globalchange  > 气候变化事实与影响
DOI: 10.1016/j.jenvman.2018.12.050
WOS记录号: WOS:000459525100038
论文题名:
Impact of post-fire management on soil respiration, carbon and nitrogen content in a managed hemiboreal forest
作者: Parro, Kristi1; Koster, Kajar2; Jogiste, Kalev1; Seglins, Katrin3; Sims, Allan4; Stanturf, John A.1,5; Metslaid, Marek1,6
通讯作者: Metslaid, Marek
刊名: JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN: 0301-4797
EISSN: 1095-8630
出版年: 2019
卷: 233, 页码:371-377
语种: 英语
英文关键词: Soil organic matter ; Carbon cycling ; Salvage logging
WOS关键词: ORGANIC-MATTER ; CLIMATE-CHANGE ; JACK PINE ; CLEAR-CUT ; FIRE ; DISTURBANCES ; VEGETATION ; WILDFIRE ; BIOMASS ; TIME
WOS学科分类: Environmental Sciences
WOS研究方向: Environmental Sciences & Ecology
英文摘要:

Boreal forests are an important carbon (C) sink and fire is the main natural disturbance, directly affecting the C-cycle via emissions from combustion of biomass and organic matter and indirectly through long-term changes in C-dynamics including soil respiration. Carbon dioxide (CO2) emission from soil (soil respiration) is one of the largest fluxes in the global C-cycle. Recovery of vegetation, organic matter and soil respiration may be influenced by the intensity of post-fire management such as salvage logging. To study the impact of forest fire, fire and salvage, and recovery time on soil respiration and soil C and N content, we sampled two permanent research areas in north-western Estonia that were damaged by fire: Vihterpalu (59 degrees 13' N 23 degrees 49' E) in 1992 and Nova (59 degrees 10' N 23 degrees 45' E) in 2008. Three types of sample plots were established: 1) unburned control with no harvesting (CO); 2) burned and uncleared (BU); and 3) burned and cleared (BC). Measurements were made in 2013, 21 years after wildfire in Vihterpalu and 5 years after wildfire in NOva. Soil respiration ranged from 0.00 to 1.38 g CO2 m(-2) h(-1). Soil respiration in the burned and cleared areas (BC) was not reduced compared to burned and uncleared (BU) areas but the average soil respiration in unburned control areas was more than twice the value in burned areas (average soil respiration in CO areas was 0.34 CO2 m(-2) h(-1), versus 0.16 CO2 m(-2) h(-1), the average soil respiration of BC and BU combined). Recovery over 20 years was mixed; respiration was insignificantly lower on younger than older burned sites (when BC and BU values were combined, the average values were 0.15 vs. 0.17 g CO2 m(-2) h(-1), respectively); soil-C was greater in the older burned plots than the younger (when BC and BU values were combined, the average values were 9.71 vs. 5.99 kg m(-2), respectively); but root biomass in older and recently burned areas was essentially the same (average 2.23 and 2.11 kg m(-2), respectively); soil-N was highest on burned areas 20 years after fire. Twenty years post-fire may be insufficient time for carbon dynamics to fully recover on these low productivity sandy sites.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/130542
Appears in Collections:气候变化事实与影响

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作者单位: 1.Estonian Univ Life Sci, Inst Forestry & Rural Engn, Kreutzwaldi 5, EE-51006 Tartu, Estonia
2.Univ Helsinki, Inst Atmospher & Earth Syst Res Forest Sci, Fac Agr & Forestry, Latokartanonkaari 7, Helsinki, Finland
3.Luua Forestry Sch, EE-49203 Luua, Jogeva Parish, Estonia
4.Environm Agcy, Roomu Tee 2, EE-50705 Tartu, Estonia
5.US Forest Serv, Ctr Forest Disturbance Sci, 320 Green St, Athens, GA 30602 USA
6.Norwegian Inst Bioecon Res, POB 115, N-1431 AS, Norway

Recommended Citation:
Parro, Kristi,Koster, Kajar,Jogiste, Kalev,et al. Impact of post-fire management on soil respiration, carbon and nitrogen content in a managed hemiboreal forest[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2019-01-01,233:371-377
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