气候变化领域集成服务门户(CCPortal): Assisted migration poleward rather than upward in elevation minimizes frost risks in plantations

CCPortal

DOI	10.1016/j.crm.2021.100380
	Assisted migration poleward rather than upward in elevation minimizes frost risks in plantations
	Sang Z.; Hamann A.; Aitken S.N.
发表日期	2021
ISSN	2212-0963
卷号	34
英文摘要	When assisted migration is used to address climate change, tree seedlings may have to be moved to substantially colder environments in anticipation of climate warming over their life span. Here, we evaluate frost risks for four economically important forest tree species of western Canada, Douglas-fir (Pseudotsuga menziesii), lodgepole pine (Pinus contorta), interior spruce (Picea glauca, P. engelmannii, and their hybrids), and western larch (Larix occidentalis), when moved to adjacent northern and higher elevation seed zones that are cooler by approximately 2 °C. Changes to risks of damaging frosts among seed zones are evaluated during two 30-day periods, after dormancy release in spring and before onset of dormancy in fall, assuming a temperature-dominated day of bud break and a critical photoperiod-controlled onset of dormancy in fall. Based on daily interpolated climate data between 1980 and 2019, we find that late spring and early fall frost risks do not change significantly for transfers toward the north (<1 percentage point in most cases). In contrast, moving planting stock toward higher elevation generally leads to a substantial increase in exposure to unseasonal frosts (late spring frosts: 0.5% to 9.4%, early fall frosts: 0.8% to 17.1%). We conclude that transfers toward the north are preferable to transfers up in elevation in reforestation of these tree species in western Canada. © 2021 The Authors
英文关键词	Altitude transfer; Assisted migration; Climate change; Frost risk; Latitude transfer
语种	英语
来源期刊	Climate Risk Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/256108
作者单位	Department of Renewable Resources, University of Alberta, 751 General Services Building, Edmonton, AB T6G 2H1, Canada; University of British Columbia, Department of Forest and Conservation Sciences, Faculty of Forestry, 3041, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada
推荐引用方式 GB/T 7714	Sang Z.,Hamann A.,Aitken S.N.. Assisted migration poleward rather than upward in elevation minimizes frost risks in plantations[J],2021,34.
APA	Sang Z.,Hamann A.,&Aitken S.N..(2021).Assisted migration poleward rather than upward in elevation minimizes frost risks in plantations.Climate Risk Management,34.
MLA	Sang Z.,et al."Assisted migration poleward rather than upward in elevation minimizes frost risks in plantations".Climate Risk Management 34(2021).