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OW Auken (2009)
Causes and consequences of woody plant encroachment into western North American grasslandsJ Env Manag, 90
N Picard M Henry (2011)
Estimating tree biomass of sub-Saharan African forests: a review of available allometric equationsSilv Fenn, 459
JB Kauffman CM Litton (2008)
Allometric models for predicting above-ground biome two widespread woody plants in HawaiiBiotropica, 40
forestry and other land use citation_title=Agriculture, Prepared by the National Greenhouse Gas Inventories Programme citation_inbook_title=IPCC Guidelines for National Greenhouse Gas Inventories, citation_publication_date= (2006)
Agriculture, forestry and other land use
JJ Ewel TG Cole (2006)
Allometric equations for four valuable tropical tree speciesFor Ecol Manag, 229
Coppock DL (1994)
The Borana plateau of southern Ethiopia: synthesis of pastoral research development and changes, 1980–91
WJ Bond BJ Wigley (2010)
Thicket expansion in a South African savanna under divergent land use: local versus global drivers?Glob Chang Biol, 16
SF Zitzer BK Northup (2005)
Aboveground biomass and carbon and nitrogen content of woody species in a subtropicala thorn scrub parklandJ Arid Env, 62
Oba G (1998)
Assessment of indigenous range management knowledge of the Borana pastoralists of southern Ethiopia
BA Harvie OE Kgosikoma (2012)
Bush encroachment in relation to rangeland management systems and environmental conditions in Kalahari ecosystem of BotswanaAfr J Agric Res, 7
JR Arvalo JR Abola (2005)
Allometric relationships of different tree species and stand above-ground biomass in the Gomera laurel forest (Canary Islands)Flora, 200
Gowsalya L AmrithaS SM Sundarapandian (2013)
Estimation of biomass and carbon stock of woody plants in different land-usesFor Res, 3
A Markemann B Megersa (2014)
Impacts of climate change and variability on cattle production in southern Ethiopia: perceptions and empirical evidencesAgri Syst, 130
Boutton TW Archer S (2004)
Carbon and nitrogen accumulation in a savanna landscape: field and modeling perspectives
Kuyah Dietz. J (2011)
Allometric equation from distrucitve samping
JJ Swenson M González-Roglich (2014)
Shifting carbon pools along a plant cover gradient in woody encroached savannas of central ArgentinaFor Ecol Manag, 331
BL Maass D Dalle (2005)
Plant communities and their species diversity in the semi arid rangelands of Borana lowlands, southern OromiaEthiop J Commun Ecol, 6
AG Mugasha SAO Chamshama (2004)
Stand biomass and volume estimation for miombo woodlands at Kitulangalo, Morogoro, TanzaniaSouth Afr For J, 200
J Dietz S Kuyah (2012)
Allometric equations for estimating biomass in agricultural landscapes:i above-ground biomassAgric Ecosyst Env, 158
A Duque E Alvarez (2012)
Tree above-ground biomass allometries for carbon stocks estimation in the natural forests of ColombiaForest Ecol Manag, 267
HA Snyman TB Solomon (2007)
Assessment of woody vegetation structure in relation to land use and distance from water in semi-arid Borana rangelandsJ Env Manag, 85
M Kanninen M Segura (2005)
Allometric models for tree volume and total aboveground biomass in a tropical humid forest in Costa RicaBiotropica, 37
A Mataji AA Vahedi (2014)
Allometric equations for predicting aboveground biomass of beech-hornbeam stands in the Hyrcanian forests of IranJ For Sci, 60
D Nepstad A Agrawal (2011)
Reducing emissions from deforestation and forest degradationAnnu Rev Env Resour, 36
E Post G Oba (2000)
Bush cover and range condition assessments in relation to landscape and grazing in southern EthiopiaLandsc Ecol, 15
DG Kotile G Oba (2001)
Assessments of landscape level degradation in southern Ethiopia: pastoralists versus ecologistsLand Degrad Dev, 12
L Tincani BWT Coetzee (2008)
Overgrazing and bush encroachment by Tarchonanthus camphoratus in a semi-arid savannaAfr J Ecol, 46
DJ Edridge KSC Howard (2012)
Positive effects of shrubs on plant species diversity do not change along a gradient in grazing pressure arid shrublandBasic Appl Ecol, 13
R Ceulemans CW Xiao (2004)
Allometric relationships for below- and aboveground biomass of young Scots pineFor Ecol Manag, 203
RA David (2002)
Model selection and multimodel inference a practical information-theoretic approach
A Gillespie S Brown (1989)
Biomass estimation methods for tropical forests with applications to forest inventory dataFor Sci, 35
JS Lee TM Yen (2011)
Comparing aboveground carbon sequestration between moso bamboo (Phyllostachys heterocycla) and China fir (Cunningham lanceolata) forests based on the allometric modelFor Ecol Manag, 261
G Oba A Angassa (2008)
Effects of management and time on mechanisms of bush encroachment in southern EthiopiaAfr J Ecol, 46
M Réjou-Méchain J Chave (2014)
Improved pantropical allometric models to estimate the above ground biomass of tropical forestsGlob Chang Biol, 20
CM Litton J Mascaro (2011)
Minimizing bias in biomass allometry: model selection and log-transformation of dataBiotropica, 43
SM Howden RM Gifford (2001)
Vegetation thickening in an ecological perspective: significance to national greenhouse gas inventories and mitigation policiesEnv Sci Policy, 4
AC Treydte M Hasen-Yusuf (2013)
