Tree-ring width and maximum latewood density at the North American tree line: parameters of climatic change
Tree-ring width and maximum latewood density at the North American tree line: parameters of climatic change
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DOI：
10.1139/x92-171
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发表时间：
1992-09
影响因子：
2.2
通讯作者：
R. D’Arrigo;G. Jacoby;R. Free
中科院分区：
文献类型：
--
作者：
R. D’Arrigo;G. Jacoby;R. Free
在北美洲偏远的亚北极地区，仪器记录非常短且分布稀疏。然而，对亚北极气候的长期了解对于全球变化的研究至关重要。年轮宽度和最大晚材密度是互补的高分辨率参数，具有不同的环境和生理控制，可用于评估近几个世纪的气候变化。在本文中，我们对从白云杉（Piceaglauca (Moench) Voss）（北美主要纬向树系树种）的这些参数推断出的不同温度信息进行了比较。显示了加拿大北部森林-苔原过渡区沿宽间隔横断面的五个地点的年轮宽度和最大晚材密度年表（共同时期为 1720 年至 1977 年）。最大晚材密度对每年当地温度的正温度响应比年轮宽度的正温度响应更加一致，并且覆盖了更长的生长季节。不同于...
In remote subarctic North America, instrumental records are very short and sparsely distributed. Yet a long-term understanding of subarctic climate is critical to studies of global change. Annual tree-ring width and maximum latewood density are complementary, high-resolution parameters with different environmental and physiological controls that can be used to assess recent centuries of climatic change. In this paper we present a comparison of the different temperature information inferred from these parameters for white spruce (Piceaglauca (Moench) Voss), a dominant North American latitudinal tree line species. Ring-width and maximum latewood density chronologies (with a common period from 1720–1977) are shown for five sites along a widely spaced transect of the forest–tundra transition in northern Canada. The positive temperature response of maximum latewood density to year to year local temperatures is more consistent and covers a longer portion of the growing season than does that of ring width. Unlik...