本数据库涵盖敦煌-瓜州、民勤、奈曼三大典型区。土壤理化数据包括容重、粒度、养分等指标，于2023年10月按不同风蚀荒漠化程度采集，通过标准实验方法测定。数据高质量可靠，服务于风蚀荒漠化评价与防治研究。", "ds_source": "
原始土壤数据来自2023年10月在敦煌-瓜州、民勤、奈曼的野外采样，共78个样品。数据包括容重、粒度（机械组成）、养分（全氮、有机质、全磷等）指标，通过环刀法、激光粒度仪、凯氏定氮法等方法测定。数据格式为CSV，可通过DOI在线访问。", "ds_process_way": "
容重通过环刀尺寸和样品质量计算；粒度样品经双氧水和盐酸处理，使用马尔文MS3000激光粒度仪测量；养分指标按国家标准（如NY/T 53-1987、HJ 695-2014等）检测，采用凯氏定氮法、燃烧法、比色法、火焰光度法等。", "ds_quality": "
土壤容重测量误差长度0.02 mm、质量0.001 g；粒度测量两次取平均值；养分检测符合《土壤环境监测技术规范》（HJ/T 166-2004），仪器经检定/校准，人员考核合格。", "ds_acq_start_time": "2023-10-01 00:00:00", "ds_acq_end_time": "2023-10-31 00:00:00", "ds_acq_place": "敦煌市瓜州县,民勤县,奈曼旗", "ds_acq_lon_east": 121.58333333333333, "ds_acq_lat_south": 38.083333333333336, "ds_acq_lon_west": 92.21666666666667, "ds_acq_lat_north": 43.2, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 30680, "ds_files_count": 2, "ds_format": "Excel", "ds_space_res": "", "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "4c9cfe03-4772-41ef-b4e3-fb4ec4d50a22.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "6d0aa454-9b64-4be5-b0cd-4cc796e6aea0", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.45" ], "quality_level": 3, "publish_time": "2026-03-13 18:42:33", "last_updated": "2026-03-13 18:42:33", "protected": false, "protected_to": "2028-03-01 00:00:00", "lang": "zh", "cstr": "11738.11.NCDC.DESERTIFICATION.DB7176.2026", "i18n": { "en": { "title": "Evaluation Criteria for Wind Erosion and Desertification in Northern China - Reference Dataset of Soil Physical and Chemical Indicators", "ds_format": "Excel", "ds_source": "
The original soil data comes from field sampling in Dunhuang Guazhou, Minqin, and Naiman in October 2023, with a total of 78 samples. The data includes indicators such as bulk density, particle size (mechanical composition), and nutrients (total nitrogen, organic matter, total phosphorus, etc.), which are determined by methods such as the ring knife method, laser particle size analyzer, and Kjeldahl nitrogen determination method. The data format is CSV and can be accessed online through DOI.", "ds_quality": "
The measurement error of soil bulk density is 0.02 mm in length and 0.001 g in mass; the average of two particle size measurements is taken; The nutrient detection complies with the Technical Specifications for Soil Environmental Monitoring (HJ/T 166-2004), the instrument has been verified/calibrated, and the personnel have passed the assessment.", "ds_ref_way": "", "ds_abstract": "
This database covers three typical areas: Dunhuang Guazhou, Minqin, and Naiman. Soil physical and chemical data, including bulk density, particle size, nutrients, and other indicators, were collected in October 2023 according to different degrees of wind erosion and desertification, and measured using standard experimental methods. High quality and reliable data, serving the evaluation and prevention research of wind erosion and desertification.", "ds_time_res": "", "ds_acq_place": "Guazhou County, Minqin County, Naiman Banner, Dunhuang City", "ds_space_res": "", "ds_projection": "", "ds_process_way": "
The bulk density is calculated based on the size of the ring cutter and the mass of the sample; The particle size samples were treated with hydrogen peroxide and hydrochloric acid and measured using a Malvern MS3000 laser particle size analyzer; Nutrient indicators are tested according to national standards (such as NY/T 53-1987, HJ 695-2014, etc.) using Kjeldahl nitrogen determination method, combustion method, colorimetric method, flame photometry method, etc.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "ds_topic_tags": [ "风蚀", "荒漠化", "中国北方", "评价标准" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "敦煌瓜州", "民勤", "奈曼" ], "ds_time_tags": [ 2023 ], "ds_contributors": [ { "true_name": "罗小梅", "email": "luoxiaomei22@mails.ucas.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "谭宁静", "email": "tanningjing22@mails.ucas.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "张彩霞", "email": "zhangcaixia@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "王振亭", "email": "ztwang@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "罗小梅", "email": "luoxiaomei22@mails.ucas.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "罗小梅", "email": "luoxiaomei22@mails.ucas.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "沙漠与荒漠化" }