Predicting above-ground biomass of woody encroacher species in semi-arid RangelandsEthiop J Arid Env, 96
JM Briggs AK Knapp (2008)
Shrub encroachment in North American grasslands: shifts in growth form dominance rapidly alters control of ecosystem carbon inputsGlob Chang Biol, 14
G Oba A Angassa (2007)
Relating long-term rainfall variability to cattle population dynamics in communal rangelands and a government ranch in southern EthiopiaAgric Sys, 94
S Brown HK Gibbs (2007)
Monitoring and estimating tropical forest carbon stocks: making REDD a realityEnv Res Lett, 2
KI Predick SR Archer (2014)
An ecosystem services perspective on brush management: research priorities for competing land-use objectivesJ Ecol, 102
MA Zare Chahouki (2011)
Principles of Statistics for the Natural Resources Science
GW Sileshi S Kuyah (2016)
Allometric Models Based on Bayesian Frameworks Give Better Estimates of Aboveground Biomass in the Miombo WoodlandsForests, 7
TG O’Connor KG Roques (2001)
Dynamics of shrub encroachment in an African savanna: relative influences of fire, herbivory, rainfall and density dependenceJ Appl Ecol, 38
T Tietema (1993)
Biomass determination of fuelwood trees and Bushes of BotswanaS Afr For Ecol Manag, 60
S Jayakumar KT Vashum (2012)
Methods to estimate above-ground biomass and carbon stock in natural forests – a reviewJ Ecosyst Ecogr
G Oba A Angassa (2010)
Effects of grazing pressure, age of enclosures and seasonality on bush cover dynamics and vegetation composition in southern EthiopiaJ Arid Env, 74
BL Maass G Dalle (2006)
Encroachment of woody plants its impact on pastoral livestock production in the Borana lowlands, southern OromiaEthiop Afr J Ecol, 44
P Savadogo L Sawadogo (2010)
Allométrique prediction of above -ground biomass of eleven woody tree species in the Sudanian savanna-woodland of West AfricaJ For Res, 21
CM D’Antonio M Brooks (2004)
Effects of invasive alien plants on fire regimesBioscience, 54
HJL Witte JPM Overman (1994)
Evaluation of regression models for above ground biomass determination in Amazon rainforestJ Trop Ecol, 10
SAS (2012)
SAS Institute Inc
TG O’connor BD Okello (2001)
Growth, biomass estimates, and charcoal production of Acacia drepanolobium in LaikipiaKenya For Ecol Manag, 142
W Dorigo J Oldeland (2010)
Mapping bush encroaching species by seasonal differences in hyperspectral imageryRemote Sens
N Gonzalez J N’avar (2004)
Biomass equations for shrub species of Tamaulipan thornscrub of North-eastern MexicoJ Arid Env, 59
LG Reichmann HL Throop (2012)
Response of dominant grass and shrub species to water manipulation: an eco-physiological basis for shrub invasion in a Chihuahuan Desert GrasslandOecologia, 169
C Andalo J Chave (2005)
Tree allometry and improved estimation carbon stocks and balance in tropical forestsOecologia, 145
DQ Skinner SM Thorne (2002)
Evaluation of a technique for measuring canopy volume of shrubsJ Range Manag, 55
SR Archer RF Hughes (2006)
Changes in aboveground primary production and carbon and nitrogen pools accompanying woody plant encroachment in a temperate savannaGlob Chang Biol, 12
S Archer GP Asner (2003)
Net changes in regional woody vegetation cover and carbon storage in Texas drylands, 1937-1999Glob Chang Biol, 9
Abstract We developed species specific equations to predict aboveground biomass (AGB) of ten woody species in Borana rangelands of southern Ethiopia. A total of 150 plants 15 for each species were measured for biometric variables including the diameter at stump height (DSH), diameter at breast height (DBH), tree height (TH) and crown diameters were destructively harvested to obtain dry biomass. Many equations that related three biomass components: total aboveground, stem and branches to single or combination of predicator variables: DSH, DBH, TH, crown area (CA) and crown volume (CV) fit the data well to predict total AGB and by components for each of the species (adj.R2 > 0.80; P < 0.0001), but the form and variables comprising the best model varied among species. The total AGB of specifics (A. seyal, A. drepanolobium and A. etbaica and Lannea rivae) was significantly predicted from a combination of DSH, and CV and that of A.bussei species by the combination of DBH and CV, with a high adjusted coefficient of determination (adj.R2 > 0.80; P < 0.0001), whereas the combination of DBH and TH best predicted the total AGB and component biomass (stem and branch) of A. tortilis (umbrella canopy shape), with adj.R2 > 0.93; P < 0.0001. A generalized mixed-species allometric model developed from the pooled data of seven species was most accurately predicted by the combination of three predicators (DSH-TH-CA models), with adj. R2 between 0.84 and 0.90 for all AGB categories. Hence, our species-specific allometric models could be adopted for the indirect biomass estimation in semi-arid savanna ecosystem of southern Ethiopia. The mixed species allometric models will give a good opportunity when species-specific equations are not available and contribute to estimate the biomass and carbon stock in woody vegetations of East African rangelands.
Agroforestry Systems – Springer Journals
Published: Jun 1, 2018
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