Biomass and Structure of a Subtropical Eucalypt Forest, North Stradbroke Island

Westman, WE; Rogers, R. W.

doi:10.1071/bt9770171

Cited by 75 publications

(44 citation statements)

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“…Reports of the amount of above-ground biomass for Pinus plantations in the sub-tropics suggest approximately 316 Mg ha À1 ($155 Mg C ha À1 ) can be sequestered by age 30 (Simpson et al, 2000). Tree C stocks in native vegetation in subtropical Australia may vary greatly from site-to-site but range from approximately 40 to 220 Mg C ha À1 depending on the soil type and site productivity (Westman and Rogers, 1977;Hero et al, 2013;Ngugi et al, 2014;Moroni and Lewis, 2015). We are unaware of any studies that consider the impact of conversion of native vegetation to Pinus sp.…”

Section: Introductionmentioning

confidence: 99%

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Conversion of sub-tropical native vegetation to introduced conifer forest: Impacts on below-ground and above-ground carbon pools

Lewis

Smith

Hogg

et al. 2016

Forest Ecology and Management

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a b s t r a c tLand-use change can have a major influence on soil organic carbon (SOC) and above-ground C pools. We assessed a change from native vegetation to introduced Pinus species plantations on C pools using eight paired sites. At each site we determined the impacts on 0-50 cm below-ground (SOC, charcoal C, organic matter C, particulate organic C, humic organic C, resistant organic C) and above-ground (litter, coarse woody debris, standing trees and woody understorey plants) C pools. In an analysis across the different study sites there was no significant difference (P > 0.05) in SOC or above-ground tree C stocks between paired native vegetation and pine plantations, although significant differences did exist at specific sites. SOC (calculated based on an equivalent soil mass basis) was higher in the pine plantations at two sites, higher in the native vegetation at two sites and did not differ for the other four sites. The site to site variation in SOC across the landscape was far greater than the variation observed with a change from native vegetation to introduced Pinus plantation. Differences between sites were not explained by soil type, although tree basal area was positively correlated with 0-50 cm SOC. In fact, in the native vegetation there was a significant linear relationship between above-ground biomass and SOC that explained 88.8% of the variation in the data. Fine litter C (0-25 mm diameter) tended to be higher in the pine forest than in the adjacent native vegetation and was significantly higher in the pine forest at five of the eight paired sites. Total litter C (0-100 mm diameter) increased significantly with plantation age (R 2 = 0.64).Carbon stored in understorey woody plants (2.5-10 cm DBH) was higher in the native vegetation than in the adjacent pine forest. Total site C varied greatly across the study area from 58.8 Mg ha À1 at a native heathland site to 497.8 Mg ha À1 at a native eucalypt forest site. Our findings suggest that the effects of change from native vegetation to introduced Pinus sp. forest are highly site-specific and may be positive, negative, or have no influence on various C pools, depending on local site characteristics (e.g. plantation age and type of native vegetation). Crown

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Section: Introductionmentioning

confidence: 99%

“…No assessment of biomass was made for grasses, herbs and vines. Biomass of these components is usually <3 Mg ha À1 in the ecosystems studied (Moroni and Lewis, 2015;Westman and Rogers, 1977).…”

mentioning

confidence: 99%

Conversion of sub-tropical native vegetation to introduced conifer forest: Impacts on below-ground and above-ground carbon pools

Lewis

Smith

Hogg

et al. 2016

Forest Ecology and Management

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“…For example, it is essential in assessing forest structure and conditions (Westman & Rogers, 1977); estimating forest productivity and carbon fluxes (Chambers et al, 2001); for sequestration of carbon in wood, leaves, and roots (Specht & West, 2003); for estimating carbon sequestration and for assessing site productivity. All these depend on sequential changes in biomass.…”

Section: Introductionmentioning

confidence: 99%

Biomass Distribution and Development of Allometric Equations for Non-Destructive Estimation of Carbon Sequestration in Grafted Mango Trees

Ganeshamurthy¹,

Ravindra²,

Venugopalan³

et al. 2016

JAS

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The general equations available/developed for forest/wild mango trees based on measurement of diameter at breast height (DBH) (cannot be used) are not applicable for mango orchards which are predominantly established with grafted plants. Hence allometric equations were developed with destructive sampling of grafted mango trees. The selected parameters showed that allometric parameters were significantly related with age of the trees. The proportion of roots (22%) in grafted mangos was found to be higher than those reported for tropical forest trees (18%) with a R ratio of 0.291. The biomass expansion factor (BEF) varied with age. Initially the BEF was very high followed by a decreasing phase and finally a steady phase by and large attained stability beyond 20 years. The equations generally fitted the data well, and in most cases more than 50% of the observed variation in biomass was explained by primary branch girth (PBG) × number of primary branches (NPB). All equations were statistically significant (p < 0.05) for both scaling parameters, a and b. Based on the R 2 values the best fit model for estimation of above ground biomass of grafted mango trees is a power model using PBG × NPB as the best dimension: There was a good agreement between the observed and the predicted biomass using this equation.

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“…In addition, botanical biomass is an important indicator for assessing forest structure (Westman and Rogers 1977). Allometry is an alternative method of estimating plant productivity in situations where the volume of individual plants is very large or regrowth is so slow that extensive damage may be caused by complete harvesting of sample plots (Madgwick and Satoo 1975).…”

Section: Introductionmentioning

confidence: 99%

Aboveground biomass estimation of Quercus glauca in evergreen forest, Kotzawal wetland, Cheju Island, Korea

Jeong¹,

Kim²,

Cho³

et al. 2014

Journal of Wetlands Research

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This study developed allometry equation and estimated the aboveground-biomass of Quercus glauca, a warm-temperature, evergreen broad-leaved tree, growing in Kotzawal wetland located on Jeju Island. The allometric equations between DBH(diameter at breast height) and dry weights of stems (Ws), branches (Wb), leaves (Wl) and aboveground biomass (Wab) of Q. glauca were as follows: logWs=2.4042logDBH-1.3045, logWb=2.6436logDBH-1.6232, logWl =1.5428logDBH-1.3692 and logWab=2.3324logDBH-0.

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Biomass and Structure of a Subtropical Eucalypt Forest, North Stradbroke Island

Cited by 75 publications

References 0 publications

Conversion of sub-tropical native vegetation to introduced conifer forest: Impacts on below-ground and above-ground carbon pools

Conversion of sub-tropical native vegetation to introduced conifer forest: Impacts on below-ground and above-ground carbon pools

Biomass Distribution and Development of Allometric Equations for Non-Destructive Estimation of Carbon Sequestration in Grafted Mango Trees

Aboveground biomass estimation of Quercus glauca in evergreen forest, Kotzawal wetland, Cheju Island, Korea

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