{"id":"708bae73-9455-43ab-b944-f4702f70c2a3","title":"黑河流域HWSD土壤质地数据集（2009）","title_en":"The HWSD soil texture dataset of the Heihe River Basin (2009)","serial":"黑河流域","user_limit":"本数据是由黑河计划数据管理中心整理，数据来源于世界和谐土壤数据库(HWSD)，用户在使用数据时请致谢本数据中心,并在参考文献部分引用本元数据提供的引用格式。","instructions":"","description":"数据来源于联合国粮农组织（FAO）和维也纳国际应用系统研究所(IIASA)所构建的世界土壤数据库(Harmonized World Soil Database,HWSD)， 该数据库于2009年3月26日发布了1.1版本。数据分辨率为1km。中国境内数据源1：100万土壤数据。采用的土壤分类系统主要为FAO-90。\n土壤属性表主要字段包括：\nSU_SYM90（FAO90土壤分类系统中土壤名称)\nSU_SYM85(FAO85分类)\nT_TEXTURE(顶层土壤质地)\nDRAINAGE(19.5)；\nROOTS：String(到土壤底部存在障碍的深度分类)； \nSWR：String (土壤含水量特征)；\nADD_PROP： Real (土壤单元中与农业用途有关的特定土壤类型)；\nT_GRAVEL：Real (碎石体积百分比)；T_SAND： Real (沙含量)；\nT_SILT： Real (淤泥含量)；\nT_CLAY：Real (粘土含量)；\nT_USDA_TEX： Real (USDA土壤质地分类)；\nT_REF_BULK： Real (土壤容重)；\nT_OC： Real (有机碳含量)；\nT_PH_H2O：Real (酸碱度)\nT_CEC_CLAY：Real (粘性层土壤的阳离子交换能力)；\nT_CEC_SOIL： Real (土壤的阳离子交换能力)\nT_BS：Real (基本饱和度)；\nT_TEB： Real (交换性盐基)；\nT_CACO3： Real (碳酸盐或石灰含量)\nT_CASO4： Real (硫酸盐含量)；\nT_ESP： Real (可交换钠盐)；\nT_ECE： Real (电导率)。\n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)。\n\n该数据可为地球系统建模者提供模型输入参数，农业角度可用来研究生态农业分区，粮食安全和气候变化等。","doi":"","projection":"4326","language":"zh","share_type":"online","east":104.2,"west":96.1,"south":37.7,"north":43.3,"scale":null,"crs":null,"filesize":0.56,"share_policy":"a","ts_created":"2013-07-26T21:55:10+08:00","doi_type":"国际公开共享数据","ts_updated":"2021-04-19T21:27:04.652608+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":"栅格数据","project":[10,11,15],"specials":["4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":"FAO, IIASA, ISRIC, et al. Harmonized World Soil Database (version 1.1)[R]. FAO,Rome, Italy and IIASA, Laxenburg, Austria, 2009","review_status":5,"review_invite":[],"review_editor":null,"data_sources":"","temporal_resolution":null,"spatial_resolution":null,"license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[85],"subtopics":{"metadata":"708bae73-9455-43ab-b944-f4702f70c2a3","three_pole":null,"third_pole":null},"username":"盖春梅","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":25589}