本数据集基于2024年三峡水库预泄情景开展下游河道水质指标的变化过程模拟，包括观测工况及11种预泄工况下伍家岗、云池、宜都、枝城和荆州五个断面的TN、TP、DTP、PO4、DTSi五个指标。数据对分析三峡-葛洲坝梯级水库汛期运行水位动态控制对下游河道水质的影响、大型梯级水库群汛期水位动态控制的生态评估提供基础。
\n数据集共12个excel文件，分别为观测工况（Case-obz.xlsx）及11种预泄工况（Case12.xlsx ~ Case22.xlsx）下伍家岗、云池、宜都、枝城和荆州五个断面的TN（总氮）、TP（总磷）、DTP（溶解态总磷）、PO4（磷酸盐 / 正磷酸盐）、DTSi（溶解态总硅）五个指标过程。\n
表头：伍家岗（WJG）11.6km，云池（YunC）34km，宜都（YiDu）36.5km，枝城（ZC）56.5km，荆州（JZ）140km。\n
TN、TP、DTP、PO4、DTSi的单位：mg/L。", "ds_source": "
来自中国水利水电科学研究院
", "ds_process_way": "MIKE11模型预测研究范围自宜昌至城陵矶江段，上边界以宜昌水文站流量（葛洲坝水电站出流）为上边界条件，下边界以水位为边界条件，其间考虑松滋口、藕池口及城陵矶汇流。采用有限插分格式离散方程，模型的率定参数是综合糙率。河道糙率值的选定是在收集现有数据资料基础上，经模型多次调试计算选定的，糙率值在0.035-0.065之间。
", "ds_quality": "数据比较准确，达到精度要求。
", "ds_acq_start_time": "2024-06-21 00:00:00", "ds_acq_end_time": "2024-07-31 00:00:00", "ds_acq_place": "长江中游,宜昌,三峡", "ds_acq_lon_east": 111.0, "ds_acq_lat_south": 29.26, "ds_acq_lon_west": 106.83, "ds_acq_lat_north": 31.42, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 1409947, "ds_files_count": 0, "ds_format": "*.xlsx", "ds_space_res": "100m", "ds_time_res": "日", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "c80d9fd7-471f-4ee6-8b37-2dde3521c476.png", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": "", "organization_id": "44547705-9513-4685-a641-661bdf406520", "ds_serv_man": "", "ds_serv_phone": "", "ds_serv_mail": "", "doi_value": "", "subject_codes": [ "170.55" ], "quality_level": 0, "publish_time": "2026-07-14 17:34:31", "last_updated": "2026-07-14 17:34:31", "protected": false, "protected_to": "2027-01-01 00:00:00", "lang": "zh", "cstr": "", "i18n": { "en": { "title": "Simulation dataset of ecological impacts of flood control scenarios of the Three Gorges Reservoir（2024）", "ds_format": "*.xlsx", "ds_source": "From China Academy of Water Conservancy and Hydropower Sciences
", "ds_quality": "The data is relatively accurate and meets the accuracy requirements.
", "ds_ref_way": "", "ds_abstract": "This dataset carries out simulation of the change process of water quality indicators in the downstream river based on the Three Gorges Reservoir pre-discharge scenario in 2024, including five indicators of TN, TP, DTP, PO4, and DTSi at five sections of Wujiagang, Yunchi, Yidu, Zhicheng and Jingzhou under observation conditions and 11 pre-discharge conditions. The data provides a basis for analyzing the impact of dynamic control of the operating water level of the Three Gorges and Gezhouba cascade reservoirs in flood season on the water quality of downstream rivers, and the ecological assessment of dynamic control of the water level of large cascade reservoirs in flood season.
\r\nThere are a total of 12 excel files in the data set, which are five indicator processes: TN (total nitrogen), TP (total phosphorus), DTP (dissolved total phosphorus), PO4 (phosphate/orthophosphate), and DTSi (dissolved total silicon) under the observation conditions (Case-obz.xlsx) and 11 pre-discharge conditions (Case12.xlsx~Case22.xlsx).\r\n
Header: Wujiagang (WJG) 11.6 km, Yunchi (YunC) 34km, YiDu (36.5 km), Zhicheng (ZC) 56.5 km, Jingzhou (JZ) 140km.\r\n
Units of TN, TP, DTP, PO4, DTSi: mg/L.", "ds_time_res": "", "ds_acq_place": "Middle reaches of Yangtze River, Yichang, Three Gorges", "ds_space_res": "", "ds_projection": "", "ds_process_way": "
The prediction and research scope of the MIKE11 model ranges from Yichang to Chenglingji River. The upper boundary is based on the discharge from Yichang Hydrological Station (outflow from Gezhouba Hydropower Station), and the lower boundary is based on the water level. During this period, Songzikou, Ouchikou and Chenglingji confluence are considered. The equations are discretized using a finite interpolation scheme, and the calibration parameter of the model is the comprehensive roughness. The selection of river roughness values is based on the collection of existing data and through multiple model debugging calculations. The roughness values are between 0.035 and 0.065.
", "ds_ref_instruction": "None" } }, "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": [ "预泄，TN", "TP" ], "ds_subject_tags": [ "水文学" ], "ds_class_tags": [], "ds_locus_tags": [ "长江中游", "宜昌", "三峡" ], "ds_time_tags": [ 2024 ], "ds_contributors": [ { "true_name": "黄钰铃", "email": "hylcos90@163.com", "work_for": "中国水利水电科学研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "黄钰铃", "email": "hylcos90@163.com", "work_for": "中国水利水电科学研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "黄钰铃", "email": "hylcos90@163.com", "work_for": "中国水利水电科学研究院", "country": "中国" } ], "category": "水文" }