Kallel, A. and Nilson, T. (2013). Revisiting the vegetation hot spot modeling: Case of Poisson/Binomial leaf distributions.
Remote Sensing of Environment, 130, 188-204.
Nilson, T., Rautiainen, M.,
Pisek, J., and Peterson,
U. (2012). Seasonal
Reflectance Courses of Forests. In: Dr. Andrew A. Oteng-Amoako
(Ed.), New Advances and Contributions to Forestry Research. InTech, 33-58.
ISBN: 978-953-51-0529-9, Available from:
http://www.intechopen.com/books/new-advances-and-contributions-to-forestry-research/seasonal-reflectance-course-of-forests
Nilson, T., Lang, M., Rautiainen,
M., Pisek, J., Peterson, U., Kuusk,
A., Kuusk, J., and Eenmäe, A. (2012). Time courses of reflectance for some forest types in Estonia. 1st EARSeL Workshop on Temporal
Analysis of Satellite Images. Mykonos, Greece, May 23-25, 2012,
234-239.
http://www.earsel.org/SIG/timeseries/pdf/proceedings/proceedings_032.pdf
Eenmäe, A., Nilson, T., and
Lang, M. (2011). A note on meteorological
variables related trends in the MODIS NPP product for Estonia. Metsanduslikud Uurimused
(Forestry Studies), 55, 60-63.
Kodar, A., Lang, M., Arumäe,
T., Pisek, J., Nilson, T. (2011). Metsa lehepinnaindeksi kaardistamine lennukilidari, satelliidipiltide ja maapealsete
mõõtmiste abil Järvselja VALERI testalal. Metsanduslikud Uurimused
(Forestry Studies), 55, 9-30.
Nilson, T., Kuusk, A.,
Lang, M., Pisek, J., and Kodar, A. (2011). Simulation of statistical characteristics of gap distribution in
forest stands. Agricultural and Forest Meteorology, 151(7), 895-905.
Pisek, J., Chen, J.M.,
and Nilson, T. (2011). Estimation of vegetation clumping index using
MODIS BRDF data. International Journal of Remote
Sensing, 32(9), 2645–2657.
Pisek, J., Lang, M., Nilson,
T., Korhonen, L., and Karu, H. (2011). Comparison of methods for measuring gap size
distribution and canopy nonrandomness at Järvselja RAMI (RAdiation
transfer Model Intercomparison) test sites. Agricultural
and Forest Meteorology, 151(3), 365-377.
Kuusk, A., Nilson, T., Kuusk, J., and Lang, M. (2010). Reflectance spectra of RAMI forest stands in Estonia: Simulations and measurements. Remote Sensing of Environment, 114(12), 2962-2969.
Ryu, Y., Nilson, T., Kobayashi, H., Sonnentag, O., Law, B.E., and Baldocchi, D.D. (2010). On the correct estimation of effective leaf area index: Does it reveal information on clumping effects? Agricultural and Forest Meteorology, 150(3), 463-472.
Kuusk, A., Kuusk, J., Lang, M., and Nilson, T. (2010). Reflectance spectra of RAMI stands in Estonia. 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS 2010), Reykjavik, Iceland, June 2010. CD-ROM, 4 pp.
Mänd, P, Hallik, L., Peñuelas, J., Nilson, T., Duce, P., Emmett, B.A., Beier, C., Estiarte, M., Garadnai, J., Kalapos, T., Schmidt, I.K., Kovács-Láng, E., Prieto, P., Tietema, A., Westerveld, J.W., and Kull, O. (2010) Responses of the reflectance indices PRI and NDVI to experimental warming and drought in European shrublands along a north–south climatic gradient. Remote Sensing of Environment, 114(3), 626-636.
Ryu,
Y., Sonnentag, O., Nilson,
T., Vargas, R., Kobayashi, H., Wenk,
R., and Baldocchi,
D.D. (2010). How to quantify tree leaf
area index in an open
savanna ecosystem: A
multi-instrument and multi-model approach.
Agricultural and Forest
Meteorology, 150(1), 63-76.
Lang,
M., Kuusk, A., Mõttus, M., Rautiainen, M., and Nilson, T.
(2010). Canopy gap fraction estimation from digital hemispherical
images using sky radiance models
and a linear conversion method. Agricultural
and Forest Meteorology,
150(1), 20-29.
