GSTDTAP  > 气候变化
DOI10.1016/j.foreco.2018.02.050
Soil organic carbon stocks in three Canadian agroforestry systems: From surface organic to deeper mineral soils
Lim, Sang-Sun1,2; Baah-Acheamfour, Mark1; Choi, Woo-Jung2; Arshad, Muhammad A.1; Fatemi, Farrah3; Banerjee, Samiran4; Carlyle, Cameron N.5; Bork, Edward W.5; Park, Hyun-Jin2; Chang, Scott X.1
2018-05-15
发表期刊FOREST ECOLOGY AND MANAGEMENT
ISSN0378-1127
EISSN1872-7042
出版年2018
卷号417页码:103-109
文章类型Article
语种英语
国家Canada; South Korea; USA; Switzerland
英文摘要

Our understanding of the effect of agroforestry systems on soil organic carbon (SOC) is largely limited to the upper layer of the mineral soil, while LFH (litter, partially decomposed litter and humus) and deeper soil layers are poorly studied. In this study, the effects of three different agroforestry systems (hedgerow, shelterbelt, and silvopasture) and their component land-cover types (treed area and adjacent herbland) on SOC stock in LFH and mineral soil layers (0-75 cm) were investigated across 36 sites in central Alberta, Canada. The SOC stock of mineral soil (0-75 cm) was not affected by agroforestry systems but by land-cover type. The treed area had greater (p < 0.001) SOC in the 0-75 cm mineral soil (25.5 kg C m(-2)) than the herbland (19.4 kg C m(-2)), driven by the greater (p < 0.001) SOC level in the top 0-30 cm rather than that in the deeper layers (30-75 cm). Within the treed area, the silvopasture system that was dominated by broad-leaf deciduous trees had 56-70% more SOC in the 0-10 cm soil than in the hedgerow and shelterbelt systems. The SOC stock in the 0-10 cm layer was positively (p = 0.025) related to the C stock of the overlying LFH layer in the silvopasture system. These results together with the 22-24% higher dissolved organic carbon (DOC) concentration in the silvopasture than in the other systems suggest that the greater SOC stock in the 0-10 cm mineral soil could be attributed to the higher rates of translocation of DOC from the LFH in the silvopasture than that in shelterbelt or hedgerow. We conclude that SOC stock in the top mineral soil (e.g., 0-30 cm) is more responsive to changes in land-cover type and the LFH layer plays an important role in increasing SOC stock in the surface mineral soil of the agroforestry systems in central Alberta.


英文关键词Carbon sequestration Hedgerow Shelterbelt Silvopasture Tree species
领域气候变化
收录类别SCI-E
WOS记录号WOS:000430778900009
WOS关键词SILVOPASTORAL SYSTEMS ; BRITISH-COLUMBIA ; LAND-USE ; STORAGE ; SEQUESTRATION ; LITTER ; FOREST ; TREES ; DECOMPOSITION ; PASTURE
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/23122
专题气候变化
作者单位1.Univ Alberta, Dept Renewable Resources, 442 Earth Sci Bldg, Edmonton, AB T6G 2E3, Canada;
2.Chonnam Natl Univ, Dept Rural & Biosyst Engn, Gwangju 61186, South Korea;
3.St Michaels Coll, Environm Studies Program, Colchester, VT 05439 USA;
4.Agroscope, Dept Agroecol & Environm, CH-8046 Zurich, Switzerland;
5.Univ Alberta, Dept Agr Food & Nutr Sci, Agr Forestry Ctr 410, Edmonton, AB T6G 2P5, Canada
推荐引用方式
GB/T 7714
Lim, Sang-Sun,Baah-Acheamfour, Mark,Choi, Woo-Jung,et al. Soil organic carbon stocks in three Canadian agroforestry systems: From surface organic to deeper mineral soils[J]. FOREST ECOLOGY AND MANAGEMENT,2018,417:103-109.
APA Lim, Sang-Sun.,Baah-Acheamfour, Mark.,Choi, Woo-Jung.,Arshad, Muhammad A..,Fatemi, Farrah.,...&Chang, Scott X..(2018).Soil organic carbon stocks in three Canadian agroforestry systems: From surface organic to deeper mineral soils.FOREST ECOLOGY AND MANAGEMENT,417,103-109.
MLA Lim, Sang-Sun,et al."Soil organic carbon stocks in three Canadian agroforestry systems: From surface organic to deeper mineral soils".FOREST ECOLOGY AND MANAGEMENT 417(2018):103-109.
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