本数据集为2021-2024年吕二沟流域沟口径流站的径流泥沙观测数据。吕二沟观测断面为自然梯形断面；径流观测采用浮标法测流速，流速面积法计算流量；泥沙取样与测流同步进行，取样次数与测流次数相同，采用水边一点法取沙样，置换法测含沙量。\n
数据包括:实测流量成果表、洪水水文要素摘录表、逐次洪水降水量观测成果表、逐次洪水测验成果表、逐日平均流量表、逐日平均含沙量表、逐日平均悬移质输沙率表。", "ds_source": "
人工定时观测。", "ds_process_way": "
雨量计观测降水量；集流池人工观测产流量；人工取沙样、置换法计算含沙量进而推算产沙量；植被覆盖度采用目估法观测，郁闭度采用测针法观测。", "ds_quality": "
按照“水土保持试验规范”（SD239）和“水土保持试验规程”（SL419）的规定由专业技术人员进行数据的观测、整理、整编。\n
观测资料按照“四随”要求，随测、随算、随整理、随分析，发现观测的差错和不合理记录，及时进行处理、改正，并备注说明。\n
观测数据整编录入过程中经过制表、初校、复校、审核等四级人工校核，资料整编严格依据相关观测、整编规范规程，按照一校、二校、审核、复审、复核的过程开展，以确保数据成果质量。", "ds_acq_start_time": "2021-01-01 00:00:00", "ds_acq_end_time": "2024-12-31 00:00:00", "ds_acq_place": "甘肃省天水市秦州区吕二沟流域", "ds_acq_lon_east": 105.7388888888889, "ds_acq_lat_south": 34.51111111111111, "ds_acq_lon_west": 105.70555555555556, "ds_acq_lat_north": 34.57222222222222, "ds_acq_alt_low": 1176.0, "ds_acq_alt_high": 1707.0, "ds_share_type": "apply-access", "ds_total_size": 223373, "ds_files_count": 5, "ds_format": "Excel表格", "ds_space_res": null, "ds_time_res": "分、日、次", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "e20cb530-74fd-41f6-aee3-8ccce17cb891.png", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "如需申请使用，请联系数据贡献者“黄河水土保持天水治理监督局（天水水土保持科学试验站）” 邮箱：hwtsywk@163.com 电话：15502452002", "ds_from_station": null, "organization_id": "49b5ee01-70c1-4c22-8937-1f94d7fcabe2", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.55" ], "quality_level": 3, "publish_time": "2023-01-17 14:52:27", "last_updated": "2025-10-10 15:07:58", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.hwtszhan.db2703.2023", "i18n": { "en": { "title": "2021-2024 Runoff and Sediment Observation Data Set for Gully Flow Stations in the Lvergou Basin of the Third Sub district of the Loess Hilly and Gully Region", "ds_format": "", "ds_source": "
<p>Manual timing observation.\n <p>According to the provisions of \"Specification for Water and Soil Conservation Test\" (SD239) and \"Specification for Water and Soil Conservation Test\" (SL419), professional technical personnel shall observe, sort out and compile the data.\nObservation data shall be measured, calculated, sorted and analyzed according to the requirements of \"four follow-up\", and errors and unreasonable records of observation shall be timely handled and corrected, and notes shall be made.\n
During the compilation and entry of observation data, it is manually checked at four levels, including tabulation, initial calibration, recheck and review. The data compilation is carried out in strict accordance with the relevant observation and compilation specifications and procedures, and in accordance with the process of first calibration, second calibration, review, recheck and review to ensure the quality of data results.", "ds_ref_way": "", "ds_abstract": "
This dataset is the runoff and sediment observation data of the Gully Caliber Flow Station in the Lv'ergou Basin from 2021 to 2024. The observation section of Lv'ergou is a natural trapezoidal section; The flow observation adopts the buoy method to measure the flow velocity, and the flow velocity area method to calculate the flow rate; Sediment sampling and flow measurement are carried out simultaneously, with the same number of sampling and flow measurement times. Sand samples are taken using the water edge one point method, and sediment concentration is measured using the displacement method.\n
The data includes: measured flow results table, excerpt table of flood hydrological elements, observation results table of successive flood precipitation, test results table of successive floods, daily average flow rate table, daily average sediment concentration table, and daily average suspended sediment transport rate table.
", "ds_time_res": "分、日、次", "ds_acq_place": "Lu Ergou watershed, Qinzhou District, Tianshui City, Gansu Province", "ds_space_res": "", "ds_projection": "", "ds_process_way": "\nRainfall observed by rain gauge; Artificial observation of flow yield in the catchment basin; Artificial sand sampling and replacement method are used to calculate sediment concentration and then calculate sediment yield; The vegetation coverage is measured by the visual estimation method, and the canopy closure is measured by the needle method.", "ds_ref_instruction": "If you need to apply for use, please contact the data contributor \"Tianshui Water and Soil Conservation Administration of the Yellow River (Tianshui Water and Soil Conservation Scientific Experimental Station)\" email: hwtsywk@163.com Tel: 15502452002" } }, "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": [ "年输沙量", "年径流量", "洪水总量", "洪水输沙量", "单位面积土壤流失量", "径流系数", "逐日平均流量", "逐日平均含沙量", "逐日平均悬移质输沙率", "最大流量" ], "ds_subject_tags": [ "水文学" ], "ds_class_tags": [], "ds_locus_tags": [ "天水", "吕二沟", "甘肃省" ], "ds_time_tags": [ 2021, 2022, 2023, 2024 ], "ds_contributors": [ { "true_name": "张晓煜", "email": "hwtsywk@163.com", "work_for": "黄河水土保持天水治理监督局（天水水土保持科学试验站）", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "刘晓", "email": "", "work_for": "黄河水土保持天水治理监督局（天水水土保持科学试验站）", "country": "中国" }, { "true_name": "樊义佳", "email": "hwtsfyj@163.com", "work_for": "黄河水土保持天水治理监督局（天水水土保持科学试验站）", "country": "中国" } ], "ds_managers": [ { "true_name": "张晓煜", "email": "hwtsywk@163.com", "work_for": "黄河水土保持天水治理监督局（天水水土保持科学试验站）", "country": "中国" } ], "category": "水土保持" }