Hallik, L., Kull, O., Nilson, T., and Peñuelas, J. (2009). Spectral reflectance of multispecies herbaceous and moss canopies in the boreal forest understory and open field. Canadian Journal of Remote Sensing, 35(5), 474-485.
Rautiainen, M., Nilson, T., and Lükk, T. (2009) Seasonal reflectance trends of hemiboreal birch forests. Remote Sensing of Environment, 113(4), 805-815.
Kodar, A., Kutsar, R.,
Lang, M., Lükk, T., and
Nilson, T. (2008) Leaf area indices of forest
canopies from optical measurements. Baltic
Forestry, 14(2), 185-194.
Nilson, T., Suviste, S., Lükk, T., and Eenmäe, A. (2008) Seasonal reflectance course of some forest types in Estonia from a series of Landsat TM and SPOT images and via simulation. International Journal of Remote Sensing, 29(17-18), 5073–5091.
Rautiainen, M., Lang, M., Mõttus, M., Kuusk, A., Nilson, T., Kuusk, J., and Lükk, T. (2008) Multi-angular reflectance properties of a hemiboreal forest: an analysis using CHRIS PROBA data. Remote Sensing of Environment, 112, 2627-2642.
Kuusk, A., Nilson, T., Paas, M., Lang, M., and Kuusk, J. (2008) Validation of the forest radiative transfer model FRT. Remote Sensing of Environment, 112, 51-58.
Suviste, S., Nilson, T., Lükk, T. and Eenmäe, A. (2007) Seasonal reflectance course of some forest types in Estonia from multi-year LANDSAT TM and SPOT images and via simulation. Proceedings of Multi Temp 2007, 18-20 July, Leuven, Belgium, eds: G.J.M. De Lannoy, R. Hoeben, N.E.C. Verhoest, W.W. Verstraeten, S. Bruneel, P. Coppin, CD-ROM by Katholike Universitet Leuven, 5 pp.
Lang, M., Nilson, T., Kuusk, A., Kiviste, A., and Hordo, M. (2007) The performance of foliage mass and crown radius models in forming the input of a forest reflectance model: A test on forest growth sample plots and Landsat 7 ETM+ images. Remote Sensing of Environment, 110, 445-457.
Kuusk, A., Kuusk, J., Lang, M., Lükk, T., and Nilson, T. (2007) Hyperspectral reflectance of sub-boreal forests measured by CHRIS/PROBA and airborne spectrometer. Proc. ‘Envisat Symposium 2007’, Montreux, Switzerland 23–27 April 2007, ESA SP-636, July 2007, 6 pp.
Nilson, T., Lükk, T., Suviste, S., Kadarik, H., and Eenmäe, A. (2007) Calibration of time series of satellite images to study the seasonal course of forest reflectance. Proc. Estonian Acad. Sci. Biol. Ecol., 56(1), 5-18.
Nilson, T., Suviste, S., Lükk, T., and Eenmäe, A. (2006) Seasonal reflectance course of some forest types in Estonia as determined from a series of Landsat TM and SPOT images and via simulation. 2nd International Symposium Recent Advances in Quantitative Remote Sensing, 25/29 September 2006,Torrent (Valencia) Spain, Abstract Book, 70-71.
Eriksson, H.M., Eklundh, L., Kuusk, A., and Nilson, T. (2006) Impact of understory vegetation on forest canopy reflectance and remotely sensed LAI estimates. Remote Sensing of Environment 103(4), 408-418.
Rautiainen, M., Stenberg, P. and Nilson, T. 2005. Estimating canopy cover in Scots pine stands. Silva Fennica, 39 (1):137-142.
Kuusk, A., Lang, M., and Nilson, T. 2004. Simulation of the reflectance of ground vegetation in sub-boreal forests, Agricultural and Forest Meteorology, 126(1-2): 33-46.
Nilson, T. and Kuusk, A. 2004. Improved algorithm for
estimating canopy indices from gap fraction data in forest canopies. Agricultural and Forest Meteorology, 124:157-169.
