Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.01.014 |
Vertical distribution and persistence of soil organic carbon in fire-adapted longleaf pine forests | |
Butnor, John R.1; Samuelson, Lisa J.2; Johnsen, Kurt H.3; Anderson, Peter H.4; Benecke, Carlos A. Gonzalez5; Boot, Claudia M.6,7; Cotrufo, M. Francesca6; Heckman, Katherine A.8; Jackson, Jason A.9; Stokes, Thomas A.2; Zarnoch, Stanley J.10 | |
2017-04-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 390 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Longleaf pine (Pinus palustris Miller) forests in the southern United States are being restored and actively managed for a variety of goals including: forest products, biodiversity, C sequestration and forest resilience in the face of repeated disturbances from hurricanes and climate change. Managed southern pine forests can be sinks for atmospheric CO2 in forest biomass; however, the persistence of biomass in the environment or in forest products is limited, thus making soil C the primary long-term pool. Little is known about the size of extant soil C pools, residence time of soil C or the role that frequent burning plays in C stabilization in longleaf pine ecosystems. We sampled soil from a chronosequence of longleaf pine stands ranging in age from 5 to 87 years to quantify the vertical distribution of soil organic carbon (SOC) stocks; both oxidizable (SOCox) and oxidation resistant (SOCR) fractions, pyrogenic carbon (PyC) and the mean residence time (MRT) of SOC and its associated fractions. SOC stocks (0-1 m) ranged from 44.1 to 98.1 ((x) over bar = 77.0) Mg C ha(-1), and no effect of stand age or biomass accumulation on SOC stocks was detected. Soil C accumulation was associated with elevated clay and extractable Fe contents. While SOC concentration declined with soil depth, the proportion of SOCR in SOC increased with depth. PyC was a minor component of soil C, representing 5-7% of SOC and the proportion was not depth dependent. The MRT of SOC was hundreds of years near the surface and many thousands of years at depth. Though SOCR was less abundant than SOCox, SOCR MRT was an order of magnitude greater than SOCox MRT and had a strong influence on bulk SOC MRT. The majority of the PyC was in the less persistent SOCox and not associated with long-term C storage in soil. Despite the flow of C from biomass in the form of decay products, litter fall, root turnover and pulses of PyC, these soils preserve little of recent inputs, which may be rapidly oxidized, lost to the atmosphere from periodic fires or, in the case of PyC, may be transported out of the system via erosion. Our results indicate that these soils were not strong sinks for atmospheric CO2, especially when compared to C accumulation in biomass. Published by Elsevier B.V. |
英文关键词 | C stocks Pinus palustris Prescribed fire Pyrogenic C Radiocarbon Soil carbon |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398873700003 |
WOS关键词 | BLACK CARBON ; PYROGENIC CARBON ; ECOSYSTEM CARBON ; TEMPERATE SOILS ; MATTER ; STABILIZATION ; CHARCOAL ; PALUSTRIS ; NITROGEN ; QUANTIFICATION |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/23819 |
专题 | 气候变化 |
作者单位 | 1.Univ Vermont, Southern Res Stn, USDA, US Forest Serv,Aiken Ctr, 81 Carrigan Dr, Burlington, VT 05405 USA; 2.Auburn Univ, Sch Forestry & Wildlife Sci, 3301 SFWS Bldg, Auburn, AL 36849 USA; 3.US Forest Serv, USDA, Southern Res Stn, 1577 Brevard Rd, Asheville, NC 28806 USA; 4.US Forest Serv, USDA, Southern Res Stn, 3041 East Cornwallis Rd, Res Triangle Pk, NC 27709 USA; 5.Oregon State Univ, Coll Forestry, Dept Forest Engn Resources & Management, 280 Peavy Hall, Corvallis, OR 97331 USA; 6.Colorado State Univ, Dept 1499, Nat Resource Ecol Lab, Ft Collins, CO 80523 USA; 7.Colorado State Univ, Dept Chem, Cent Instrument Facil, 1872 Campus Delivery,200 W Lake, Ft Collins, CO 80523 USA; 8.US Forest Serv, USDA, Forestry Sci Lab, Northern Res Stn, 410 MacInnes Dr, Houghton, MI 49931 USA; 9.Vance Granville Community Coll, 200 Community Coll Rd, Henderson, NC 27537 USA; 10.US Forest Serv, USDA, Southern Res Stn, Clemson, SC 29639 USA |
推荐引用方式 GB/T 7714 | Butnor, John R.,Samuelson, Lisa J.,Johnsen, Kurt H.,et al. Vertical distribution and persistence of soil organic carbon in fire-adapted longleaf pine forests[J]. FOREST ECOLOGY AND MANAGEMENT,2017,390. |
APA | Butnor, John R..,Samuelson, Lisa J..,Johnsen, Kurt H..,Anderson, Peter H..,Benecke, Carlos A. Gonzalez.,...&Zarnoch, Stanley J..(2017).Vertical distribution and persistence of soil organic carbon in fire-adapted longleaf pine forests.FOREST ECOLOGY AND MANAGEMENT,390. |
MLA | Butnor, John R.,et al."Vertical distribution and persistence of soil organic carbon in fire-adapted longleaf pine forests".FOREST ECOLOGY AND MANAGEMENT 390(2017). |
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