globalchange  > 全球变化的国际研究计划
DOI: 10.2136/sssaj2018.07.0283
WOS记录号: WOS:000484543700007
论文题名:
Empirical and Predicted Boreal Forest Carbon Pools Following Stem-Only Harvesting in Quebec, Canada
作者: Sage, Larissa K.1; Smith, C. Tattersall1; Kurz, Werner2; Thiffault, Evelyne3; Pare, David4; Bernier, Pierre4
通讯作者: Smith, C. Tattersall
刊名: SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
ISSN: 0361-5995
EISSN: 1435-0661
出版年: 2019
卷: 83, 页码:S59-S81
语种: 英语
WOS关键词: NATURAL-DISTURBANCE ORIGIN ; SPRUCE BUDWORM OUTBREAKS ; SOIL CARBON ; CLIMATE-CHANGE ; RED SPRUCE ; DYNAMICS ; STOCKS ; IMPACTS ; WOOD ; MODEL
WOS学科分类: Soil Science
WOS研究方向: Agriculture
英文摘要:

Climate change and global wood products demand raise concerns about boreal forest ecosystem resilience to natural disturbances and harvesting. A chronosequence experiment located in Foret Montmorency, Quebec was used to evaluate the effects of harvesting on carbon (C) recovery trajectories at the stand level over a period of 77 years in balsam fir-white birch stands. Empirical estimates of 19 Foret Montmorency forest carbon pools were compared with those simulated by the Carbon Budget Model (CBM-CFS3) to test model assumptions for predicting carbon dynamics in this forest. The model was initialized using forest inventory data, spatially explicit environmental conditions, and disturbance matrices designed to represent historical spruce budworm epidemics in Foret Montmorency. Over the chronosequence, total ecosystem C increased significantly (p = 0.05) following harvest from 211 Mg in year-zero to 279 +/- 8 Mg C ha(-1) in year 67 (mean +/- SE), suggesting that FM carbon pools were recovering to pre-harvest levels after seven decades. The CBM-CFS3 model predicted total ecosystem C stocks within 10% of the empirical mean at stand maturity; however, several predicted C pools deviated from field observations in both C amounts and trends over time. The greatest differences were in deadwood and soil C pools, suggesting that model initialization of dead organic matter pools did not adequately simulate the 1000-yr history of C-pool transfers and stand dynamics leading up to the harvest. Modifications to CBM-CFS3 initialization assumptions and default decay parameters may more accurately simulate long-term effects of natural disturbances on C pools for this forest region.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/144104
Appears in Collections:全球变化的国际研究计划

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作者单位: 1.Univ Toronto, Dep Geog & Planning, Toronto, ON M5S 3G3, Canada
2.Nat Resources Canada, Pacific Forestry Ctr, Victoria, BC V8Z 1M5, Canada
3.Univ Laval, Dep Wood & Forest Sci, Res Ctr Renewable Mat, Quebec City, PQ G1V 0A6, Canada
4.Nat Resources Canada, Laurentian Forestry Ctr, Quebec City, PQ G1V 4C7, Canada

Recommended Citation:
Sage, Larissa K.,Smith, C. Tattersall,Kurz, Werner,et al. Empirical and Predicted Boreal Forest Carbon Pools Following Stem-Only Harvesting in Quebec, Canada[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2019-01-01,83:S59-S81
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