Pinty, B., Widlowski,
J.-L., Taberner, M., Gobron,
N., Verstraete, M. M., Disney, M., Gascon, F., Gastellu, J.-P.,
Jiang, L., Kuusk, A., Lewis, P., Li, X., Ni-Meister,
W., Nilson, T.,
North, P., Qin, W., Su, L., Tang, S., Thompson, R., Verhoef,
W., Wang, H., Wang, J., Yan, G., and Zang, H. 2004. Radiation Transfer Model Intercomparison
(RAMI) exercise: Results from the second phase, J. Geophys.
Res., 109(D6): D06210 10.1029/2003JD004252 25 March 2004.
Rautiainen, M., Stenberg, P., Nilson,
T., and Kuusk, A. 2004. The effect of crown shape on the reflectance of coniferous stands, Remote
Sensing of Environment, 89(1): 41-52.
Nilson, T., Kuusk, A., Lang, M., and Lükk, T. 2003. Forest reflectance modeling: Theoretical aspects and applications, Ambio, 32(8):535-541.
Stenberg, P., Nilson, T., Smolander, H., and Voipio, P. 2003. Gap fraction based estimation of LAI in Scots pine stands subjected to experimental removal of branches and stems, Canadian Journal of Remote Sensing, 29(3):363-370.
Rautiainen, M., Stenberg, P., Nilson, T. Kuusk, A., and Smolander, H. 2003. Application of a forest reflectance model in estimating leaf area of Scots pine stands using Landsat-7 ETM reflectance data, Canadian Journal of Remote Sensing, 29(3): 314-323.
Nilson, T. and Kuusk, A. 2002. Simulation of reflectance spectra in boreal coniferous forest. In: J.A. Sobrino (ed) Proceedings of the First International Symposium on Recent Advances in Quantitative Remote Sensing, Auditori de Torrent, Spain, 16-20 September 2002, Universitat de València, 31-38.
Kuusk, A., Nilson,
T. and Paas, M. 2002. Angular distribution of radiation beneath forest canopies using a
CCD-radiometer. Agricultural
and Forest Meteorology, 110:259-273.
Nilson, T. 2001. Satelliidipildid ja metsandus. Tähetorni kalender 2002, Tõravere, 89-97. (in Estonian. Satellite images and forestry)
Kuusk, A. and Nilson, T. 2001. Testing
directional properties of a forest reflectance model. J. Geophys. Res. - Atmospheres, 106(D11): 12011-12022.
Nilson, T., Olsson, H., Anniste, J., Lükk, T. and Praks, J. 2001.Thinning-caused change in reflectance of ground vegetation in
boreal forest. Int. J. Remote Sensing, 22(14):2763-2776.
Chen, J. M., Li, X., Nilson, T. and Strahler, A. 2000. Recent advances in geometrical optical modelling and its applications. Remote Sensing Reviews.18 (2-4):227-262.
Nilson, T., Lang, M., Kuusk, A., Anniste, J., and Lükk, T. 2000. Forest reflectance model as an interface between satellite images and forestry databases, In: Zawila-Niedzwiecki, T. and Brach, M., Eds, EUR 19530 - Remote Sensing and Forest Monitoring, Luxembourg: Office for Official Publications of the European Communities, pp. 462-476.
Nilson, T. 2000. Academician Juhan Ross 75. Proceedings of the Estonian Academy of Sciences. Physics, Mathematics, 49(3):190-192.
Kuusk, A. and Nilson, T. 2000. A directional multispectral forest reflectance model. Remote Sensing of Environment, 72(2):244-252.
Nilson, T. 2000. On the use of satellite remote sensing in Estonian forestry and agriculture. Materials of Seminar 'Science to the Society', 3.12.1999. Estonian Academy of Sciences, Tallinn, pp. 5-10 (in Estonian).
Nilson, T. 2000. Kosmilise kaugseire rakendusvõimalusi Eesti metsanduses ja põllumajanduses. Eesti Teaduste Akadeemia seminari materjalid, 3.12.1999, Tallinn, 5-10 (in Estonian, On the use of satellite remote sensing in Estonian forestry and agriculture).
Nilson, T., Kuusk, A., Lang, M., Lükk, T., Anniste, J., Peterson, U. 1999. Satelliidipiltidel baseeruva metsakorralduse alused. Pidev metsakorraldus. EPMÜ Metsandusteaduskonna toimetised 32. (Forest management system based on satellite imagery. Transactions of the Faculty of Forestry, Estonian Agric. Univ. no 32), Tartu, pp. 81-87 (in Estonian).
