Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.agee.2013.02.001 |
Managing semi-arid woodlands for carbon storage: Grazing and shrub effects on above- and belowground carbon | |
Daryanto, Stefani1; Eldridge, David J.2; Throop, Heather L.3 | |
通讯作者 | Eldridge, David J. |
来源期刊 | AGRICULTURE ECOSYSTEMS & ENVIRONMENT |
ISSN | 0167-8809 |
EISSN | 1873-2305 |
出版年 | 2013 |
卷号 | 169页码:1-11 |
英文摘要 | Shrub cover has increased in semi-arid regions worldwide. This change has generally been viewed as land degradation, due to shrub-induced declines in pastoral productivity. As a consequence, widespread management treatments to reduce shrub density have been applied in many pastoral areas. These treatments, however, often do not have long-term positive benefits for forage production. Alternative uses for shrub-encroached lands have received little consideration, but a recent move towards economic incentives for carbon (C) storage could lead to financially viable alternative land management strategies. We examined changes in above- and belowground C storage following 20 years of factorial land management treatments (grazing/no grazing and shrub removal/no removal) in an Australian semi-arid woodland. Disturbance by shrub removal (root ploughing) and/or livestock grazing significantly reduced the amount of soil organic carbon (SOC). The most disturbed treatment (grazed and ploughed) contained the least SOC (15.30 Mg C ha(-1)) while protection from grazing and shrub removal led to the greatest SOC (28.49 Mg C ha(-1)). Declines in SOC in shrub removal treatments (with and without grazing) were compensated, in part, by enhanced aboveground C accumulation, derived mainly from woody plants. Destocking currently grazed shrublands for two decades resulted in a net C accretion, over 20 years, in the order of 6.5 Mg ha(-1), almost entirely through increasing belowground C. At the current price for C in Australia, the economic benefit for C accumulation from removing livestock grazing would be similar to the economic benefit of grazing. The results suggest that C farming in this semi-arid woodland system may offer an economically viable alternative management strategy to grazing, although uncertainties in future climate, C credit value, and assessment protocols present hurdles for implementing alternative management aimed at C farming. (c) 2013 Elsevier B.V. All rights reserved. |
英文关键词 | Carbon farming Carbon sequestration Dryland Grazing Shrub removal Shrubland |
类型 | Article |
语种 | 英语 |
国家 | Australia ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000318392700001 |
WOS关键词 | WOODY PLANT ENCROACHMENT ; EASTERN AUSTRALIA ; ECOSYSTEM ; NITROGEN ; IMPACTS ; DESERT ; VEGETATION ; MANAGEMENT ; WATER ; DESERTIFICATION |
WOS类目 | Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences |
WOS研究方向 | Agriculture ; Environmental Sciences & Ecology |
来源机构 | New Mexico State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/175607 |
作者单位 | 1.Univ New S Wales, Sch Biol Earth & Environm Sci, Evolut & Ecol Res Ctr, Sydney, NSW 2052, Australia; 2.Univ New S Wales, Sch Biol Earth & Environm Sci, C Australian Wetlands Rivers & Landscapes Ctr, Off Environm & Heritage, Sydney, NSW 2052, Australia; 3.New Mexico State Univ, Dept Biol, Las Cruces, NM 88003 USA |
推荐引用方式 GB/T 7714 | Daryanto, Stefani,Eldridge, David J.,Throop, Heather L.. Managing semi-arid woodlands for carbon storage: Grazing and shrub effects on above- and belowground carbon[J]. New Mexico State University,2013,169:1-11. |
APA | Daryanto, Stefani,Eldridge, David J.,&Throop, Heather L..(2013).Managing semi-arid woodlands for carbon storage: Grazing and shrub effects on above- and belowground carbon.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,169,1-11. |
MLA | Daryanto, Stefani,et al."Managing semi-arid woodlands for carbon storage: Grazing and shrub effects on above- and belowground carbon".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 169(2013):1-11. |
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