Soil carbon and nitrogen in relation to shrub size and death in a semi-arid grassland

McClaran, Mitchel P.; Moore‐Kucera, Jennifer; Martens, Dean A.; Haren, Joost van; Marsh, Stuart E.

doi:10.1016/j.geoderma.2008.02.006

Cited by 77 publications

(66 citation statements)

References 34 publications

(60 reference statements)

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“…This implied a comparative high effectiveness of grass cover on SOC sequestration at early stages of cropland abandonment for natural vegetation restoration (Kucharik et al, 2001). However, the effects of SOC sequestration under well structured shrub and forest communities can exceed those under grass covers (De Kovel et al, 2000;Goberna et al, 2006;McClaran et al, 2008).…”

Section: Soc Sequestration Potentials As Affected By Vegetation Restomentioning

confidence: 99%

Effects of vegetation restoration on soil organic carbon sequestration at multiple scales in semi-arid Loess Plateau, China

Wang

Lü

et al. 2011

CATENA

189

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Section: Soc Sequestration Potentials As Affected By Vegetation Restomentioning

confidence: 99%

Effects of vegetation restoration on soil organic carbon sequestration at multiple scales in semi-arid Loess Plateau, China

Wang

Lü

et al. 2011

CATENA

189

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“…Actually, the knowledge of shrub communities' effects on carbon stocks is still scarce around the world. However, shrub vegetation may require much closer attention if set-aside (meaning conversion of agricultural land use to native vegetation) is included as a carbon sink under the international policy core acts (Coomes et al 2002;MacClaran et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Carbon storage in the Mediterranean upland shrub communities of Montesinho Natural Park, northeast of Portugal

2012

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Carbon storage is one of the several important functions of shrub communities in terrestrial ecosystems and could represent an effective way to mitigate climate change. Accordingly, biomass carbon (above and belowground), litter carbon, and soil organic carbon (SOC) were studied in three shrub species: Cistus ladanifer (C. ladanifer), Cytisus multiflorus (C. multiflorus), and Erica australis spp. Aragonensis (E. australis)-representing dominant shrub communities found in Montesinho Natural Park (PNM), NE Portugal. The experimental design envisaged testing the effects of species and topography on variables mentioned and procedures carried out included assessments in areas covered by the three communities mentioned, in different topographic conditions (gentle slope, about 5 %; moderate, around 15 %; steep, around 25 %), with three replicates. Above and belowground biomass and litter were collected in 1 m2 plots, where soil samples at depths of 0-5, 5-10, and 10-20 cm were taken (disturbed for C mass concentration, undisturbed for bulk density determinations). The aboveground biomass was separated in stems, branches, branchlets, leaves, and fruits. Carbon mass concentrations determined in biomass, litter, and soil were converted to kg C m -2 ground area. Results showed that: (1) under the conditions studied, over 80 % of carbon is stored in the soil; (2) the contribution of biomass is higher in E. australis, representing about 20 % of carbon storage in the system; (3) for total carbon storage in the whole system, species followed the pattern E. australis (12.8 kg C m ); (4) effects of topographic conditions were not significant in the global C storage, with 10.6, 11.6, and 11.7 kg C m -2 in gentle slope, moderate, and steep, respectively.

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“…When increases in SOC do occur, these are often observed in the upper soil profile (0-20 cm, Boutton, Liao, Filley, & Archer, 2009) with accumulation rates ranging from 80 to 300 kg C ha -1 yr -1 (Wheeler, Archer, Asner, & McMurtry, 2007), and associated increases in soil N occur (Wheeler et al, 2007). Conversely, complete removal of individual shrubs that have encroached in hot desert rangelands can substantially (67-106%) reduce SOC and N in upper (0-10 cm) soil depths (McClaran, Moore-Kucera, Martens, Haren, & Marsh, 2008). This loss of SOC and N occurs over a period of about 10-15 years .…”

Section: Discussionmentioning

confidence: 99%

Plant and Soil Consequences of Shrub Management in a Big Sagebrush-Dominated Rangeland Ecosystem

Derner¹,

Schuman²,

Follett³

et al. 2013

ENRR

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This study investigated plant and soil (organic carbon, SOC) responses to shrub management in western U.S. rangeland dominated by Wyoming big sagebrush (Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young). Plants and soils were sampled in 2009 from paired sets of treatments (mowing to 10 cm height, aerial herbicide application of Spike® 20P [tebuthiuron]) in Sandy and Loamy ecological sites. Plant responses to mowing were consistent for both ecological sites with 1) no effects on live, but three-to four-fold increases in dead, Wyoming big sagebrush plant density, 2) reduced height and cover of Wyoming big sagebrush, 3) increased cover of perennial grasses, and 4) no effects on bare ground. For soils, increased SOC did occur with herbicide application in the Loamy site for both the 0-5 cm (43% increase) and 5-15 cm (17% increase) soil depths, which corresponded to annual soil C sequestration rates of 0.16 and 0.14 Mg C ha -1 yr -1 for the 0-5 and 5-15 cm soil depths, respectively. Shrub management in Wyoming big sagebrush-dominated rangelands affects the plant component for two different ecological sites, whereas effects on SOC were observed only when density of live Wyoming big sagebrush plants was reduced through selective herbicide use.

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Soil carbon and nitrogen in relation to shrub size and death in a semi-arid grassland

Cited by 77 publications

References 34 publications

Effects of vegetation restoration on soil organic carbon sequestration at multiple scales in semi-arid Loess Plateau, China

Effects of vegetation restoration on soil organic carbon sequestration at multiple scales in semi-arid Loess Plateau, China

Carbon storage in the Mediterranean upland shrub communities of Montesinho Natural Park, northeast of Portugal

Plant and Soil Consequences of Shrub Management in a Big Sagebrush-Dominated Rangeland Ecosystem

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