Nilson, T., Kuusk,
A., Anniste, J. and Praks,
J. 1999. Forest
ecosystem radiation model (FERM). Agricultural
and Forest Meteorology, 98-99. Documented dataset on
appended CD.
Nilson, T., Anniste,
J., Lang, M. and Praks, J. 1999. Determination of needle area
indices of coniferous forest canopies in the NOPEX region by ground-based
optical measurements and satellite images. Agricultural
and Forest Meteorology, 98-99:449-462.
Nilson, T. 1999. Inversion of gap
frequency data in forest stands. Agricultural
and Forest Meteorology, 98-99:437-448.
Nilson, T. Kuusk, A. Leroy, M. 1999. A comparison of forest BDRF simulated by the forest reflectance model and determined by airborne POLDER for some BOREAS sites. Proceedings of ALPS99 Symposium, January 18-22, Méribel, CNES, 2, WK3-O-07, p. 1-4.
Nilson, T., Kuusk, A., Lang, M., Lükk, T., Anniste, J. 1999. Forest reflectance model as an interface between satellite images and forestry databases. Abstracts IUFRO Remote Sensing and Forest Monitoring Conference (Rogow 99).
Nilson, T., Kuusk, A., Lang, M. and Lükk, T. 1999. Relations between site index and reflectance of forest stands. IUFRO Workshop on Canopy Dynamics and Forest Management - A Missing Link? August 1-11, 1999 in Estonia, Finland and Sweden. Workshop Abstracts, p. 2.
Kuusk, A. and Nilson, T. 1999. A directional multispectral forest reflectance model.
Abstracts 2nd International Workshop on Multiangular
Measurements and Models, 15-17 September 1999, Ispra
(VA) Italy, p. 21-22.
Nilson, T. 1997. A BRDF model for forests. Journal of Remote Sensing, 1: 77-81.
Nilson, T. 1997. Metsanduslike andmebaaside, satelliidiülesvõtete, metsa heleduse ja
kasvumudelite integreerimisest
ühtsesse geoinfosüsteemi. Eesti Põllumajandusülikool, Teadustööde Kogumik, 189. Metsandus, Tartu, 133-139 (in Estonian, On
integrating forestry databases, satellite images, forest reflectance and growth
models into a GIS).
Nilson, T. and Ross, J. 1997. Modeling radiative transfer through
forest canopies: Implications for canopy photosynthesis and remote sensing.
In: (Gholz, H. L., Nakane,
K. and Shimoda, H., eds.) The Use of Remote Sensing in the Modeling of Forest Productivity.
Kluwer Acad. Publ., Dordrecht, pp. 23-60.
Nilson, T. and Stenberg, P. 1996.
Theoretical aspects on radiation submodels used in
forest growth models. In: (P.Hari, J. Ross and M. Mecke, eds.) Production
Process of Scots Pine; Geographical Variation and Models. Acta Forestalia Fennica, 254: 39-48.
Nilson, T., Kuusk,
A., Joffre, R., Lacaze, B., Methy,
M. and Peterson, U. 1995. Determination of forest
ecosystem parameters by inversion of a forest reflectance model. In: (G.
Guyot, ed.), Proc. Int. Colloq. Photosynthesis and
Remote Sensing, 28 30 Aug. 1995, Montpellier, NASA, ESA, JRC, INRA, CNES,
IFREMER, EARSeL, ISPRS, Montpellier, p. 149 157.
Nilson, T. and Olsson, H. 1995. Effect of thinning cutting on boreal forest reflectance. Int. J. Remote Sensing,
16: 2963-2968.
Nilson, T. and Peterson, U. 1994. Age
dependence of forest reflectance: analysis of main driving factors. Remote Sens. Environ.,
48: 319-331.
Nilson, T. 1994. Metsade kaugseire alused. Tartu, Eesti Metsaamet, Eesti Põllumajandusülikool, Metsakorralduse Instituut, 160 lk. (Metsanduslikud
mudelid; 1);(in Estonian,
Basis of forest remote sensing)
Nilson, T., Peterson, U., Päivinen, R. 1993. Deviations from normal successional reflectance trajectories in damaged Scots pine
stands. In: (G. Preto and B. Koch, eds.)
