本数据集包括塔克拉玛干沙漠不同地表沉积物（冲洪积扇、河流沉积、河漫滩、芦苇湿地、草地、胡杨林、灌丛沙丘、流动沙丘和人工草方格）样品的经纬度、磁化率。样品在英国产Bartington MS2型磁化率仪上测量低频（0.47k Hz）磁化率。共计300个样品，300条记录。
", "ds_source": "在野外通过对塔克拉玛干沙漠不同区域的地貌单元采集相应的样品。在实验室对样品进行前处理，并运用专业仪器挑选统计，以此来获得最终数据。本数据集适用于沙漠土壤性质以及环境状况的研究和调查。
", "ds_process_way": "\"在野外按照一定空间距离（约30-50 km）在沙漠不同区域地貌单元（洪积扇、河流沉积、河漫滩、芦苇湿地、草地、胡杨林、灌丛沙丘、流动沙丘和人工草方格）地表采集100 g左右粉末样品、编号、记录经纬度和样品所处地貌位置。\n表土样品在测试之前首先将样品在45℃烘箱中放置12小时以上去除样品中的水分。烘干后的样品经研磨分散。称取5 g分散后的样品，用保鲜膜包装，并放置于222的塑料盒子中（盒子无磁性），编号。装好后的样品使用英国生产的Bartington磁化率仪测定样品的低频（0.47Hz）磁化率。测量中首先记录样品的测前背景值，等测完后再记录样品的测后背景值，每个样品的背景值取测前背景值和测后背景值的平均值。样品的实际磁化率值由实测值减去背景值得到。\n\"
", "ds_quality": "本数据集所有样品采自塔克拉玛干沙漠表层。样品磁化率使用英国生产的Bartington 磁化率仪测定，测试频率为0.47 Hz，依据GB/T 35690-2017弱磁材料磁导率测量方法。实验分析在中国科学院新疆生态与地理研究所中心实验室完成。
", "ds_acq_start_time": null, "ds_acq_end_time": null, "ds_acq_place": "塔克拉玛干沙漠", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 696671, "ds_files_count": 2, "ds_format": "电子表格", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "3db99d19-3f48-4cbd-9541-41eb046c9e6a.jpg", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "a5877b42-96ea-4f13-af7e-246f355413d6", "doi_value": "", "subject_codes": [ "170.50" ], "quality_level": 1, "publish_time": "2024-09-25 12:34:05", "first_publish_time": "2024-09-25 12:34:05", "last_updated": "2025-03-07 13:00:53", "protected": false, "protected_to": null, "lang": "zh", "cstr": "33110.11.XIEG.XJSEDATA.2022.00009168", "license": null, "extra": null, "files_shape": [ { "name": "实体数据", "size": null, "is_dir": true }, { "name": "附件", "size": null, "is_dir": true } ], "features": null, "data_level": 0, "i18n": { "en": { "title": "Magnetic susceptibility dataset of topsoil samples in the Taklimakan Desert (2023)", "ds_abstract": "This dataset includes the latitude, longitude, and magnetic susceptibility of samples of different surface sediments (alluvial and alluvial fans, river deposits, floodplains, reed wetlands, grassland, Populus euphratica forest, shrub sand dunes, mobile sand dunes and artificial grass grids) in the Taklimakan Desert. The low-frequency (0.47kHz) magnetic susceptibility of the samples was measured on a Bartington MS2 magnetic susceptibility meter made in the UK. A total of 300 samples and 300 records.
", "ds_source": "In the field, corresponding samples were collected from geomorphological units in different areas of the Taklimakan Desert. Samples are pre-processed in the laboratory and professional instruments are used to select and statistics to obtain the final data. This dataset is suitable for the study and investigation of desert soil properties and environmental conditions.
", "ds_process_way": "\"In the field, a powder sample of about 100 g was collected on the surface of different desert geomorphological units (alluvial fans, river deposits, floodplains, reed wetlands, grassland, Populus euphratica forest, shrub sand dunes, mobile sand dunes and artificial grass grids) at a certain spatial distance (about 30-50 km), and the latitude and longitude and the geomorphological location of the sample were recorded.\nBefore testing, topsoil samples were first placed in an oven at 45℃ for more than 12 hours to remove moisture from the samples. The dried samples were ground and dispersed. Weigh 5 g of the dispersed sample, wrap it in plastic wrap, place it in a 222 plastic box (the box is non-magnetic), and number it.The loaded samples were used to measure the low-frequency (0.47Hz) magnetic susceptibility of the samples using a Bartington magnetic susceptibility meter made in the UK. During the measurement, the pre-measurement background value of the sample is first recorded, and then the post-measurement background value of the sample is recorded after the measurement is completed. The background value of each sample is taken as the average value of the pre-measurement background value and the post-measurement background value. The actual magnetic susceptibility value of the sample is obtained by subtracting the background value from the measured value.\n\"
", "ds_quality": "All samples in this dataset were taken from the surface of the Taklimakan Desert. The magnetic susceptibility of the sample was measured using a Bartington magnetic susceptibility meter produced in the United Kingdom, with a test frequency of 0.47 Hz, and was based on GB/T 35690-2017 Method for Measuring Permeability of Weakly Magnetic Materials. The experimental analysis was completed at the Central Laboratory of the Xinjiang Institute of Ecology and Geography, China Academy of Sciences.
", "ds_acq_place": "taklimakan desert", "ds_format": "spreadsheet" } }, "license_type": null, "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": [ "磁化率", "沉积物" ], "ds_subject_tags": [ "地质学" ], "ds_class_tags": [], "ds_locus_tags": [ "塔克拉玛干沙漠" ], "ds_time_tags": [ 2023 ], "ds_contributors": [ "高鑫", "周杰", "赵永成" ], "ds_meta_authors": [ "周杰" ], "ds_managers": [ "周杰" ], "category": "沙漠与荒漠化" }