{"id":"09239e1a-98b3-441a-9793-38573354af50","title":"年楚河流域耕地土壤理化指标数据集（2019）","title_en":"Data set of physical and chemical indicators of the soil environment of arable land in the Nyangqu River Basin in 2019","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"表格形式，可以采用EXCEL打开查看和分析.","description":"数据为西藏“一江两河”地区年楚河流域的耕地土壤理化指标数据。包括土壤容重、土壤质量含水量、土壤体积含水量、土壤总孔隙度、土壤质地（黏粒、粉粒和砂砾）、土壤pH值、土壤有机质、土壤全氮、土壤全磷、土壤全钾、土壤碱解氮、土壤有效磷和土壤速效钾等；土壤样品为3-5个样点组成的混合样，实验分析参加国家相关标准，土壤容重、土壤质量含水量、体积含水量和土壤总孔隙度均采用环刀烘干法测定，土壤质地用激光粒度仪测定，pH采用玻璃电极法；有机质采用重铬酸钾容量法；全氮采用凯氏定氮法；全磷采用酸融法-钼娣抗比色法；全钾采用酸熔法-火焰光度计法；碱解氮采用氢氧化钠-碱解扩散法；有效磷采用Olsen法；速效钾采用NH4Ac浸提，火焰光度法。土壤重复样品偏差在3%以内。该数据可用于区域土壤环境质量分析，为耕地可持续利用提供科学指导。","doi":"10.11888/Terre.tpdc.271912","projection":"","language":"zh","share_type":"online","east":92.7,"west":87.0,"south":28.02,"north":30.6,"scale":25000000,"crs":null,"filesize":0.17,"share_policy":"a","ts_created":"2021-12-22T15:54:05.305600+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-12-23T15:21:22.770705+08:00","time_description":"2019年","datas_group":2,"time_description_en":"2019","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"--","spatial_resolution":"--","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[21],"subtopics":{"metadata":"09239e1a-98b3-441a-9793-38573354af50","three_pole":null,"third_pole":null},"username":"刘林山","review_time":null,"protected_duration":0,"protected_describe":"2年保护期，数据未全部获取，暂未进行学术研究，因此申请保护期","is_important":false,"hit_count":22}