{"id":"13a1ed45-faf9-4724-bae8-3843bfaaaf1d","title":"青藏高原南部孔桑桥遗址沉积物DNA分析数据","title_en":"Sedimentary DNA analysis data at kongsangqiao site in southern Tibetan  Plateau","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":"Sedimentary DNA data at Kongsangqiao site_YangXY/GuZQ.xlsx","description":"粳稻（Oryza sativa subsp. japonica）和籼稻（Oryza sativa subsp. indica）是亚洲栽培稻（Oryza sativa）的两个亚种，其中籼稻在距今4000年前后驯化于南亚北部，而后传入中国并广泛种植直至今天，但其传入中国的时间和路线至今不清楚. 本文对西藏自治区孔桑桥遗址（海拔2676米）出土的木炭、炭化种子和果实、植硅体以及堆积物古DNA进行了分析，发现了炭化稻颖果、水稻扇型和横排哑铃型植硅体，并在堆积物古DNA中发现了籼稻的特异性基因序列. 炭化稻的直接测年结果为公元8世纪前后，这是中国境内目前发现的最早的籼稻遗存. 木炭分析结果，尤其是大量乔松（Pinus wallichiana）木炭的发现，显示孔桑桥遗址所处位置无法满足籼稻种植的积温条件，遗址的籼稻系由低海拔地区交换而来. 结合考古资料和文献记载，我们认为，起源于南亚北部的籼稻，至晚在公元8世纪沿着蕃尼古道进入青藏高原南缘，并可能经由吐蕃继续东传进入内地，但未来还需更多的植物考古工作进行验证.","doi":"10.11888/HumanNat.tpdc.271940","projection":"","language":"zh","share_type":"offline","east":85.35160556,"west":85.35160556,"south":28.38436667,"north":28.38436667,"scale":null,"crs":null,"filesize":0.01,"share_policy":"c","ts_created":"2022-01-17T15:00:20.451028+08:00","doi_type":"拥有自主知识产权","ts_updated":"2022-01-18T14:40:39.906956+08:00","time_description":"652-774AD","datas_group":2,"time_description_en":"652-774AD","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":"10 year < x < 100 year","spatial_resolution":"1m - 10m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[21],"subtopics":{"metadata":"13a1ed45-faf9-4724-bae8-3843bfaaaf1d","three_pole":null,"third_pole":null},"username":"谢海超","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":13}