Forest Resource Inventory and Monitoring and Remote Sensing
Technology. Proc. IUFRO Centennial Symp,
Berlin 27 Aug. 02 Sept. 1992, Japan Society of Forest
Planning Press, Tokyo, pp. 151-160.
Nilson, T., Peterson, U. 1993. On the use of remote sensing in monitoring of forest development.
In: (Ü. Mander, J. Fenger,
T. Oja, M. Mikk, eds.) Energy, Environment, Natural
Resources Management in the Baltic Sea Region. 4th Int. Conf. on System
Analysis, Tallinn, Estonia, May 18-21, 1993. Nordiske
Seminar Og Arbeidsrapporter 653, pp. 247-255.
Nilson, T., Peterson, U. 1993. Temporal reflectance trajectories of forest communities in Estonia.
Annual Report of the Estonian Academy of Sciences 1992,
Tallinn, pp.16-17.
Peterson, U. and Nilson, T. 1993, Successional
reflectance trajectories in northern temperate forests. Int. J. Remote Sensing, 14 (3): 609-613.
Ross,J., Knyazikhin Y., Kuusk A., Marshak A., Nilson T. 1992. Mathematical Modeling of the Solar Radiation Transfer in Plant
Canopies. Gidrometeoizdat, St. Petersburg, 195
p. (in Russian).
Nilson, T. 1992. A
forest ecosystem radiation model. Int. Radiation Symp. IRS'92, Tallinn, Estonia,3 8
Aug. 1992, Tallinn, 2: 299.
Nilson, T. 1992. Radiative
transfer in nonhomogeneous plant canopies. In:
(G. Stanhill, ed.) Advances
in Bioclimatology, Springer Verlag, 1:
59 88.
Nilson T. 1991. Approximate
Analytical Methods for Calculating the Reflection Functions of Leaf Canopies in
Remote Sensing Applications. In: (R. B. Myneni and J.
Ross, eds.) Photon-Vegetation Interactions:
Applications in Optical Remote Sensing and Plant Ecology, Springer-Verlag, Berlin, Heidelberg, p.161-190.
Herbert, T. J. and Nilson, T. 1991. A model of variance of
photosynthesis between leaves and maximization of whole plant photosynthesis.
Photosynthetica, 25: 597-606.
Nilson, T. 1991. Effect of needle
loss on coniferous forest reflectance: a model prediction. 11th
Annual Int. Geosci. and
Remote Sens. Symp. IGARSS'91
Proceedings, Helsinki University of Technology, Espoo, Finland, June 3 6,
1991, 1543 1546.
Nilson, T. 1991. A forest canopy
reflectance model.11th Annual
Int. Geosci. and
Remote Sens. Symp. IGARSS'91
Proceedings, Helsinki University of Technology, Espoo, Finland, June 3 6,
1991, 1559 1560.
Nilson, T. 1991. Radiative
Transfer in Non homogeneous Plant Canopies. Abstract
of Ph.D. Theses, Tartu University, 23 pp.
Nilson T., Peterson U. 1991. A Forest Canopy Reflectance Model and a Test Case. Remote Sens.Environ.,37:131-142.
Nilson, T. 1990. A
forest canopy reflectance model. Earth
Res. from Space (Sov. J. Remote Sens.), 3:
63 72 (in Russian).
Nilson, T. and Peterson, U. 1990. Testing of a forest reflectance model. In: Aerospace
monitoring of boreal forests.(Abstracts of All-Union
Conference, Krasnoyarsk, 15-17 November
1990) Acad. Sci. USSR, Krasnoyarsk, 110-111.
Kuusk, A. and Nilson, T. 1989. The
Reflectance of Shortwave Radiation from Multilayer Plant Canopies, Tallinn,
Acad. Sci. ESSR, Preprint A 1(1989), 72 pp.
Nilson, T. and Kuusk, A. 1989. A
reflectance model for the plant canopy and its inversion. Remote Sens. Environ., 27: 157 167.
