Relationships Between Plant Surface Area and Respiration in Loblolly Pine

Kinerson, Russell S.

doi:10.2307/2402102

Cited by 67 publications

(36 citation statements)

References 3 publications

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“…This value is close to the value found by (Kinerson 1975). Kinerson's analysis indicates an increase in the respiration during the growing season.…”

Section: Estimation Of Annual Carbon Dioxide Exchange From Climatologsupporting

confidence: 91%

Carbon dioxide exchange and growth of a pine plantation

Murphy

1985

Forest Ecology and Management

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“…This value is close to the value found by (Kinerson 1975). Kinerson's analysis indicates an increase in the respiration during the growing season.…”

Section: Estimation Of Annual Carbon Dioxide Exchange From Climatologsupporting

confidence: 91%

Carbon dioxide exchange and growth of a pine plantation

Murphy

1985

Forest Ecology and Management

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“…An alternative method for scaling chamber flux measurements to whole trees is to estimate the stem surface area for the entire tree (Kinerson 1975), and then scale fluxes similar to using leaf area index (LAI) for scaling leaf respiration (e.g., Law et al 1999). Although this method provides little insight into differences in R w among individuals, it may be a more accurate method of scaling R w to the ecosystem because estimating total surface area is more straightforward than estimating total sapwood volume, especially in a species-rich tropical forest.…”

Section: Scaling Stem Respirationmentioning

confidence: 99%

Respiration From a Tropical Forest Ecosystem: Partitioning of Sources and Low Carbon Use Efficiency

Chambers

Tribuzy

Toledo

et al. 2004

Ecological Applications

393

352

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Abstract. Understanding how tropical forest carbon balance will respond to global change requires knowledge of individual heterotrophic and autotrophic respiratory sources, together with factors that control respiratory variability. We measured leaf, live wood, and soil respiration, along with additional environmental factors over a 1-yr period in a Central Amazon terra firme forest. Scaling these fluxes to the ecosystem, and combining our data with results from other studies, we estimated an average total ecosystem respiration (R eco ) of 7.8 mol·m Ϫ2 ·s Ϫ1. Average estimates (per unit ground area) for leaf, wood, soil, total heterotrophic, and total autotrophic respiration were 2.6, 1.1, 3.2, 5.6, and 2.2 mol·m Ϫ2 ·s Ϫ1 , respectively. Comparing autotrophic respiration with net primary production (NPP) estimates indicated that only ϳ30% of carbon assimilated in photosynthesis was used to construct new tissues, with the remaining 70% being respired back to the atmosphere as autotrophic respiration. This low ecosystem carbon use efficiency (CUE) differs considerably from the relatively constant CUE of ϳ0.5 found for temperate forests. Our R eco estimate was comparable to the above-canopy flux (F ac ) from eddy covariance during defined sustained high turbulence conditions (when presumably F ac ϭ R eco ) of 8.4 (95% CI ϭ 7.5-9.4). Multiple regression analysis demonstrated that ϳ50% of the nighttime variability in F ac was accounted for by friction velocity (u*, a measure of turbulence) variables. After accounting for u* variability, mean F ac varied significantly with seasonal and daily changes in precipitation. A seasonal increase in precipitation resulted in a decrease in F ac , similar to our soil respiration response to moisture. The effect of daily changes in precipitation was complex: precipitation after a dry period resulted in a large increase in F ac , whereas additional precipitation after a rainy period had little effect. This response was similar to that of surface litter (coarse and fine), where respiration is greatly reduced when moisture is limiting, but increases markedly and quickly saturates with an increase in moisture.

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“…This is consistent with a water budget for the site showing that >90% of the transpired water was coming from the top 0.35 m of soil (Oren et al 1998a). To correct from area of small roots to total root area, we assumed the small roots contributed 70% of the total area, as was found by direct measurement for a comparable stand of P. taeda (Kinerson 1975).…”

Section: Cavitation Resistance and Tracheid Anatomymentioning

confidence: 99%

Influence of soil porosity on water use in Pinus taeda

Hacke¹,

Sperry²,

et al. 2000

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We analyzed the hydraulic constraints imposed on water uptake from soils of different porosities in loblolly pine (Pinus taeda L.) by comparing genetically related and even-aged plantations growing in loam versus sand soil. Water use was evaluated relative to the maximum transpiration rate (E ) allowed by the soil-leaf continuum. We expected that trees on both soils would approach E during drought. Trees in sand, however, should face greater drought limitation because of steeply declining hydraulic conductivity in sand at high soil water potential (Ψ ). Transport considerations suggest that trees in sand should have higher root to leaf area ratios (A:A ), less negative leaf xylem pressure (Ψ), and be more vulnerable to xylem cavitation than trees in loam. The A :A was greater in sand versus loam (9.8 vs 1.7, respectively). This adjustment maintained about 86% of the water extraction potential for both soils. Trees in sand were more deeply rooted (>1.9 m) than in loam (95% of roots <0.2 m), allowing them to shift water uptake to deeper layers during drought and avoid hydraulic failure. Midday Ψ was constant for days of high evaporative demand, but was less negative in sand (-1.6 MPa) versus loam (-2.1 MPa). Xylem was more vulnerable to cavitation in sand versus loam trees. Roots in both soils were more vulnerable than stems, and experienced the greatest predicted loss of conductivity during drought. Trees on both soils approached E during drought, but at much higher Ψ in sand (<-0.4 MPa) than in loam (<-1.0 MPa). Results suggest considerable phenotypic plasticity in water use traits for P. taeda which are adaptive to differences in soil porosity.

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Relationships Between Plant Surface Area and Respiration in Loblolly Pine

Cited by 67 publications

References 3 publications

Carbon dioxide exchange and growth of a pine plantation

Carbon dioxide exchange and growth of a pine plantation

Respiration From a Tropical Forest Ecosystem: Partitioning of Sources and Low Carbon Use Efficiency

Influence of soil porosity on water use in Pinus taeda

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