A two thousand year history of a northern Swedish boreal forest stand
A two thousand year history of a northern Swedish boreal forest stand
复制标题
瑞典北部北方森林两千多年的历史
DOI：
10.2307/3235786
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发表时间：
1990
影响因子：
2.8
通讯作者：
O. Zackrisson
中科院分区：
文献类型：
--
作者：
R. Bradshaw;O. Zackrisson
.演替过程中北方瑞典北方森林的调查，在过去的2000年的花粉，木炭碎片和昆虫遗骸保存在一个大湖泊的小岛上的一个深莫尔殖层的分析。频繁的火、风、虫和洪水干扰是影响植被动态的主要因素。逐步气候诱导的替代白桦云杉的干扰动力学叠加。云杉树最早在小冰河时期建立，这是有记录以来最长的无火时期。来自冰岛的一层薄薄的火山灰证实了小冰河时代开始的年代学。樟子松和杜鹃花科目前在岛上的重要性是最近干扰频率增加的产物。干扰制度确保社区与主要气候保持平衡。
. Successional processes within northern Swedish boreal forest are investigated for the last 2000 years by analysis of pollen, charcoal fragments and insect remains preserved in a deep mor humus layer on a small island in a large lake. Frequent disturbances by fire, blow-down, insect attack and flood have been the chief influence on vegetation dynamics. The gradual climatically induced replacement of Betula pubescens by Picea abies is superimposed on the disturbance dynamics. Picea first became established during the Little Ice Age, which was the longest period without fire in the record. A thin layer of volcanic ash from Iceland confirms the chronology at the onset of the Little Ice Age. The present importance of Pinus sylvestris and Ericaceae on the island is a product of a recent increase in disturbance frequency. The disturbance regime ensures that the communities stay in equilibrium with prevailing climate.