globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2014.02.035
Scopus记录号: 2-s2.0-84902174230
论文题名:
Comparative genetic responses to climate for the varieties of Pinus ponderosa and Pseudotsuga menziesii: Realized climate niches
作者: Rehfeldt G.E.; Jaquish B.C.; López-Upton J.; Sáenz-Romero C.; St Clair J.B.; Leites L.P.; Joyce D.G.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2014
卷: 324
起始页码: 126
结束页码: 137
语种: 英语
英文关键词: Biogeography ; Climate change impacts ; Douglas-fir ; Genecology ; Niche modeling ; Ponderosa pine
Scopus关键词: Decision trees ; Global warming ; Biogeography ; Climate change impact ; Douglas fir ; Genecology ; Ponderosa pines ; Algorithms ; algorithm ; climate effect ; climate prediction ; coniferous forest ; database ; error analysis ; forest inventory ; genotype-environment interaction ; global warming ; niche ; phytogeography ; Mexico [North America] ; Pinus ponderosa ; Pseudotsuga ; Pseudotsuga menziesii
英文摘要: The Random Forests classification algorithm was used to predict the occurrence of the realized climate niche for two sub-specific varieties of Pinus ponderosa and three varieties of Pseudotsuga menziesii from presence-absence data in forest inventory ground plots. Analyses were based on ca. 271,000 observations for P. ponderosa and ca. 426,000 observations for P. menziesii, with ca. 6% of the observations in each dataset recording the presence of one of the varieties. Classification errors to the respective databases attributable to fitting the models were ca. 5%, most of which were from falsely predicting varietal occurrence. Confusion in classifying varieties was nil. The primary drivers of the niche model were summer precipitation, winter precipitation and summer degree-days >5 C for the varieties of P. ponderosa and the summer-winter temperature differential, summer maximum temperatures and summer precipitation for the varieties of P. menziesii. Projected impacts of global warming using output from an ensemble of 17 general circulation models were greater for P. ponderosa than for P. menziesii and for varieties of both species from inland climates than from coastal. Projected impacts imply dire consequences for the varieties of P. menziesii occurring in Mexico. © 2014.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65934
Appears in Collections:影响、适应和脆弱性

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作者单位: USDA Forest Service, Rocky Mountain Research Station, Forestry Sciences Laboratory, 1221 S. Main, Moscow, ID 83843, United States; Research Branch, B.C. Ministry of Forests, Lands and Natural Resource Operations, Kalamalka Forestry Centre, 3401 Reservoir Rd., Vernon, BC V1B 2C7, Canada; Colegio de Postgraduados, Km 35.5 Carretera México-Texcoco, Montecillo, México CP 56230, Mexico; Instituto de Investigaciones Agropecuarias y Forestales, Universidad Michoacana de San Nicolás de Hidalgo (IIAF-UMSNH), Km 9.5 Carretera Morelia-Zinapécuaro, Tarímbaro, Michoacán 58880, Mexico; USDA Forest Service, Pacific Northwest Research Station, 3200 SW Jefferson Way, Corvallis, OR 97331-4401, United States; Department of Ecosystem Science and Management, Pennsylvania State University, University Park, PA 16802, United States; 449 Walls Road, Sault Ste. Marie, Ontario P6A 6K4, Canada

Recommended Citation:
Rehfeldt G.E.,Jaquish B.C.,López-Upton J.,et al. Comparative genetic responses to climate for the varieties of Pinus ponderosa and Pseudotsuga menziesii: Realized climate niches[J]. Forest Ecology and Management,2014-01-01,324
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