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首页> 外文期刊>Australian Forestry >Effects of selective logging and regeneration treatments on mortality of retained trees in Tasmanian cool temperate rainforest.
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Effects of selective logging and regeneration treatments on mortality of retained trees in Tasmanian cool temperate rainforest.

机译：塔斯马尼亚凉爽温带雨林选择性伐木和再生处理对保留树木死亡率的影响。

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The mortality of major Tasmanian rain forest tree species, principally myrtle (Nothofagus cunninghamii) and sassafras (Atherosperma moschatum), was recorded for 10-26 years on transects established to monitor myrtle wilt in trials of a range of selective logging and regeneration treatments and in an untreated control area. At the sites monitored for over 20 years, cumulative mortality of myrtle and sassafras ranged from 25 to 45% and 25 to 69%, respectively. Following the logging and/or regeneration treatments, annual mortality of myrtle and sassafras was initially high at all sites, including at the untreated control area. However, about 3-9 years after the disturbance, mortality of myrtle declined significantly and stabilized at background levels previously reported for undisturbed myrtle forests. Annual mortality of sassafras also declined but lesser than myrtle. Mortality rates at the control site followed a similar pattern to treated sites. The greatest increase in myrtle and sassafras deaths occurred in the area most heavily selectively logged. Areas lightly selectively logged and/or regeneration treatments had mortality increases similar to the control area. The importance of minimizing tree damage to myrtle trees in any future operations to minimize spread of myrtle wilt is emphasized..
机译：塔斯马尼亚主要雨林树种（主要是桃金娘（Nothofagus cunninghamii）和and（Atherosperma moschatum））的死亡率在一系列选择性伐木和再生处理试验以及监测中建立的监测桃金娘枯萎的断面记录了10-26年。未经处理的控制区域。在超过20年的监测地点，桃金娘和的累积死亡率分别为25％至45％和25％至69％。经过伐木和/或再生处理后，桃金娘和的年死亡率最初在所有地点都很高，包括在未经处理的控制区。但是，在干扰发生后约3-9年，桃金娘的死亡率显着下降，并稳定在先前报道的未受干扰的桃金娘林的背景水平。的年死亡率也有所下降，但低于桃金娘。对照部位的死亡率与治疗部位相似。桃金娘和的死亡的最大增加发生在最有选择性的伐木地区。轻微选择伐木和/或再生处理的区域死亡率增加，与控制区域相似。强调了在未来的任何操作中将对桃金娘树的树木损害最小化以最小化桃金娘枯萎的重要性。

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