Abstract
The paper investigates methodology comparisons for retrieving effective leaf area index (LAI) using digital hemispherical photograph (DHP) in rice canopy. A set of self-making DHP instrument equipped with a fish-eye Len is utilized to acquire DHP in rice canopy, and some self-developing DHP processing procedures are utilized to pre-process DHP and extract effective LAI from DHP (LAIDHP) rapidly. Based on Beer-Lambert’s law and gap fraction that computed from DHP, four methods of single zenith angle (SZA), Lang, Mill formula(Mf) and iterative formula(IF) are used to derive LAIDHP(effective LAI from them are called LAISZA, LAILang LAIMf and LAIIF ,respectively). LAISZA, LAILang, LAIMf and LAIIF are inter-compared and are also compared with from AccuPAR LP-80(LAIAPAR) and direct manual method (LAIdirect). It is found that, in general, LAISZA, LAILang LAIMf and LAIIF are similar to LAIAPAR, but slightly lower than LAIdirect. During their intercomparsion, LAILang is more similar to LAIAPAR than other three and LAIMfis more similar to LAIdirect, while LAISZA and LAILang are almost the same. It is implied that Lang method outperformed the other three when compared with AccuPAR LP-80 and Mill formula method outperformed the other three when compared with direct manual measure.
Chapter PDF
Similar content being viewed by others
References
Macfarlane, C., Hoffman, M., Eamus, D., Kerp, N., Higginson, S., McMurtrie, R., Adams, M.: Estimation of leaf area index in eucalypt forest using digital photography. Agricultural and Forest Meteorology 143, 176–188 (2007)
Wu, W.B., Hong, T.S., Wang, X.P.: Advance in ground based LAI measurement methods. Journal of Huazhong Agricultural University 126, 270–275 (2007)
Norman, J.M., Campbell, G.S.: Canopy structure. In: Pearcy, W., Ehleringer, J.R., Mooney, H.A., Rundel, P.W. (eds.) Plant Phsiological Ecology: Field Methods and Instrumentation, pp. 301–325. Chapman and Hall, London (1989)
Daughtry, C.S.T.: Direct measurements of canopy structure. Remote Sensing Reviews 5, 45–60 (1990)
Welles, J.M.: Some indirect methods of estimating canopy structure, in Instrumentation for Studying Vegetation Canopies from Remote Sensing in Optical and Infrared Regions. Remote Sensing Reviews 5, 96–101 (1990)
Welles, J.M., Cohen, S.: Canopy structure measurement by gap fraction analysis using commercial instrumentation. Journal of Experimental Botany 47, 1335–1342 (1996)
Pierce, L.I., Running, S.W.: Rapid estimation of coniferous forest leaf area index using a portable integrating radiometer. Ecology, Ecological Society of America 69, 1762–1767 (1988)
Wilson, J.W., Reeve, J.E.: Inclined point quadrats. New Phytologist 59, 1–8 (1960)
Vickery, P.J., Bennet, I.L., Nicol, G.R.: An improved electronic capacitance meter for estimating herbage mass. Grass and Forage Science 35, 247–252 (1980)
Chen, J.M., Black, T.A., Adams, R.S.: Evaluation of hemispherical photography for determining plant area index and geometry of a forest stand. Agricultural and Forest Meteorology 56, 129–143 (1991)
Frazer, G.W., Trofymow, J.A., Lertzman, K.P.: Canopy openness and leaf area in chronosequences of coastal temperate rainforests. Canada Journal of Forest Research 30, 239–256 (2000)
Fournier, R.A., Landry, R., August, N.M., Fedosejevs, G., Gauthier, R.P.: Modeling light obstruction in three conifer forests using hemispherical photography and fine tree architecture. Agricultural and Forest Meteorology 82, 47–72 (1996)
Levy, P.E., Jarvis, P.G.: Direct and indirect measurements of LAI in millet and fallow vegetation in HAPEX-Sahel. Agricultural and Forest Meteorology 97, 199–212 (1999)
Lemeur, R., Blad, B.L.: A critical review of light models for estimating the shortwave radiation regime of plant canopies. Agricultural and Forest Meteorology 14, 255–286 (1974)
Nilson, T.: Inversion of the frequency of gaps in plant stands. Agricultural and Forest Meteorology 8, 25–38 (1971)
Chen, J.M., Black, T.A.: Measuring leaf area index of plant canopies with branch architecture. Agricultural and Forest Meteorology 57, 1–12 (1991)
Chen, J.M., Cihlar, J.: Plant canopy gap-size analysis theory for improving optical measurements of leaf area index. Applied Optics 34, 6211–6222 (1995)
Chen, J.M.: Optically-based methods for measuring seasonal variation of leaf area index in boreal conifer stands. Agricultural and Forest Meteorology 80, 135–163 (1996)
Cattleman, K.R. (ed.), Zhu, Z.G. (Trans.): Digital Image Processing. Publishing House of Electronics Industry, Beijing (1998) (in Chinese)
Monsi, M., Saeki, T.: Uber den Lichtfaktor in den Pflanzengesellschaften und seine Bedeutung für die Stoffproduktion. The Journal of Japanese Botany 14, 22–52 (1953)
Welles, J.M., Norman, J.M.: Instrument for indirect measurement of canopy architecture. Agronomy Journal 83, 818–825 (1991)
Weiss, M., Beret, M., Smith, G.J., Jonckheere, I., Coppin, P.: Coppin: Review of methods for in situ leaf area index (LAI) determination Part II. Estimation of LAI, errors and sampling. Agricultural and Forest Meteorology 121, 37–53 (2004)
Lang, A.R.G.: Leaf area and average leaf angle from transmission of direct sunlight. Australian Journal of Botany 34, 49–55 (1996)
Wilson, J.W., Reeve, J.E.: Estimation of foliage denseness and foliage angle by inclined point quadrats. Australian Journal of Botany 11, 95–105 (1963)
Miller, J.B.: A formula for average foliage density. Australian Journal of Botany 15, 141–144 (1967)
Perry, S.G., Fraser, A.B., Thomson, D.W., Norman, J.M.: Indirect sensing of plant canopy structure with simple radiation measurements. Agricultural and Forest Meteorology 42, 255–278 (1988)
Nelder, J.A., Mead, R.: A simplex method for function minimization. The Computer Journal 7, 308–313 (1965)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 IFIP International Federation for Information Processing
About this paper
Cite this paper
Zhou, L., Pan, G., Shi, Z. (2011). Methodology Comparison for Effective LAI Retrieving Based on Digital Hemispherical Photograph in Rice Canopy. In: Li, D., Liu, Y., Chen, Y. (eds) Computer and Computing Technologies in Agriculture IV. CCTA 2010. IFIP Advances in Information and Communication Technology, vol 345. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-18336-2_9
Download citation
DOI: https://doi.org/10.1007/978-3-642-18336-2_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-18335-5
Online ISBN: 978-3-642-18336-2
eBook Packages: Computer ScienceComputer Science (R0)