本数据集为1945-1957年黄土丘陵沟壑区第三副区大柳树沟梁家坪径流场基本观测数据。数据集包括径流场土壤含水率、降水及泥沙观测数据。大柳树沟梁家坪径流场是我国最早开始长系列观测的坡面径流场。主要对不同水土保持措施径流小区产生径流的次降水量、径流量、泥沙量进行观测，对比不同措施的减水减沙效益。径流场情况见径流场基本情况表。
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", "ds_process_way": "1.径流站水位观测方法为：读取测流断面测流建筑物的水尺数，非汛期每日8是观测一次，如有降雨，日水位变化缓慢时8时、20时观测两次；日水位变化较大或出现缓慢的峰谷时按2时、8时、14时、20时观测四次。汛期水位变化剧烈时按6分钟的倍数观测。\n2.试验场径流站的测流方式：采用巴塞尔量水槽测流，流量计算采用推流公式。\n3.泥沙取样及处理：测流断面泥沙采用中泓浮标法取样，取沙次数取决于洪水水位变化的次数，洪峰时为控制含沙量变化而增加取样次数。样品处理采用置换法。
", "ds_quality": "由专业技术人员进行人工观测；数据录入过程中经过四级人工校核，分别是制表、初校、复校、审核，以确保数据质量。
", "ds_acq_start_time": "1945-01-01 00:00:00", "ds_acq_end_time": "1957-01-01 00:00:00", "ds_acq_place": "甘肃省天水市南郊藉河南岸大柳树沟的梁家坪", "ds_acq_lon_east": 105.91666666666667, "ds_acq_lat_south": 34.96388888888889, "ds_acq_lon_west": 105.9, "ds_acq_lat_north": 34.99722222222222, "ds_acq_alt_low": 2.0, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 998404, "ds_files_count": 5, "ds_format": "Excel表格", "ds_space_res": null, "ds_time_res": "分、日、次", "ds_coordinate": "WGS84", "ds_projection": "GCS_WGS_1984", "ds_thumbnail": "ab71f124-1872-44a6-8d41-f9240e129156.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：18709464263", "ds_from_station": null, "organization_id": "49b5ee01-70c1-4c22-8937-1f94d7fcabe2", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [], "quality_level": 3, "publish_time": "2022-08-16 11:37:16", "last_updated": "2022-08-16 11:37:16", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.HWTSZhan.2020.42", "i18n": { "en": { "title": "Basic situation of farmland runoff field in liangjiaping, daliushugou, the third sub region of Loess Hilly and gully region, 1945-1957", "ds_format": "", "ds_source": "", "ds_quality": "", "ds_ref_way": "", "ds_abstract": "", "ds_time_res": "分、日、次", "ds_acq_place": "", "ds_space_res": "", "ds_projection": "", "ds_process_way": "", "ds_ref_instruction": " " } }, "submit_center_id": "ncdc", "data_level": 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": [ "径流系数", "径流深度", "侵蚀模数", "含沙量", "径流模数", "土壤流失量", "径流量", "流量", "水位", "输沙率" ], "ds_subject_tags": [], "ds_class_tags": [], "ds_locus_tags": [ "甘肃，天水，南郊" ], "ds_time_tags": [ 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957 ], "ds_contributors": [ { "true_name": "黄河水土保持天水治理监督局", "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" } ], "ds_managers": [ { "true_name": "黄河水土保持天水治理监督局", "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" }