数据来源为地理空间数据云。本数据通过对多幅源数据DEM进行拼接，并用泾河流域边界裁剪，得到泾河流域数据DEM。再利用ArcGIS软件-水文分析工具确定河流网络，河流流向，汇流计算，水流长度，河流流量。
", "ds_source": "数据来源于地理空间数据云（http://www.gscloud.cn/search）。
", "ds_process_way": "（1）对下载DEM进行拼接，并使用泾河流域边界进行裁剪；\n
\n（2）利用ArcGIS软件的水文分析工具确定泾河流域河流网络、流向、流量、汇流累积量和水流长度等因子。
", "ds_quality": "数据质量良好。
", "ds_acq_start_time": "2000-01-01 00:00:00", "ds_acq_end_time": "2000-12-31 00:00:00", "ds_acq_place": "泾河流域,陕西省,甘肃省,宁夏回族自治区", "ds_acq_lon_east": 108.86583333333333, "ds_acq_lat_south": 34.63333333333333, "ds_acq_lon_west": 106.19166666666668, "ds_acq_lat_north": 37.39888888888889, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 152700549, "ds_files_count": 2, "ds_format": "栅格", "ds_space_res": "30米", "ds_time_res": "年", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "9411c928-2781-4e77-9d68-ad44f777a048.jpg", "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": "bf1ae243-c102-4b2d-a2f6-b698468f4401", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.JRiver.db1982.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2022-04-08 10:17:46", "last_updated": "2025-06-30 15:52:29", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.JRiver.db1982.2022", "i18n": { "en": { "title": "Hydrological factor data set of Jinghe River Basin (2000)", "ds_format": "Raster", "ds_source": "The data comes from geographic spatial data cloud（ http://www.gscloud.cn/search ）.
", "ds_quality": "The data quality is good.
", "ds_ref_way": "", "ds_abstract": "The data source is geographic spatial data cloud. This data is obtained by concatenating multiple source data DEMs and cropping them using the boundary of the Jinghe River Basin to obtain the Jinghe River Basin data DEM. Reuse ArcGIS software - hydrological analysis tool to determine river network, river flow direction, confluence calculation, water flow length, and river flow rate.
", "ds_time_res": "年", "ds_acq_place": "Jinghe River Basin, Shaanxi Province, Gansu Province, Ningxia Hui Autonomous Region", "ds_space_res": "30米", "ds_projection": "", "ds_process_way": "(1) Splice the downloaded DEM and crop it using the boundary of the Jinghe River Basin;\n
\n(2) Use the hydrological analysis tool of ArcGIS software to determine factors such as river network, flow direction, flow rate, cumulative flow concentration, and flow length in the Jinghe River Basin
", "ds_ref_instruction": "" } }, "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": [ "无洼地DEM", "汇流累积量", "水流长度", "流量" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "甘肃省", "宁夏回族自治区", "泾河流域", "陕西省" ], "ds_time_tags": [ 2000 ], "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" }