联合国粮农组织（FAO）和国际应用系统分析研究所（IIASA）结合世界各地区和国家至今已有的土壤信息，并结合联合国粮农组织-科教文组织的世界土壤地图，形成了一个全新的土壤数据库——世界和谐土壤数据库（HWSD）。中国境内数据源为第二次全国土地调查南京土壤研究所提供的1:100万土壤数据。该数据库将对改进人们对当前和未来的土壤生产力、土壤碳储量、土地资源、水资源及土壤退化方面的认识有重要意义。
", "ds_source": "土壤属性表主要字段包括：SU_SYM90（FAO90土壤分类系统中土壤名称)：SU_SYM85(FAO85分类)； T_TEXTURE(顶层土壤质地)；DRAINAGE(19.5)；ROOTS： String(到土壤底部存在障碍的深度分类)； SWR：String (土壤含水量特征)；ADD_PROP： Real (土壤单元中与农业用途有关的特定土壤类型)；T_GRAVEL：Real (碎石体积百分比)；T_SAND： Real (沙含量)；T_SILT： Real (淤泥含量)；T_CLAY：Real (粘土含量)；T_USDA_TEX： Real (USDA土壤质地分类)；T_REF_BULK： Real (土壤容重)；T_OC： Real (有机碳含量)；T_PH_H2O：Real (酸碱度)T_CEC_CLAY：Real (粘性层土壤的阳离子交换能力)；T_CEC_SOIL： Real (土壤的阳离子交换能力)T_BS：Real (基本饱和度)；T_TEB： Real (交换性盐基)；T_CACO3： Real (碳酸盐或石灰含量)T_CASO4： Real (硫酸盐含量)；T_ESP： Real (可交换钠盐)；T_ECE： Real (电导率)。其中以T_开头属性字段表示上层土壤属性（0-30cm），以S_开头属性字段表示下层土壤属性（30-100cm）(FAO 2009)。
", "ds_process_way": "通过该数据库，将改进人们对当前和未来的土壤生产力、土壤碳贮量以及全球土壤碳贮量等的认识。并能帮助人们认识土地资源和水资源的有限性，正确评估土壤退化特别是土壤流失的风险。通过了解土壤的理化性质，还能帮助人们获取以下信息，如土壤对废弃物的过滤功能、对生物生长的影响等。并对土壤生产潜力及土壤对气候变化的响应等做出正确判断。
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2009-01-01 00:00:00", "ds_acq_end_time": "2009-12-20 00:00:00", "ds_acq_place": "黄河上游", "ds_acq_lon_east": 112.31666666666666, "ds_acq_lat_south": 32.0, "ds_acq_lon_west": 95.0, "ds_acq_lat_north": 42.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 3915045, "ds_files_count": 2, "ds_format": "adf", "ds_space_res": null, "ds_time_res": "年", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "34ada58b-88c8-462d-a9a5-43aa21ba86ba.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": null, "ds_from_station": null, "organization_id": "9c4867b1-5cb1-4de0-abeb-df42547bf41e", "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": "2020-12-23 10:20:42", "last_updated": "2023-08-23 16:46:07", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.Westdc.2020.688", "i18n": { "en": { "title": "1: 1 million soil types map of the Yellow River Upstream", "ds_format": "", "ds_source": "The main fields of the soil attribute table include: Su ﹣ sym90 (soil name in the fao90 soil classification system): Su ﹣ sym85 (fao85 classification); t ﹣ text (top soil texture); drag (19.5); roots: string (depth classification with obstacles to the bottom of the soil); SWR: string (soil moisture content characteristics); add ﹣ prop: real (specific soil type related to agricultural use in soil unit); t_gravel: real (volume percentage of gravel); t_sand: real (sand content); t_salt: real (silt content); t_clay: real (clay content); t_usda_tex: real (USDA soil texture classification); t_ref_bulk: real (soil bulk weight); t_oc: real (organic carbon content); t_ph_h2o: real (PH) t ﹣ CEC ﹣ clay: real; t ﹣ CEC ﹣ soil: real; t ﹣ BS: real (basic saturation); t ﹣ TEB: real (exchangeable base); t ﹣ CaCO3: real (carbonate or lime content); t ﹣ CaSO4: real (sulfate content); t ﹣ ESP: real (exchangeable sodium salt); t ﹣ ECE: real (conductivity). The attribute field beginning with t_represents the upper soil attribute (0-30cm), and the attribute field beginning with s_represents the lower soil attribute (30-100cm) (FAO 2009).
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "FAO and IIASA combined with the soil information of all regions and countries in the world up to now, and combined with the world soil map of fao-unesco, formed a new soil database - world harmonious soil database (hwsd). The data source in China is 1:1 million soil data provided by Nanjing Soil Research Institute of the second national land survey. The database will be of great significance to improve people's understanding of current and future soil productivity, soil carbon storage, land resources, water resources and soil degradation.
", "ds_time_res": "年", "ds_acq_place": "", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Through this database, people's understanding of current and future soil productivity, soil carbon storage and global soil carbon storage will be improved. It can help people to understand the limitation of land and water resources, and correctly assess the risk of soil degradation, especially soil loss. Through understanding the physical and chemical properties of soil, it can also help people to obtain the following information, such as the filtering function of soil on waste, the impact on biological growth, etc. The potential of soil production and the response of soil to climate change were correctly judged.
", "ds_ref_instruction": " In order to respect intellectual property rights, protect the rights and interests of data authors, expand the services of data centers, and evaluate the application potential of data, data users are requested to clearly indicate the data source and data authors in the research results (including published papers, works, data products and unpublished research reports, data products, etc.) produced by using data. For data reprinted (secondary or multiple releases), the author must also indicate the source of the original data." } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 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, "belong_to_nieer": false, "ds_topic_tags": [ "1:100万", "黄河上游", "土壤图", "土地分类" ], "ds_subject_tags": [ "大地构造学" ], "ds_class_tags": [], "ds_locus_tags": [ "黄河上游" ], "ds_time_tags": [ 2009 ], "ds_contributors": [ { "true_name": "薛娴", "email": "xianxue@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": "杜鹤强", "email": "dilikexue119@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "" } ], "ds_managers": [ { "true_name": "薛娴", "email": "xianxue@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "基础地理" }