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Impacts of climate change, weather extremes and alternative strategies in managed forests
Écoscience ( IF 1.3 ) Pub Date : 2018-09-14 , DOI: 10.1080/11956860.2018.1515597
Narayanan Subramanian 1 , Urban Nilsson 1 , Magnus Mossberg 1 , Johan Bergh 2
Affiliation  

The growth rate of most tree species in boreal forests will increase with changing climate. This increase is counterbalanced by an increased risk of damage due to extreme weather events. It is believed that the risk of storm damage will increase over time, especially if forests continue to be managed as they are today. In this study, a new landscape-level hybrid forest growth model 3PG-Heureka was developed and simulations were performed to predict the damage caused by storm events in Kronoberg county, over a period of 91 years (2010–2100) with different alternative management regimes under various climatic scenarios (historic, RCP4.5 and RCP8.5). The results indicate that damage caused by storm events could drastically reduce the annual volume increment and annual net revenue obtained from forest landscapes if current forest management regimes are used. These problems can be reduced by adopting alternative management strategies involving avoiding thinning, shorter rotation periods and planting alternative tree species. Alternative management strategies could potentially improve annual volume increments and net revenue obtained while reducing storm-felling. Planting Scots pine instead of Norway spruce across the landscape to minimize storm damage is predicted to be less effective than reducing rotation periods.



中文翻译:

人工林中气候变化,极端天气和替代策略的影响

随着气候的变化,北方森林中大多数树木的生长速度将增加。由于极端天气事件造成的损坏风险增加,因此抵消了这种增加。人们认为,风暴破坏的风险会随着时间的流逝而增加,特别是如果继续按今天的方式管理森林。在这项研究中,开发了一种新的景观级混合林生长模型3PG-Heureka,并进行了模拟以预测在91年(2010年至2100年)期间克罗诺贝格县风暴事件造成的破坏,并采用了不同的替代管理制度在各种气候情况下(历史记录,RCP4.5和RCP8.5)。结果表明,如果使用当前的森林管理制度,由风暴事件造成的破坏可能会大大减少森林景观的年体积增加量和年净收入。这些问题可以通过采取替代管理策略来减少,这些策略包括避免间伐,缩短轮作周期和种植替代树种。替代管理策略可以潜在地改善年度交易量增量和获得的净收入,同时减少暴风雨。预计在景观中种植樟子松而不是挪威的云杉以最大程度地减少暴风雨的破坏效果不如缩短轮换周期。替代管理策略可以潜在地改善年度交易量增量和获得的净收入,同时减少暴风雨。预计在景观中种植樟子松而不是挪威的云杉以最大程度地减少暴风雨的破坏效果不如缩短轮换周期。替代管理策略可以潜在地改善年度交易量增量和获得的净收入,同时减少暴风雨。预计在景观中种植樟子松而不是挪威的云杉以最大程度地减少暴风雨的破坏效果不如缩短轮换周期。

更新日期:2018-09-14
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