Northeastern North America as a potential refugium for boreal forests in a warming climate

被引：141

作者：

D'Orangeville, L. ^{[1
,2
]}

Duchesne, L. ^{[3
]}

Houle, D. ^{[3
,4
]}

Kneeshaw, D. ^{[1
]}

Cote, B. ^{[5
]}

Pederson, N. ^{[6
]}

机构：

[1] Univ Quebec, Ctr Etude Foret, Case Postale 8888,Succursale Ctr Ville, Montreal, PQ H3C 3P8, Canada

[2] Indiana Univ, Dept Biol, 1001 East 3rd St,Jordan Hall 142, Bloomington, IN 47405 USA

[3] Minist Forets Faune & Parcs Quebec, Direct Rech Forestiere, 2700 Einstein, Quebec City, PQ G1P 3W8, Canada

[4] Consortium Climatol Reg & Adaptat Changements Cli, 550 Sherbrooke W, Montreal, PQ H3A 1B9, Canada

[5] McGill Univ, Dept Nat Resource Sci, 21 111 Lakeshore Rd, Ste Anne De Bellevue, PQ H9X 3V9, Canada

[6] Harvard Forest, 324 North Main St, Petersham, MA 01366 USA

来源：

SCIENCE | 2016年 / 352卷 / 6292期

基金：

美国国家科学基金会;

关键词：

BLACK SPRUCE FORESTS; NET PRIMARY PRODUCTION; EASTERN CANADA; DROUGHT STRESS; TREE GROWTH; CARBON; IMPACTS; PRODUCTIVITY; TEMPERATURES; 20TH-CENTURY;

D O I：

10.1126/science.aaf4951

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

High precipitation in boreal northeastern North America could help forests withstand the expected temperature-driven increase in evaporative demand, but definitive evidence is lacking. Using a network of tree-ring collections from 16,450 stands across 583,000 km(2) of boreal forests in Quebec, Canada, we observe a latitudinal shift in the correlation of black spruce growth with temperature and reduced precipitation, from negative south of 49 degrees N to largely positive to the north of that latitude. Our results su: zest that the positive effect of a warmer climate on growth rates and growing season length north of 49 degrees N outweighs the potential negative effect of lower water availability. Unlike the central and western portions of the continent's boreal forest, northeastern North America may act as a climatic refugium in a warmer climate.

引用

页码：1452 / 1455

页数：4

共 34 条

[1]

[Anonymous], 2013, CLIMATE CHANGE 2013

[2] 500 years of regional forest growth variability and links to climatic extreme events in Europe [J].