Evidence for declining forest resilience to wildfires under climate change

被引：488

作者：

Stevens-Rumann, Camille S. ^{[1
,2
]}

Kemp, Kerry B. ^{[3
]}

Higuera, Philip E. ^{[4
]}

Harvey, Brian J. ^{[5
]}

Rother, Monica T. ^{[6
,7
]}

Donato, Daniel C. ^{[5
,8
]}

Morgan, Penelope ^{[1
]}

Veblen, Thomas T. ^{[6
]}

机构：

[1] Univ Idaho, Dept Forest Rangeland & Fire Sci, Moscow, ID 83843 USA

[2] Colorado State Univ, Ft Collins, CO 80523 USA

[3] Nature Conservancy, Prairie, OR USA

[4] Univ Montana, Dept Ecosyst & Conservat Sci, Missoula, MT 59812 USA

[5] Univ Washington, Sch Environm & Forest Sci, Seattle, WA USA

[6] Univ Colorado, Boulder, CO 80309 USA

[7] Tall Timbers Res Stn & Land Conservancy, Tallahassee, FL USA

[8] Dept Nat Resources Washington State, Olympia, WA USA

来源：

ECOLOGY LETTERS | 2018年 / 21卷 / 02期

基金：

美国国家科学基金会;

关键词：

Climate change; forest recovery; forest resilience; tree regeneration; wildfire; POSTFIRE TREE REGENERATION; PONDEROSA PINE FORESTS; FIRE SEVERITY; VEGETATION RESPONSE; BEETLE OUTBREAKS; BURN SEVERITY; RECRUITMENT; MORTALITY; DROUGHT; ESTABLISHMENT;

D O I：

10.1111/ele.12889

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Forest resilience to climate change is a global concern given the potential effects of increased disturbance activity, warming temperatures and increased moisture stress on plants. We used a multi-regional dataset of 1485 sites across 52 wildfires from the US Rocky Mountains to ask if and how changing climate over the last several decades impacted post-fire tree regeneration, a key indicator of forest resilience. Results highlight significant decreases in tree regeneration in the 21st century. Annual moisture deficits were significantly greater from 2000 to 2015 as compared to 1985-1999, suggesting increasingly unfavourable post-fire growing conditions, corresponding to significantly lower seedling densities and increased regeneration failure. Dry forests that already occur at the edge of their climatic tolerance are most prone to conversion to non-forests after wildfires. Major climate-induced reduction in forest density and extent has important consequences for a myriad of ecosystem services now and in the future.

引用

页码：243 / 252

页数：10

共 56 条

[1] Impact of anthropogenic climate change on wildfire across western US forests [J].