本数据集为2011-2020年黄土丘陵沟壑区第一副区桥沟流域不同地貌类型径流场土壤含水率观测数据。桥沟流域位于陕西省榆林市绥德县，流域面积0.45平方公里，流域形状为叶面状，长宽为1.4KM和0.32KM,相对高差132m,沟壑密度5.4km²，属于裴家峁沟（无定河一级支流）的一级支流。本数据集对桥沟8个不同地貌类型径流小区土壤含水量进行观测，每天采集土壤样品，降水日对样品进行测定，没有降水则不作测定。径流场基本情况见《桥沟不同地貌类型径流场2011-2020年情况说明。主要监测指标有：\"场号\"、测次、取样日期、\"测点土壤含水率（％）取样深度0-10cm）\"、\"两测次间降水量 （mm）\"月日。", "ds_source": "
人工观测
", "ds_process_way": "在具有代表性的固定地点，去除表层杂草后，在30cm深度取样，用烘干（称重）法测定。
", "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": "2011-01-01 00:00:00", "ds_acq_end_time": "2020-12-31 00:00:00", "ds_acq_place": "陕西省榆林市绥德县桥沟流域", "ds_acq_lon_east": 110.29555555555555, "ds_acq_lat_south": 37.49277777777778, "ds_acq_lon_west": 110.29138888888889, "ds_acq_lat_north": 37.50361111111111, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 98242, "ds_files_count": 5, "ds_format": "xls，doc，pdf", "ds_space_res": null, "ds_time_res": "分、日、次", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "f633180e-c616-4cef-bcf1-610e75a4b73b.jpg", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "f447b2e7-0b54-4601-8d49-0164f2a3fd9a", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "myf@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.5530" ], "quality_level": 3, "publish_time": "2021-04-27 09:36:09", "last_updated": "2022-12-02 18:50:40", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.HWSDZhan.db2506.2022", "i18n": { "en": { "title": "Observation data set of soil moisture content of runoff field in Qiaogou watershed of the first sub region of Loess Hilly and gully region from 2011 to 2020", "ds_format": "", "ds_source": "
<pre><code> <p>Artificial timing observation</p>\n <pre><code> <p>In order to ensure the data quality, four levels of manual verification are carried out in the process of integrating and entering observation data, which are tabulation, preliminary calibration, re calibration and audit. <P>\n <pre><code>\nThis data set is the observation data of soil moisture content in runoff field of different landform types in Qiaogou watershed, the first sub region of Loess Hilly and gully region from 2011 to 2020. Qiaogou watershed is located in Suide County, Yulin City, Shaanxi Province, with an area of 0.45 square kilometers. The shape of the watershed is foliar, with a length and width of 1.4km and 0.32km, a relative height difference of 132M, and a gully density of 5.4km2. It belongs to the first tributary of peijiamaogou (the first tributary of Wuding River). In this data set, the soil water content of eight runoff plots with different geomorphic types in Qiaogou was observed. Soil samples were collected every day, and the samples were measured on the day of precipitation, but not on the day of no precipitation. The basic situation of runoff field is shown in the description of runoff field of different landform types in Qiaogou from 2011 to 2020. The main monitoring indicators include: field number, measurement times, sampling date, \"soil moisture content (%) sampling depth 0-10cm\" and \"precipitation between two measurements (mm)\".
", "ds_time_res": "分、日、次", "ds_acq_place": "Qiaogou watershed, Suide County, Yulin City, Shaanxi Province", "ds_space_res": "", "ds_projection": "", "ds_process_way": " <pre><code> <p>Precipitation observation instruments include SM1 ordinary rain gauge with a diameter of 20cm and dsj2 siphon type self recording rain gauge. The SM1 type adopts the 8-hour and 20-hour two-stage system for annual observation. It mainly observes the start and end time of precipitation and makes statistics of precipitation. When the intermittent time of precipitation is more than 15 minutes, it is observed as two times of precipitation before and after the interval. When the intermittent time is less than 15 minutes, it is recorded as one-time precipitation observation. If one-time precipitation crosses 8 hours and 20 hours, it should be measured at 8 hours and 20 hours. Dsj2 type adopts 24 section system for flood season observation. In case of failure of self recording rain gauge, the observation data of ordinary rain gauge is used for supplement. </p>\n