The ancient blue oak woodlands of California: longevity and hydroclimatic history
The ancient blue oak woodlands of California: longevity and hydroclimatic history
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加利福尼亚州古老的蓝橡林地：长寿和水文气候历史
DOI：
10.1175/2013ei000518.1
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发表时间：
2013
影响因子：
2
通讯作者：
D. Cayan
中科院分区：
文献类型：
--
作者：
D. Stahle;R. D. Griffin;D. Meko;M. Therrell;J. Edmondson;M. K. Cleaveland;L. Stahle;D. Burnette;J. Abatzoglou;K. Redmond;M. Dettinger;D. Cayan
古老的蓝色橡树仍然广泛分布在加利福尼亚州的海岸山脉、喀斯喀兹山脉和内华达山脉的山脚下。最大片完好无损的老橡树林地似乎存活在南海岸山脉崎岖偏远的地形上，以及山脚下的西部和西南部。拉森。在作者对老树林的采样中，大多数蓝橡树似乎是在19世纪中后期被吸收到树冠上的。采样的最老的活着的蓝橡树超过459岁，几个死掉的蓝橡树圆木有500多个年轮。对降水敏感的树木年轮年表长达700年，是从古老的蓝色橡树和原木发展而来的。蓝橡树的年轮宽度年表与冷季降水总量、加利福尼亚州主要河流的径流以及旧金山湾的河口水质密切相关。一个由36个蓝橡树年表组成的新网络记录了L……
AbstractAncient blue oak trees are still widespread across the foothills of the Coast Ranges, Cascades, and Sierra Nevada in California. The most extensive tracts of intact old-growth blue oak woodland appear to survive on rugged and remote terrain in the southern Coast Ranges and on the foothills west and southwest of Mt. Lassen. In the authors' sampling of old-growth stands, most blue oak appear to have recruited to the canopy in the middle to late nineteenth century. The oldest living blue oak tree sampled was over 459 years old, and several dead blue oak logs had over 500 annual rings. Precipitation sensitive tree-ring chronologies up to 700 years long have been developed from old blue oak trees and logs. Annual ring-width chronologies of blue oak are strongly correlated with cool season precipitation totals, streamflow in the major rivers of California, and the estuarine water quality of San Francisco Bay. A new network of 36 blue oak chronologies records spatial anomalies in growth that arise from l...