河流与生态安全研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "吴坤鹏", "email": "wukunpeng2008@lzb.ac.cn", "work_for": "云南大学国际河流与生态安全研究院", "country": "中国" } ], "category": "其他" }