本数据来自大野口流域关滩森林站超级样地，该超级样地乔木植被为青海云杉纯林，样地大小为100m×100m。该数据集为土壤冻结深度数据，是为了研究青海云杉林内的土壤冻结深度的日变化过程，该土壤冻结管位于大野口关滩森林站内，布设在自动气象站旁边的青海云杉林下面。\n
在2008-06-01至2008-12-31日期间，每天早晨8:00时，观测每天的冻结深度。记录内容包括每层的冻结上限和冻结下限，在该样地土壤冻结没有分层现象，所以只有一层的冻结上限。观测数据单位为厘米，记录到1位小数。
", "ds_source": "该土壤冻结管位于大野口关滩森林站内，布设在自动气象站旁边的青海云杉林下面。 在2008-06-01至2008-12-31日期间，每天早晨8:00时，观测每天的冻结深度。记录内容包括每层的冻结上限和冻结下限，在该样地土壤冻结没有分层现象，所以只有一层的冻结上限。观测数据单位为厘米，记录到1位小数。
", "ds_process_way": "自动气象站数据收集
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2008-06-13 00:00:00", "ds_acq_end_time": "2009-01-12 00:00:00", "ds_acq_place": "黑河流域,大野口流域加密观测区,森林水文试验区,大野口关滩森林站超级样地", "ds_acq_lon_east": 100.2875, "ds_acq_lat_south": 38.46666666666667, "ds_acq_lon_west": 100.30333333333333, "ds_acq_lat_north": 38.666666666666664, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 10380, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "日", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "7a7836ed-95c7-460f-9478-b8434242c982.png", "ds_thumb_from": 0, "ds_ref_way": "谭俊磊，黑河综合遥感联合试验：大野口关滩森林站超级样地土壤冻结深度观测数据集（2008年），国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2019，doi：10.12072/ncdc.NIEER.db1707.2022", "paper_ref_way": "", "ds_ref_instruction": "本数据由“黑河综合遥感联合试验”产生，用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。", "ds_from_station": null, "organization_id": "14df1d8b-6362-4c0f-b88e-b46d4abe5db9", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596 ", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.NIEER.db1707.2022", "subject_codes": null, "quality_level": 3, "publish_time": "2022-03-11 08:43:59", "last_updated": "2022-03-11 08:43:59", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.nieer.2020.1543", "i18n": { "en": { "title": "Heihe River comprehensive remote sensing joint experiment: observation data set of soil freezing depth in super sample plot of Dayekou guantan forest station (2008)", "ds_format": "", "ds_source": " <p> The soil freezing pipe is located in Dayekou guantan forest station and is arranged under the Qinghai Spruce Forest next to the automatic weather station. From June 1, 2008 to December 31, 2008, observe the daily freezing depth at 8:00 every morning. The recorded contents include the upper and lower freezing limits of each layer. There is no stratification phenomenon in soil freezing in this sample plot, so there is only the upper freezing limit of one layer. The unit of observation data is cm, and 1 decimal place is recorded</ p>\n <p>  Good data quality</p>\n\nThis data comes from the super sample plot of guantan forest station in Dayekou basin. The tree vegetation of the super sample plot is pure Qinghai Spruce Forest, and the sample plot size is 100m × 100m。 The data set is the data of soil freezing depth, which is to study the daily change process of soil freezing depth in Qinghai Spruce Forest. The soil freezing pipe is located in Dayekou guantan forest station and is arranged under Qinghai Spruce Forest next to the automatic weather station.\n
From June 1, 2008 to December 31, 2008, observe the daily freezing depth at 8:00 every morning. The recorded contents include the upper and lower freezing limits of each layer. There is no stratification phenomenon in soil freezing in this sample plot, so there is only the upper freezing limit of one layer. The unit of observation data is cm, and 1 decimal place is recorded
", "ds_time_res": "日", "ds_acq_place": "Heihe River Basin, Dayekou basin intensive observation area, forest hydrological test area, Dayekou guantan Forest Station Super sample plot", "ds_space_res": "", "ds_projection": "", "ds_process_way": " <p>  Automatic weather station data collection</p>\n