{"id":"3eae8db1-0e03-4320-ba0e-47cd1800b716","title":"河湖源土壤理化性质数据集（2020）","title_en":"Data set of soil physicochemical properties in river and lake source (2020)","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":"excel格式，可在微软EXCEL软件中打开和分析。","description":"于2020年8月~9月在西藏自治区的河湖源区开展规范的野外调查和土壤样品采集工作，采集土壤样品共150个。数据集包括序号、样地号、经纬度、海拔、土壤含水量、容重、有机质、全氮、全磷、全钾、pH和机械组成（砂粒、粉粒和粘粒含量），数据格式为Excel表。各项土壤性质的测定参考《土壤环境质量监测技术规范》的要求，通过野外采样和室内测试获得。土壤容重分别测量5–10 cm和15-20 cm土层。机械组成根据国际制分类标准，划分为砂粒（2–0.02 mm）、粉粒（0.02–0.002 mm）和粘粒（< 0.002 mm）。土壤去除石砾、根系等杂质并粉碎，土壤有机质、全氮、全磷、全钾的测定是全样。pH用电位法测定，水土比为2.5：1。土壤样品的采集参照土壤样品采集规范，室内分析测试参照标准的分析方法，通过测定重复样品和标准样品对数据质量进行控制。此数据可以为综合评估典型土地利用变化的环境效应提供数据支撑。","doi":"10.11888/Terre.tpdc.271920","projection":"","language":"zh","share_type":"protected","east":87.0,"west":78.0,"south":28.0,"north":34.0,"scale":null,"crs":null,"filesize":0.02,"share_policy":"a","ts_created":"2021-12-22T16:58:30.911549+08:00","doi_type":"拥有自主知识产权","ts_updated":"2022-02-23T17:19:34.103907+08:00","time_description":"2020","datas_group":0,"time_description_en":"2020","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"冯金良","username":"冯金良","email":"fengjl@itpcas.ac.cn","is_cancel_expert":false}],"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":"3eae8db1-0e03-4320-ba0e-47cd1800b716","three_pole":null,"third_pole":null},"username":"刘林山","review_time":null,"protected_duration":24,"protected_describe":null,"is_important":false,"hit_count":186}