本数据集为1955-1980年南小河沟流域土壤含水率观测数据，使用土钻人工取土后用烘干法处理土样。
", "ds_source": "人工定时观测
", "ds_process_way": "土壤含水率观测时间间隔一般是10天一次，即每月1日、11日、21日取样，在降水后必须加测雨后的土壤含水率。用土钻按代表深度0-10cm、10-20cm、20-40cm、40-60cm、60-80cm、80-100cm深分层取样，每层取样两个，用烘干法处理，重差法计算。平行观测土壤含水率，其平均值为该土层土壤含水率。
", "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": "1955-01-01 00:00:00", "ds_acq_end_time": "1980-12-31 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": 1050.0, "ds_acq_alt_high": 1423.0, "ds_share_type": "apply-access", "ds_total_size": 679936, "ds_files_count": 14, "ds_format": "excel表格", "ds_space_res": null, "ds_time_res": "分", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "3ef107f9-bad4-449c-9757-7dd5947816ff.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，1955-1980年黄土高塬沟壑区南小河沟流域土壤含水率观测数据集，国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn/)，2019，doi：10.12072/ncdc.HWXFZhan.db1969.2022", "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": "2022-04-07 17:10:42", "last_updated": "2025-02-02 15:45:02", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.HWXFZhan.2020.68", "i18n": { "en": { "title": "Soil water content observation data set of Nanxiaohegou watershed in the gully area of the Loess Plateau from 1955 to 1980", "ds_format": "", "ds_source": "Manual timing observation
", "ds_quality": "In the process of integration and input of observation data, four levels of manual verification are carried out, including tabulation, primary calibration, re calibration and audit, so as to ensure the data quality.
", "ds_ref_way": "", "ds_abstract": "This data set is the observation data of soil moisture content in Nanxiaohegou watershed from 1955 to 1980. The soil samples are processed by drying method after manual soil sampling with soil drill.
", "ds_time_res": "分", "ds_acq_place": "", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The time interval of soil water content observation is usually 10 days, i.e. sampling on the 1st, 11th and 21st of each month. After precipitation, the soil water content after rain must be measured. The representative depth of the soil drill is 0-10cm, 10-20cm, 20-40cm, 40-60cm, 60-80cm and 80-100cm. Two samples are taken for each layer, which are processed by drying method and calculated by weight difference method. The average value of soil moisture is the soil moisture content of the soil layer.
", "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": [ "土壤含水率", "南小河沟流域" ], "ds_subject_tags": [ "水文学" ], "ds_class_tags": [], "ds_locus_tags": [ "庆阳", "南小河沟", "西峰", "甘肃省" ], "ds_time_tags": [ 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980 ], "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" }