On the Measurement of the Radiant Temperature of Vegetation Surfaces and Leaves

Stoutjesdijk, Ph.

doi:10.1111/j.1438-8677.1966.tb00025.x

Cited by 9 publications

(7 citation statements)

References 5 publications

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“…The measurements were made with a radiometer measuring the heat radiation emitted by a surface, and thus indirectly the surface temperature (STOUTJESDIJK 1966). The instrument measures the mean temperature of a surface.…”

Section: Methodsmentioning

confidence: 99%

“…How much higher is difficult to estimate. Over Dutch heaths we found that at 2 m height the air temperature was about 2°C higher than over grassland in the neighbourhood (STOUTJESDIJK 1959). An upper limit of the effect on the fjell is probably given by the observation that when a cloud shades the surface the air temperature suddenly drops by about 5°C.…”

Section: Vegetation Temperatures Above the Timber Line In Norwaymentioning

confidence: 95%

“…In an earlier paper (STOUTJESDIJK 1966) it was shown that in a low mosaic vegetation like a dune grassland, surface temperatures of soil and vegetation can differ greatly from one point to another, or, in other words, that the mosaiclike diversity shown by the vegetation cover is reflected in the temperature pattern. These differences are due to differences in vegetation structure, water economy, and small-scale exposure effects of the patches.…”

Section: Introductionmentioning

confidence: 97%

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A Note on Vegetation Temperatures Above the Timber Line in Southern Norway

Stoutjesdijk¹

1970

Acta Botanica Neerlandica

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Surface temperatures of dwarf shrubs and other components of Norwegian fjell vegetation were measured with an infrared thermometer of simple construction.With strong solar radiation, temperatures varied between 2°C (cold spring) and 63°C (ant hill). Dwarf shrubs like Loiseleuria had temperatures up to 20°C above air temperature.From heat budget considerations the conclusion is drawn that the fjell vegetation transpires rather slowly and transforms most of the absorbed energy into heat.The possible importance of the high vegetation temperatures is discussed.

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Section: Methodsmentioning

confidence: 99%

Section: Vegetation Temperatures Above the Timber Line In Norwaymentioning

confidence: 95%

Section: Introductionmentioning

confidence: 97%

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A Note on Vegetation Temperatures Above the Timber Line in Southern Norway

Stoutjesdijk¹

1970

Acta Botanica Neerlandica

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“…Leaf temperature was measured with a 'Stoutjesdijk' infrared radiometer (Stoutjesdijk, 1966). Leaf temperature was measured with a 'Stoutjesdijk' infrared radiometer (Stoutjesdijk, 1966).…”

Section: Photoperiodmentioning

confidence: 99%

An ecophysiological approach to crop losses exemplified in the system wheat, leaf rust and glume blotch

Wal

Cowan

1974

Netherlands Journal of Plant Pathology

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A climate chamber experiment is reported in which were investigated the growth and transpiration of uninfected wheat plants (C), plants infected with either Puceinia recondita (leaf rust) alone (R), Septoria nodorum (glume blotch) alone (S), or with both pathogens together (I). The rust inoculation was at the 75 ~ heading stage, and was followed four days later by the glume blotch inoculation; re-infection was prevented. Effects of disease on axial development were not observed. The rate of total dry weight increase of the plants was reduced in S and I, mainly because of smaller dry weight increase of the heads. Kernel weight and kernel number in I were lower than in C, R, and S. Stems in S and I were shorter than those in C and R, and their weights were lower. Rapid root deterioration was observed in I. The transpiration was greater in R than in C, in S smaller. Transpiration in I was initially equal to that in R, but the transpiration rate decreased rapidly after the glume blotch symptoms became visible. The increase in the percentage of infection by rust in I was lower than in R, and the sporulation came almost to a stop soon after the appearance of glume blotch flecks. The percentage of infection by glume blotch in I increased faster than in S. Regression equations for growth and transpiration are given.Neth. J. Pl. Path. 80 (1974) Addresses Laboratorium voor Fytopathologie, Landbouwhogeschool, Binnenhaven 9, Wageningen, the Netherlands.

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“…In earlier papers we have given examples of the great horizontal diversity of the microclimate, using surface temperatures as the characteristic parameter (Stoutjesdijk, 1966(Stoutjesdijk, , 1970(Stoutjesdijk, , 1977. In this paper an attempt is made to give a survey of the range of temperature and humidity conditions that can be observed simultaneously on a bright summer day within a restricted area.…”

Section: Introductionmentioning

confidence: 99%

The range of micrometeorological diversity in the biological environment

Stoutjesdijk

1980

Int J Biometeorol

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ABSTRACT. --The range of temperature and humidity conditions that can exist simultaneously at or near the ground surface on a bright summer day in a temperate climate are shown in a diagl-am. Cool and warm conditions are defined as having respectively a lower and a higher temperature than the air at a height of 1.50 m above the surface of the ground. Similarly, humid and dry conditions are defined by a lower and a higher saturation deficit (S.D.), respectively. Coot, humid conditions are found in the open shade where only diffuse solar radiation is received. In high reed vegetations on wet soil, temperatures can lie 8°C below that of the free atmosphere and humidity is close to the saturation point. Warm and humid conditions are found in thin vegetations on damp soil with a temperature excess of up to 10°C and a strongly reduced S.D. In dry grassland, air temperatures 1 cm above the ground are up to 20°C higher and S.D. up to 40 mm Hg higher than at a height of 1.50 m. On suitably oriented slopes covered with dark organic material, surface temperatures can reach 50 ° C above the air temperature.

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On the Measurement of the Radiant Temperature of Vegetation Surfaces and Leaves

Cited by 9 publications

References 5 publications

A Note on Vegetation Temperatures Above the Timber Line in Southern Norway

A Note on Vegetation Temperatures Above the Timber Line in Southern Norway

An ecophysiological approach to crop losses exemplified in the system wheat, leaf rust and glume blotch

The range of micrometeorological diversity in the biological environment

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