Extension, of the New Zealand kauri (Agathis australis) chronology to 1724BC
Extension, of the New Zealand kauri (Agathis australis) chronology to 1724BC
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DOI：
10.1191/0959683606hl919rp
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发表时间：
2006-03-01
期刊：
影响因子：
2.4
通讯作者：
Ogden, J
中科院分区：
文献类型：
--
作者：
Boswijk, G;Fowler, A;Ogden, J
在北方半球已经建立了树木年轮年表，用于树木年轮气候学和古环境研究、放射性碳校准和考古年代测定。南半球也建立了许多树木年轮年表，主要是为了树木年轮气候学，但多千年年表是罕见的。因此，编制南半球的长期年表对于从长远角度看待地方、区域和全球范围的环境变化十分重要。本文描述了新西兰贝壳杉（Agathis australis）（贝壳杉）公元前911年至公元前1724年的年表。贝壳杉的亚化石（沼泽）是从北岛北部的17个沼泽地采集的。贝壳杉木材也是从奥克兰大学校园的一所世纪早期的房子里得到的。12个网站年表和I I独立的树序列构建和交叉匹配，产生一个3631年的记录，这是日历日期为公元前1724年至公元1907年对现代贝壳杉主年表。通过将现代贝壳杉数据与房屋木材和贝壳杉亚化石相结合，建立了一个新的长期年表AGAUc 04 a。这个新的年表跨越公元前1724年至公元1998年。它的长度与塔斯马尼亚和南美洲的年表相似，是新西兰迄今为止最长的树木年轮年表。长贝壳杉年表的最大意义在于它作为高质量古气候代用指标的潜力，特别是在厄尔尼诺-南方涛动现象的调查方面。该年表还可应用于极端环境事件的调查，树木生态学，考古学和放射性碳校准。
Long tree-ring chronologies have been constructed in the Northern Hemisphere for dendroclimatology and palaeoenvironmental studies, radiocarbon calibration and archaeological dating. Numerous tree-ring chronologies have also been built in the Southern Hemisphere, primarily for dendroclimatology, but multimillennial chronologies are rare. Development of long chronologies from the Southern Hemisphere is therefore important to provide a long-term perspective on environmental change at local, regional and global scales. This paper describes the extension of the New Zealand Agathis australis (kauri) chronology from AD 911 to 1724 BC. Subfossil (swamp) kauri was collected from 17 swamp sites in the upper North Island. Kauri timbers were also obtained from an early twentieth century house on the University of Auckland campus. Twelve site chronologies and I I independent tree-sequences were constructed and crossmatched to produce a 3631-yr record, which was calendar dated to 1724 BC-AD 1907 against the modern kauri master chronology. A new long chronology, AGAUc04a, was built by combining the modern kauri data with house timbers and subfossil kauri. This new chronology spans 1724 BC-AD 1998. It is of similar length to chronologies from Tasmania and South America and is the longest tree-ring chronology yet built in New Zealand. The greatest significance of the long kauri chronology lies in its potential as a high-quality palaeoclimate proxy, especially with regard to investigation of the El Nino-Southern Oscillation phenomenon. The chronology also has application to investigation of extreme environmental events, dendroecology, archaeology and radiocarbon calibration.