EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Estimation of tree canopy leaf area index by gap fraction analysis


, : Estimation of tree canopy leaf area index by gap fraction analysis. Forest Ecology & Management 61(1-2): 91-108

We estimated leaf area index (LAI) in a needle-leaved forest and a broad-leaved orchard using four instruments which measure fractional light penetration through the canopy. Gap fraction data were analyzed by a one-dimensional inversion model or by using the Beer-Lambert Law. Instrument and analytical technique both had a strong influence on calculated LAI. There was no consistent pattern of LAI results among instruments so no simple cross-calibration can be offered. Three of the four instruments accurately estimated orchard LAI when used with one or the other analytical technique. In addition to performance, practical considerations including cost, sampling, and data analysis were also compared among the instruments. Because the instruments do not provide consistently accurate LAI estimates, LAI should be independently corroborated before use in any particular situation. These instruments may be most useful for relative LAI comparisons in a specific canopy type when a single combination of instrument and analytical technique is employed.

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 002373505

DOI: 10.1016/0378-1127(93)90192-P

PDF Full Text: Estimation of tree canopy leaf area index by gap fraction analysis


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

L.C.rre, I.; Delorme, M.; Cournoyer, S., 2007: A prospective, randomized trial comparing a transparent dressing and a dry gauze on the exit site of long term central venous catheters of hemodialysis patients. The objective of this study was to assess the risk of bacteremia, estimate the cost and evaluate the quality of life by using a transparent dressing (TD) versus (vs) a dry gauze (DG) on the exit site of long term central I.V. catheters (LTCC) of h...

Schrank, R.; Hankeln, T.; Winterpacht, A.; Schmidt, E.R., 1997: Instability of insect satellite DNA in transgenic Drosophila melanogaster. Hereditas (Lund) 127(3): 269-270, Dec

Carbone, K.M.; Park, S.W.; Rubin, S.A.; Waltrip, R.W.; Vogelsang, G.B., 1991: Borna disease: association with a maturation defect in the cellular immune response. Borna disease virus (BDV) is a negative-strand RNA virus which produces persistent infection in a variety of experimental animals. In the rat, the presence or absence of clinical signs of Borna disease, a characteristic, biphasic neurobehavioral i...

Merkel, U.; Sigusch, H.; Hoffmann, A., 1993: Excretion of 7-hydroxycoumarin conjugates in human urine. Die Pharmazie 48(8): 626-627

Rank, M.A.; Hagan, J.B.; Park, M.A.; Podjasek, J.C.; Samant, S.A.; Volcheck, G.W.; Erwin, P.J.; West, C.P., 2013: The risk of asthma exacerbation after stopping low-dose inhaled corticosteroids: a systematic review and meta-analysis of randomized controlled trials. Current asthma guidelines suggest that patients and their providers consider decreasing or stopping controller medications when asthma is stable. We sought to estimate the risk of asthma exacerbation in patients who stop low-dose inhaled corticost...

Bureau, Y.R.J.; Peredery, O.; Persinger, M.A., 1994: Concordance of quantitative damage within the diencephalon and telencephalon following systemic pilocarpine or lithium /pilocarpine induced seizures. We tested the hypothesis that a single systemic injection of 380 mg/kg of the muscarinic agonist pilocarpine would produce more diffuse and severe seizure-induced brain damage than a single injection of lithium (3 mEq/kg) followed 4 h later by lt...

Fujisawa, H.; Yamaguchi, M.; Yamauchi, T., 1976: Evidence for participation of NADH-dependent reductase in the reaction of benzoate 1,2-dioxygenase (benzoate hydroxylase). Advances in Experimental Medicine and Biology 74: 118-126

Smith G.P.; Root A.W., 1969: Effect of feeding on plasma insulin responses to 2 deoxy d glucose in conscious monkeys abstract macaca mulatta mild maturity onset diabetes neural hormonal reflexes feeding digestion. Federation Proceedings 28(2): 507

Graybiel, A.M.; Blazquez, P.M., 2002: Adjusting behavior to context Striatal network functions in learning and memory. Nagatsu, Toshiharu [Editor, Reprint Author], Nabeshima, Toshitaka , McCarty, Richard , Goldstein, David S Catecholamine research: From molecular insights to clinical medicine : 361-364

Speer, Eo, 1986: Fungi from Brazil. IV. Glonium parasiticum sp. nov. (Hysteriales) and its conidial form, Cleistonium parasiticum gen. and sp. nov. (Sphaeropsidales). Bulletin trimestriel de la Societe mycologique de France02(1): 101-105