Nilson, T. 1989. Spectral
reflectance factors and productivity of forest communities. In: Ecolgy of Northern forests (Abstracts of the symposium,
part II). Acad. Sci. USSR, Syktyvkar, p.21 (in Russian)
Nilson, T. A. 1988. Linear transforms
of spectral reflectance data in the analysis of crops. Earth Res. from Space (Sov. J. Remote Sens.), 14: 95-103 (in Russian).
Nilson, T. 1988. Spectral-temporal
reflectance profiles for some cereals, Tartu, Estonian Acad. Sci. Preprint, A-10: 53 pp.
Nilson, T. and Kuusk, A. 1988. An approximate model to
calculate the reflectance factors of vegetation. In: Numerical methods of
solving the radiative transfer equation. Acad. Sci.
Estonia, Tartu, 1988, 146-149 (in Russian).
Peterson, U., Nilson, T. 1988. Eesti männikute seisundi
kaugseire tulemusi. Kaasaegse ökoloogia probleemid, TRÜ, ELUS ja
ELKS Eesti Ökoloogiakogu,
Tartu, 106-108. (in Estonian, On the state of Estonian
pine forests estimated by remote sensing )
Peterson, U. and Nilson, T. 1988. Linear transforms of spectral
reflectance data in landscape analysis. In: Structure and landscape ecology of geosystems. Publications of Tartu State University, 808:
34-45 (in Russian).
Ross, Yu. K., Kuusk, A. E., Nilson, T. A. 1988. The
bases of quantitative theory of plant cover brightness. In: Photosynthesis and
Production Process (ed. A.A. Nichiporovich), Nauka, Moscow, 187-198 (in Russian).
Nilson, T., Roostalu,
H., Kõdar, J. and Ross, J. 1988. Correlation
between barley yield and spectral reflectance at successive growth stages, Earth Res. from Space, 3: 67-73 (in Russian).
Tullus, H. H., Nilson, T. A. and Tamm, Yu. A. 1988. Regime
of diffuse radiation in a medium-aged Scots pine forest after thinning. Lesovedeniye, 3, 48-55, (in Russian)
Peterson, U., Kuusk, A., Nilson, T., Pajusalu, P., Ross, J. and Ross, K. 1987. Linear
transforms of reflectance factor data in understanding the functioning of forest biogeozoenosis.
Proc. Symp. Experiment and
mathematical modelling in studying forest and wetland
biogeozoenosis. Moscow,
251-261 (in Russian).
Ross, J., Nilson, T., Kõdar, J., Safina, N., Makke, A., Ross, V., Roostalu, H. 1987. Odrakülvi
struktuur, optiliste omaduste ja
saagikuse vahelistest seostest. Teaduse saavutusi ja
eesrindlikke kogemusi põllumajanduses, 5: 25-29. (in
Estonian, Barley crop structure, relations between optical properties and
yield)
Nilson, T. and Ross, J. 1986. A review of models of vegetation spectral reflectance. In:
Remote Methods of Studying Agricultural Communities. Leningrad, Gidrometeoizdat, 3-6 (in Russian).
Nilson, T., Anton, J., Kuusk, A., Kydar, J., Ross, J.
and Savihhin, A. 1986. Correlation
links between radiance properties of some agricultural stands in different
spectral regions and their interpretation. In: Remote Methods of Studying
Agricultural Communities. Leningrad, Gidrometeoizdat,
66-76 (in Russian).
Ross, J. K., Galinis, A. A., Nilson, T. A. and
Ross, K. J. 1986. Effect of liming on soil
reflectance. Earth Res. from Space
(Sov. J. Remote Sens.), 6: 84-88
(in Russian).
Hari, P., Kaipiainen,
L., Korpilahti, E., Mäkelä,
A., Nilson, T., Oker-Blom,
P., Ross, J. and Salminen, R. 1985. Structure,
radiation and photosynthetic production in coniferous stands, Univ. Helsinki,
Dept. Silvic., Res. Notes 54: 233.
Nilson, T. and Kuusk, A. 1985. Approximate analytic
relationships for the reflectance of agricultural vegetation canopies. Earth Res. from Space (Sov. J. Remote Sens.), 4: 814-826 (in
Russian).
Nilson, T. 1984. Calculation
of the radiation regime of a forest. In: Radiative
climatology and applied actinometry. Materials XII
Conf. Actinometry, Irkutsk, 179-181 (in Russian).
