Arid
DOI10.1016/j.agee.2012.03.013
Reforesting degraded agricultural landscapes with Eucalypts: Effects on carbon storage and soil fertility after 26 years
Harper, R. J.1,2; Okom, A. E. A.2; Stilwell, A. T.2; Tibbett, M.3,4; Dean, C.5; George, S. J.3; Sochacki, S. J.1; Mitchell, C. D.1; Mann, S. S.1,6; Dods, K.6
通讯作者Harper, R. J.
来源期刊AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN0167-8809
出版年2012
卷号163页码:3-13
英文摘要

In the Western Australian wheatbelt, the restoration of native eucalypt forests for managing degraded agricultural landscapes is a critical part of managing dryland salinity and rebuilding biodiversity. Such reforestation will also sequester carbon. Whereas most investigative emphasis has been on carbon stored in biomass, the effects of reforestation on soil organic carbon (SOC) stores and fertility are not known. Two 26 year old reforestation experiments with four Eucalyptus species (E. cladocalyx var nana, E. occidentalis, E. sargentii and E. wandoo) were compared with agricultural sites (Field). SOC stores (to 0.3 m depth) ranged between 33 and 55 Mg ha(-1), with no statistically significant differences between tree species and adjacent farmland. Farming comprised crop and pasture rotations. In contrast, the reforested plots contained additional carbon in the tree biomass (23-60 Mg ha(-1)) and litter (19-34 Mg ha(-1)), with the greatest litter accumulation associated with E. sargentii. Litter represented between 29 and 56% of the biomass carbon and the protection or utilization of this litter in fire-prone, semi-arid farmland will be an important component of carbon management. Exch-Na and Exch-Mg accumulated under E. sargentii and E. occidentalis at one site. The results raise questions about the conclusions of SOC sequestration studies following reforestation based on limited sampling and reiterate the importance of considering litter in reforestation carbon accounts. (C) 2012 Elsevier B.V. All rights reserved.


英文关键词Carbon sequestration Biodiversity restoration Watershed management
类型Article
语种英语
国家Australia ; England
收录类别SCI-E
WOS记录号WOS:000313390200002
WOS关键词VENTILATED-CHAMBER TECHNIQUE ; SOUTH-WESTERN AUSTRALIA ; WOODY PLANT INVASION ; MM RAINFALL REGION ; LITTER DECOMPOSITION ; EASTERN AUSTRALIA ; TREE PLANTATION ; ORGANIC-MATTER ; FOREST ; SALINITY
WOS类目Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向Agriculture ; Environmental Sciences & Ecology
来源机构University of Western Australia
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/171087
作者单位1.Murdoch Univ, Sch Environm Sci, Alcoa Chair Sustainable Water Management, Murdoch, WA 6150, Australia;
2.Forest Prod Commiss, Perth, WA 6849, Australia;
3.Univ Western Australia, Sch Earth & Environm, Crawley, WA 6009, Australia;
4.Cranfield Univ, Natl Soil Resources Inst, Dept Environm Sci & Technol, Sch Appl Sci, Cranfield MK43 0AL, Beds, England;
5.Univ Tasmania, Sch Geog & Environm Studies, Hobart, Tas 7001, Australia;
6.ChemCentre, Bentley, WA 6983, Australia
推荐引用方式
GB/T 7714
Harper, R. J.,Okom, A. E. A.,Stilwell, A. T.,et al. Reforesting degraded agricultural landscapes with Eucalypts: Effects on carbon storage and soil fertility after 26 years[J]. University of Western Australia,2012,163:3-13.
APA Harper, R. J..,Okom, A. E. A..,Stilwell, A. T..,Tibbett, M..,Dean, C..,...&Dods, K..(2012).Reforesting degraded agricultural landscapes with Eucalypts: Effects on carbon storage and soil fertility after 26 years.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,163,3-13.
MLA Harper, R. J.,et al."Reforesting degraded agricultural landscapes with Eucalypts: Effects on carbon storage and soil fertility after 26 years".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 163(2012):3-13.
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