Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Structural differences and functional similarities between two sugar maple (Acer saccharum) stands.

Frédéric Raulier1, Pierre Y Bernier, Chhun-Huor Ung

  • 1Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, #1055 du P.E.P.S., P.O. Box 3800, Sainte-Foy, Quebec, G1V 4C7, Canada. fraulier@cfl.forestry.ca

Tree Physiology
|November 5, 2002
PubMed
Summary

Spatially inexplicit models accurately predict forest transpiration, even with varying canopy structures. This approach simplifies canopy gas exchange estimation for large-scale landscape analysis.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Noise2Recon: Enabling SNR-robust MRI reconstruction with semi-supervised and self-supervised learning.

Magnetic resonance in medicine·2023
Same author

The GIANT trial (ECOG-ACRIN EA2186) methods paper: A randomized phase II study of gemcitabine and nab-paclitaxel compared with 5-fluorouracil, leucovorin, and liposomal irinotecan in older patients with treatment-naïve metastatic pancreatic cancer - defining a new treatment option for older vulnerable patients.

Journal of geriatric oncology·2023
Same author

Improving Data-Efficiency and Robustness of Medical Imaging Segmentation Using Inpainting-Based Self-Supervised Learning.

Bioengineering (Basel, Switzerland)·2023
Same author

Artificial Intelligence System for Automatic Quantitative Analysis and Radiology Reporting of Leg Length Radiographs.

Journal of digital imaging·2022
Same author

Response diversity, functional redundancy, and post-logging productivity in northern temperate and boreal forests.

Ecological applications : a publication of the Ecological Society of America·2018
Same author

Current and projected cumulative impacts of fire, drought, and insects on timber volumes across Canada.

Ecological applications : a publication of the Ecological Society of America·2018

Area of Science:

  • Forest ecology
  • Ecosystem modeling
  • Plant physiology

Background:

  • Forest canopy structure influences light capture and gas exchange.
  • Functional-structural canopy models are used to predict transpiration and photosynthesis.
  • Spatially inexplicit models assume less functional variability than structural variability in closed stands.

Purpose of the Study:

  • To validate the assumption that closed forest stands exhibit less functional than structural variability.
  • To compare structural and functional properties, and measured vs. modeled transpiration fluxes in two sugar maple stands with differing canopy architectures.
  • To assess the efficacy of nonspatially explicit models for estimating canopy gas exchange.

Main Methods:

  • Compared two sugar maple (Acer saccharum Marsh.) stands with similar leaf mass but different height/diameter distributions and canopy structures (single-layer vs. multilayer).

Related Experiment Videos

  • Analyzed structural differences (height, diameter, gap fraction) and functional properties (leaf mass, LMA distributions).
  • Compared measured stand transpiration with estimates from a multilayer gas exchange model using nonspatial inputs (LAI, LMA distribution).

    • Main Results:

    • Significant differences were found in stand height, diameter distributions, and canopy gap fraction.
    • No significant differences were observed in tree-level relationships between basal area and transpiration flux or sapwood area.
    • Modeled daily transpiration closely matched measured values for both stands (r(2) = 0.94).

    Conclusions:

    • The study supports the use of nonspatially explicit models for estimating canopy gas exchange.
    • Functional-structural assumptions in canopy modeling are validated by the close agreement between modeled and measured transpiration.
    • Nonspatially explicit approaches are effective for scaling canopy gas exchange estimates to larger landscapes.