Measurement of forest canopy structure by a laser plane range-finding method

Tanaka, Takafumi; Hotaek, Park; Hattori, Satoshi

doi:10.1016/j.agrformet.2004.02.008

Cited by 24 publications

(12 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such studies include those on ecosystem management (Mas and Dietsch 2003), estimation of biomass and forest productivity (Ryan et al 2004, Lefsky et al 2005, habitat structure of organisms in the forest canopy (Nadkarni and Sumera 2004, Prusinski et al 2006), flux exchange of forests (Tanaka et al 2004), and modeling of stand dynamics (Watanabe et al 2004, Toda et al 2007). …”

Section: Introductionmentioning

confidence: 99%

Ground-based estimation of leaf area index and vertical distribution of leaf area density in a Betula ermanii forest

Sumida¹,

Nakai²,

Yamada³

et al. 2009

Silva Fenn.

View full text Add to dashboard Cite

We developed a ground-based method for estimating leaf area index (LAI) and vertical distribution of leaf area density (LAD) for two Betula ermanii plots, combining an allometric method for tree leaf area with the MacArthur-Horn (MH) method using a portable laser rangefinder, including a correction for changes in leaf inclination angle along the vertical gradient measured with a portable digital protractor from a canopy access tower in each plot. Vertical distribution of projected leaf area density obtained by the MH method (LAD MH ) was transformed to relative distribution for allotting fixed LAI to different heights. Hence, we first developed an allometric method for estimating tree leaf area for LAI determination. Trunk cross-sectional area at branching height (AB) was accurately estimated (r 2 = 0.97) from ground-based measurements of tree dimensions. We used this method to apply pipe model allometry between tree leaf area and AB, and estimated LAI (4.56 and 4.57 m 2 m -2 ). We then examined how leaf inclination angle affected estimation of the vertical distribution of actual LAD. Leaf inclination angle measurements revealed that actual LAD in the upper canopy was 1.5-1.8-times higher than LAD MH , because of steep leaf inclination, while the correction factor was 1.15-1.25 in the lower canopy. Due to the difference among heights, vertical distribution of LAD estimated with correction for vertical change in leaf inclination was more skewed to the upper canopy than that without correction. We also showed that error in LAD distribution can result if horizontal canopy heterogeneity is neglected when applying the MH method.

show abstract

Section: Introductionmentioning

confidence: 99%

Ground-based estimation of leaf area index and vertical distribution of leaf area density in a Betula ermanii forest

Sumida¹,

Nakai²,

Yamada³

et al. 2009

Silva Fenn.

View full text Add to dashboard Cite

show abstract

“…Although portable ground-based nonscanning lidar has been used in several studies of vertical foliage profiles (Parker et al, 2004;Radtke and Bolstad, 2001), portable ground-based scanning lidar is now more popular for the measurement (Henning and Radtke, 2006;Hosoi and Omasa, 2006, 2007, 2009aLovell et al, 2003;Omasa et al, 2002Omasa et al, , 2007aTakeda et al, 2005;Tanaka et al, 2004;Urano and Omasa, 2003;van der Zande et al, 2006). The latter can record much 3D data quickly and nondestructively.…”

Section: Introductionmentioning

confidence: 97%

Estimation of vertical plant area density profiles in a rice canopy at different growth stages by high-resolution portable scanning lidar with a lightweight mirror

Hosoi

Omasa

2012

ISPRS Journal of Photogrammetry and Remote Sensing

View full text Add to dashboard Cite

“…Several researchers have attempted to measure vertical foliage profiles using portable ground-based nonscanning lidar (Parker et al, 2004;Radtke and Bolstad, 2001). At present, portable ground-based scanning lidar is more often used for the measurement because it allows more efficient data collection than the nonscanning type (Henning and Radtke, 2006;Omasa, 2006, 2007;Lovell et al, 2003;Omasa et al, 2002Omasa et al, , 2007aTakeda et al, 2005;Tanaka et al, 2004;Urano and Omasa, 2003;Van der Zande et al, 2006).…”

Section: Introductionmentioning

confidence: 97%

Estimating vertical plant area density profile and growth parameters of a wheat canopy at different growth stages using three-dimensional portable lidar imaging

Hosoi

Omasa

2009

ISPRS Journal of Photogrammetry and Remote Sensing

137

View full text Add to dashboard Cite

Measurement of forest canopy structure by a laser plane range-finding method

Cited by 24 publications

References 8 publications

Ground-based estimation of leaf area index and vertical distribution of leaf area density in a Betula ermanii forest

Ground-based estimation of leaf area index and vertical distribution of leaf area density in a Betula ermanii forest

Estimation of vertical plant area density profiles in a rice canopy at different growth stages by high-resolution portable scanning lidar with a lightweight mirror

Estimating vertical plant area density profile and growth parameters of a wheat canopy at different growth stages using three-dimensional portable lidar imaging

Contact Info

Product

Resources

About