{"id":"fe245d97-9857-4179-8f54-5ce6a1172f0c","title":"中国天山中西部树木年轮年表以及树轮中的汞浓度变化（1818-2013）","title_en":"Variations of mercury concentrations in tree rings and tree ring chronology in central and western Tianshan Mountains, China (1818-2013)","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":"根据树木年轮学的方法，采集天山中部（乌鲁木齐后峡）以及西部（伊犁库尔德宁）的雪岭云杉。通过传统的树木年轮学的方法进行样品的处理、定年，并建立了天山中西部雪岭云杉的宽度年表。再根据树轮同位素的方法选四根树芯进行清洗、风干后在显微镜下用手术刀进行样品的剥离。采用冷原子吸收的原理，用Hydra IIde 进行汞含量的测量。建立五年分辨率的中西部树轮汞污染记录。低频上记录的汞污染在逐渐的加强，结果和全球的汞排放有较为相似的趋势。在天山中部，人类的排放是主要的影响因素，树轮中的汞污染记录揭露了当地的汞沉降变化。相比较冰芯中的记录，二战之后树轮中汞有更为急剧的上升。结果表明在偏远地区，树轮可以作为一个区域的汞污染检测器并反映了低频的汞浓度变化趋势。","doi":"10.11888/Ecolo.tpdc.270502","projection":null,"language":"zh","share_type":"online","east":87.18,"west":82.83,"south":43.13,"north":43.22,"scale":null,"crs":null,"filesize":0.25,"share_policy":"a","ts_created":"2019-01-13T01:20:38.541536+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-19T01:20:03.013385+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":null,"project":[11],"specials":["f2a78cde-1c98-4241-94dc-7532eba32b80"],"cite":null,"review_status":5,"review_invite":[{"user_name":"张扬建","username":"naqu3228","email":"zhangyj@igsnrr.ac.cn","is_cancel_expert":true}],"review_editor":{"id":21054,"last_login":"2022-04-10T10:49:12.540341+08:00","username":"tingting","email":"panxd@itpcas.ac.cn","is_active":true,"is_staff":true,"user_name":"潘小多"},"data_sources":"","temporal_resolution":"1 year < x < 10 year","spatial_resolution":"","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[6],"subtopics":{"metadata":"fe245d97-9857-4179-8f54-5ce6a1172f0c","three_pole":null,"third_pole":"XDA20040501"},"username":"XDA20040500","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":1998}