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首页> 外文期刊>Ecological Applications >COMPUTATIONS ON FROST DAMAGE TO SCOTS PINE UNDER CLIMATIC WARMING IN BOREAL CONDITIONS
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COMPUTATIONS ON FROST DAMAGE TO SCOTS PINE UNDER CLIMATIC WARMING IN BOREAL CONDITIONS

机译：气候条件下暖风下矮小松对冻害的计算

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摘要

To investigate the risk of frost damage to Scots pine (Pinus sylvestris L.) in northern regions under climatic warming, a submodel for such damage to trees was included in a forest ecosystem model of the gap type. An annual growth multiplier describing the effects of frost was calculated with the help of simulated daily frost hardiness and daily minimum temperature. The annual growth multiplier was used in the main ecosystem model when simulating the development of a tree stand using a time step of one year. Simulations of the growth and development of Scots pine stands in southern Finland (61 degrees N) under an elevating temperature indicated that climatic warming could increase the risk of frost damage due to premature onset of growth during warm spells in the late winter and early spring. Risk of frost damage implies uncertainty in yield expectations from boreal forest ecosystems in the event of climatic warming. [References: 38]
机译：为了调查气候变暖对北部地区的赤松（Pinus sylvestris L.）造成霜冻损害的风险，在缺口类型的森林生态系统模型中包括了对树木造成这种损害的子模型。在模拟的每日霜冻硬度和每日最低温度的帮助下，计算了描述霜冻影响的年增长率。当使用一年的时间步长模拟林分的发育时，主要生态系统模型中使用了年增长率。在芬兰南部（61华氏度）的高温下对苏格兰松树生长和发育的模拟表明，气候变暖可能会由于冬季后期和初春暖季期间过早生长而增加霜冻的风险。霜冻破坏的风险意味着在气候变暖的情况下，北方森林生态系统的预期产量不确定。 [参考：38]

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