本数据集为1991-2000年南小河沟流域径流场观测数据,主要是对坡地水土流失规律和小流域水土流失规律进行定量的研究。观测要素有产生径流的次降雨量、次径流量、次泥沙量、土壤含水量、被覆度。次降雨量观测用该站点设的专用雨量站或借用临近雨量站的SM1型雨量器或自计雨量计进行雨量摘录；径流、泥沙采用径流桶（池）人工观测;土壤含水率采用人工取土烘干法观测;被覆度采用人工目测。
", "ds_source": "人工观测
", "ds_process_way": "（1）次径流量：1）径流池：产流结束后直接量水，根据水位—容积曲线推求径流总量。2）分流桶：用分水系数和分水量推求径流总量。总径流量（m³）=一级分流桶径流量（m³）+二级分流桶径流量（m³）×一级分流孔数+……+n级分流桶径流量（m³）×一级分流孔数×二级分流孔数×……×n级分流孔数\n（2）次泥沙量：1）径流池：降水结束、径流终止后立即观测。将集流槽中泥、水扫入径流池（桶）中搅拌均匀，取柱状水样2～3个（总量在1000～3000ml），以混合后的500ml水样作为标准样。含沙量采用置换法（比重瓶法）测定。2）分流桶：分别取样，计算如下：泥沙总量（kg）=一级分流桶径流量（m³）×含沙量（g/l）+二级分流桶径流量（m³）×含沙量（g/l）×一级分流孔数+……+n级分流桶径流量（m³）×含沙量（g/l）×一级分流孔数×二级分流孔数×……×n级分流孔数
\n\n", "ds_quality": "观测数据整编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": "1991-01-01 00:00:00", "ds_acq_end_time": "2000-12-31 00:00:00", "ds_acq_place": "甘肃省庆阳市西峰区后官寨乡南小河沟流域", "ds_acq_lon_east": 107.50833333333334, "ds_acq_lat_south": 35.68083333333333, "ds_acq_lon_west": 107.62388888888889, "ds_acq_lat_north": 35.74861111111111, "ds_acq_alt_low": 1043.0, "ds_acq_alt_high": 1050.0, "ds_share_type": "apply-access", "ds_total_size": 266752, "ds_files_count": 4, "ds_format": "Excel表格", "ds_space_res": null, "ds_time_res": "次", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "8009eb24-17ca-434f-912b-a214d274ddc8.png", "ds_thumb_from": 2, "ds_ref_way": "黄河水利委员会西峰水土保持科学试验站，1991-2000年黄土高塬沟壑区南小河沟流域径流场数据集，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2020，doi：10.12072/ncdc.HWXFZhan.db0026.2020", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "8f345532-a01e-49ca-a880-641bc176ede9", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2021-07-08 19:11:55", "last_updated": "2021-07-08 19:11:55", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.HWXFZhan.2020.81", "i18n": { "en": { "title": "Runoff data set of Nanxiaohegou watershed in Loess Plateau Gully Region from 1991 to 2000", "ds_format": "", "ds_source": "Manual observation
", "ds_quality": "In the process of compilation and input of observation data, there are four levels of manual verification, including tabulation, primary calibration, recheck and audit, so as to ensure the data quality.
", "ds_ref_way": "", "ds_abstract": "", "ds_time_res": "次", "ds_acq_place": "Nanxiaohegou watershed, houguanzhai Township, Xifeng District, Qingyang City, Gansu Province", "ds_space_res": "", "ds_projection": "", "ds_process_way": "", "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": [ "降水量", "径流", "被覆度", "土壤含水量", "泥沙" ], "ds_subject_tags": [ "水文测量" ], "ds_class_tags": [], "ds_locus_tags": [ "西峰", "南小河沟", "庆阳", "甘肃省" ], "ds_time_tags": [ 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000 ], "ds_contributors": [ { "true_name": "黄河水利委员会西峰水土保持科学试验站", "email": "18526328@qq.com", "work_for": "黄河水利委员会西峰水土保持科学试验站", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "袁静", "email": "317806317@qq.com", "work_for": "黄河水利委员会西峰水土保持科学试验站", "country": "中国" } ], "ds_managers": [ { "true_name": "袁静", "email": "317806317@qq.com", "work_for": "黄河水利委员会西峰水土保持科学试验站", "country": "中国" } ], "category": "水土保持" }