该数据为对黑河流域中上游自明代时期到民国时期的主要古灌渠分布复原，以《重刊甘镇志》、《重修肃州新志》和《甘州府志》为基础资料并结合20世纪60年代地形图和影像获得。
\n\n以ArcGIS软件Shapefile格式提供，采用GCS Krasovsky 1940坐标系，Transverse Mercator投影格网。数据类型为线状矢量，其属性包括名称、来源、长度、灌溉面积等。
", "ds_source": "《重刊甘镇志》、《重修肃州新志》和《甘州府志》及民国各县县志、20世纪 60年代地形图和遥感影像
", "ds_process_way": "数字矢量化
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2013-01-01 00:00:00", "ds_acq_end_time": "2013-12-31 00:00:00", "ds_acq_place": "黑河流域", "ds_acq_lon_east": 102.0, "ds_acq_lat_south": 37.766666666666666, "ds_acq_lon_west": 98.0, "ds_acq_lat_north": 42.7, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 649520, "ds_files_count": 2, "ds_format": "矢量", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "Transverse Mercator 投影", "ds_thumbnail": "2831cfbb-a3bc-4744-a498-e61a51c76c9a.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "建议参考文献：\r\n石亮. 明清及民国时期黑河流域中游地区绿洲化荒漠化时空过程研究[D]. 兰州: 兰州大学硕士学位论文, 2010.", "ds_from_station": null, "organization_id": "9c4867b1-5cb1-4de0-abeb-df42547bf41e", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.40" ], "quality_level": 3, "publish_time": "2020-12-18 10:48:41", "last_updated": "2023-06-13 10:03:18", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.Westdc.2020.804", "i18n": { "en": { "title": "A dataset on the distribution of ancient channels in the middle and upper reaches of the Black River Basin from the Ming to the Republican Dynasties", "ds_format": "shp", "ds_source": "\"Re-publication of ganzhen records\", \"revision of new records of Suzhou\" and \"Ganzhou Prefecture records\" and county records of the Republic of China, topographic maps and remote sensing images of the 1960s
", "ds_quality": "The data quality is good
", "ds_ref_way": "", "ds_abstract": "This data is a restoration of the distribution of the main ancient irrigation channels in the middle and upper reaches of the Heihe river basin from the Ming dynasty period to the Republican period, based on the Re-publication of ganzhen records, revision of new records of Suzhou and Ganzhou Prefecture records and combined with topographical maps and images from the 1960s.
\nIt is provided in ArcGIS software Shapefile format, using the GCS Krasovsky 1940 coordinate system with a Transverse Mercator projection grid. The data type is a line vector with attributes such as name, source, length and irrigated area.
", "ds_time_res": "", "ds_acq_place": "Heihe River Basin", "ds_space_res": "", "ds_projection": "Transverse Mercator ", "ds_process_way": "Digital vectorisation
", "ds_ref_instruction": "Recommended references:\r\nShi Liang. Temporal and spatial processes of oasis desertification in the middle reaches of Heihe River Basin during the Ming and Qing Dynasties and the Republic of China [D]. Lanzhou: Master's thesis of Lanzhou University, 2010" } }, "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, "ds_topic_tags": [ "灌溉面积", "古灌渠" ], "ds_subject_tags": [ "地图学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "黑河" ], "ds_time_tags": [ 1368, 1644, 1949 ], "ds_contributors": [ { "true_name": "颉耀文", "email": "xieyw@lzu.edu.cn", "work_for": "兰州大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "颉耀文", "email": "xieyw@lzu.edu.cn", "work_for": "兰州大学", "country": "中国" } ], "ds_managers": [ { "true_name": "黑河计划数据管理中心", "email": "westdc@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "" }, { "true_name": "颉耀文", "email": "xieyw@lzu.edu.cn", "work_for": "兰州大学", "country": "中国" } ], "category": "基础地理" }