{
    "created": "2024-09-19 12:28:54",
    "updated": "2026-05-09 13:05:36",
    "id": "3db99d19-3f48-4cbd-9541-41eb046c9e6a",
    "version": 6,
    "ds_topic": null,
    "title_cn": "塔克拉玛干沙漠表土样品磁化率数据集（2023年）",
    "title_en": "",
    "ds_abstract": "<p>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。</p>",
    "ds_source": "<p>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。</p>",
    "ds_process_way": "<p>\"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2<em>2</em>2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\"</p>",
    "ds_quality": "<p>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。</p>",
    "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": "离线申请",
    "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,
    "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"
}