Kuusk, A., Anton, J., Nilson, T., Peterson, U., Ross, K., Ross, J. and Savihhin, A. 1984. Reflection indicatrices of vegetation covers. Earth Res. from Space, (Sov. J. Remote
Sens.), 5:
68-75 (in Russian).
Hari, P., Nilson,
T., Salminen, R., Kaipiainen,
L., Korpilahti, E. and Ross, J. 1984. Nonlinear
dependence of photosynthetic rate on irradiance and its consequences for
estimation of saccharides formed. Photosynthetica, 18(1):28-33.
Salminen, R., Nilson,
T., Hari, P., Kaipiainen,
L. and Ross, J. 1983. A comparison of different
methods for measuring the canopy light regime. J. Applied Ecology, 20: 897-904.
Nilson, T. A., Anton, J. A. and
Aplei, V. B. 1983. seasonal course of spectral reflectance coefficients of barley
and rye canopies. Earth Res. from Space
(Sov. J. Remote Sens.), 5: 72-80
(in Russian).
Nilson, T. A., Anton, J. A., Aplei,
V. B., Kõdar, J. J., Ross, V. A. and Ross, J. K. 1982. On estimation of cereals maturity stage by remote sensing. Earth Res. from Space (Sov. J. Remote Sens.), 1: 41-47 (in
Russian).
Ross, K., Nilson, T. and Ross, J. 1980. A model for calculating the radiation regime in plant canopies.
In: Abstracts of the XI All-Union Conference on Actinometry.
Part VII Phytoactinometry.
Acad. Sci. USSR, Tallinn, 12-15 (in Russian).
Nilson, T., Aplei,
V., Aho, A., Ross, K. and Ross, J. 1980. A statistical
analysis of reflectance factors for some surface types. In: Abstracts of the XI
All-Union Conference on Actinometry. Part VII Phytoactinometry. Acad.
Sci. USSR, Tallinn, 81-84 (in Russian).
Anton, J., Nilson, T., Aplei, V., Aho, A., Ross, K. and Ross, J. 1980. Correlations between radiative
temperatures and reflectance factors of some natural objects. In:
Abstracts of the XI All-Union Conference on Actinometry.
Part VII Phytoactinometry.
Acad. Sci. USSR, Tallinn, 85-88 (in Russian).
Ross, K., Aplei, V., Aho, A., Nilson, T. and Ross, J. 1980. Reflection indicatrixes of some
vegetation types. In: Abstracts of the XI All-Union Conference on Actinometry. Part VII Phytoactinometry.
Acad. Sci. USSR, Tallinn, 113-116 (in Russian).
Nilson, T. 1980. Calculation
of the hot spot effect for forests. In: Abstracts of the XI All-Union
Conference on Actinometry. Part VII
Phytoactinometry. Acad. Sci. USSR, Tallinn,
117-120 (in Russian).
Nilson, T. 1980. Reduction
of measured spectral albedos of vegetation to the
same sun angle and soil moisture. In: Abstracts of the XI All-Union
Conference on Actinometry. Part VII
Phytoactinometry. Acad. Sci. USSR, Tallinn,
125-128 (in Russian).
Nilson, T. and Ross, V. 1979. Characterization of the transparency of a forest canopy by fish-eye
photographs. In: Spruce Forest Ecosystem Strucure
and Ecology , 2, Estonian IBP Report 12, Tartu,
117-130.
Nilson, T. 1978. Mathematical
modelling of the radiation regime in plant canopies.
In: Abstracts of 6th Conference of All-Union Botanical Society, Kishineu, 12-17 September 1978, Nauka,
Leningrad, 270-271 (in Russian)
Kuusk, A., Mullamaa,
Yu.-A., Niilisk, H., Nilson,
T., Sulev, M. 1978. The structure of the cloud cover in the trade-wind region on the
basis of ship measurements. GARP Atlantic Tropical
Experiment. Proceedings of the International scientific conference on the energetics of the tropical atmosphere (Tashkent, 14-21
September 1977), Geneva, WMO,155-160.
Nilson, T. 1977. A
theory of radiation penetration into nonhomogeneous
plant canopies. In: The Penetration of Solar Radiation into Plant
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