{"id":"e7dd70b4-6030-4ece-ab22-9332ad1d47fe","title":"塔里木河下游地下水水质数据集（2000-2007）","title_en":"Data set of groundwater quality in the lower reaches of Tarim River (2000-2007)","serial":"中国西部环境与生态科学研究计划","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":"文件命名：数据以文本doc格式存储；\n数据读取：可用Office、Wps等办公软件读取。","description":"在塔里木河下游，地下水是维系天然植被生存的惟一水源。地下水位变化直接影响着植物的生长和衰败，控制着植物群落的演变与组成。加强地下水化学特征研究是水资源质量评价的重要内容，对流域水资源利用方式、可持续发展、管理及生态环境的保护与建设都具有重要意义。\n定点、定期对塔里木河下游的40眼地下水位监测井取得地下水水样，密封后送入实验室进行化学分析，分析内容包括：矿化度、pH、CO3=、HCO3-、Cl-、SO4=、Ca++、Mg++、Na+、K+等13项指标。 分析方法分别是:\n（1）矿化度：重量法；\n（2）总碱度、HCO3-和CO3=：双指示剂滴定法；\n（3）Cl-：硝酸银滴定法；\n（4）SO4=：EDTA容量法和铬酸钡光度法；\n（5）总硬度：EDTA容量法；\n（6）Ca++、Mg++：EDTA容量法和原子吸收光度法；","doi":"10.11888/Hydro.tpdc.270608","projection":null,"language":"zh","share_type":"online","east":91.0,"west":78.0,"south":38.5,"north":42.0,"scale":null,"crs":null,"filesize":5.07,"share_policy":"a","ts_created":"2013-06-11T20:42:00+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-19T20:01:02.920755+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":"文本","project":[10,11],"specials":[],"cite":null,"review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":"Yearly","spatial_resolution":"","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[160,161],"subtopics":{"metadata":"e7dd70b4-6030-4ece-ab22-9332ad1d47fe","three_pole":null,"third_pole":null},"username":"盖春梅","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":5683}