Soil heat flux and temperature variation with vegetation, soil type and climate

Oliver, Sylvia A.; Oliver, H. R.; Wallace, Jim; Roberts, Anne M.

doi:10.1016/0168-1923(87)90042-6

Cited by 73 publications

(46 citation statements)

References 7 publications

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“…Therefore, our results confirm the findings (Coufal et al, 1993) that even weather stations with kept lawns do not represent the same conditions for soil temperature measurement because of the variations in the structure, height, and density of the lawn. Similar results concerning the influence of vegetation on the minimum temperature are presented by Oliver et al (1987) and Sándor and Fodor (2012).…”

Section: Discussionsupporting

confidence: 73%

Semi-stationary measurement as a tool to refine understanding of the soil temperature spatial variability

Lehnert¹,

Vysoudil²,

Kladivo³

2015

International Agrophysics

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A b s t r a c t. Using data obtained by soil temperature measurement at stations in the Metropolitan Station Network in Olomouc, extensive semi-stationary measurement was implemented to study the spatial variability of the soil temperature. With the development of the research and computer technology, the study of the temperature is not limited by the complexity of the processes determining the soil temperature, but by the lack of spatial data. This study presents simple semi-stationary soil temperature measurement methods, which can contribute to the study of the spatial variability of soil temperature. By semi-stationary measurement, it is possible to determine the average soil temperature with high accuracy and the minimum soil temperature with sufficient accuracy at a depth of 20 cm. It was proven that the spatial variability of the minimum soil temperature under grass at a depth of 20 cm can reach up to several degrees Celsius at the regional level, more than 1°C at the local level, and tenths of °C at the sublocal level. Consequently, the standard stationary measurement of the soil temperature can be regarded as representative only for a very limited area. Semi-stationary soil temperature measurement is, therefore, an important tool for further development of soil temperature research.

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Section: Discussionsupporting

confidence: 73%

Semi-stationary measurement as a tool to refine understanding of the soil temperature spatial variability

Lehnert¹,

Vysoudil²,

Kladivo³

2015

International Agrophysics

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“…Even without burning, the reduction in vegetative cover in the weed-free treatments over untreated plots at both Bonanza Creek and Fort Richardson may have increased summer soil temperatures [21,29,34], as well as reduced competition. Previous studies from Canada [1,16,39] have reported increases in summer soil temperatures of 1 to 5 °C at depths of 15 cm or less after removal of vegetation.…”

Section: Discussionmentioning

confidence: 99%

Effects of competing vegetation on juvenile white spruce (Picea glauca (Moench) Voss) growth in Alaska

2003

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-We examined the impacts of competing vegetation on survival and juvenile growth of white spruce (Picea glauca (Moench) Voss) on 3 units in south-central Alaska and on 3 units in interior Alaska. Treatments consisted of herbicide site preparation and release treatments, and also included a treatment in which competition was minimized for 5 years (weed-free treatment). At all units, the weed-free treatment resulted in significant increases in white spruce height and basal diameter by ages 10 or 11 compared to untreated plots. Average heights and diameters in the weed-free treatments were 1.5 to 3.8 times and 2.0 to 3.8 times those in the untreated plots, respectively. Results from the other treatments differed by unit based on the efficacy of a particular treatment on the vegetation at that unit. For all units, regression equations indicated a significant decrease in diameter at year 10 or 11 with increasing competitive cover and overtopping.

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“…Forest floor and mineral soil temperatures respond to the influences of incoming solar radiation and surface characteristics (Oliver et al 1987). Mineral soil temperature generally decreases with increasing density of vegetation and canopy cover and increasing soil moisture content (Oliver et al 1987;Balisky and Burton 1995).…”

Section: Forest Floor Temperaturementioning

confidence: 99%

Spacial patterns of soil temperature and moisture across subalpine forest-clearcut edges in the southern interior of British Columbia

Redding¹,

Hope²,

Fortin³

et al. 2003

Can. J. Soil. Sci.

101

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To investigate if timber harvesting influences spatial patterns of soil microclimate, forest floor soil temperature and moisture were examined across forest-clearcut edges. Transects were sampled during the 2000 growing season across a 1-ha clearcut at a subalpine forest site in the southern interior of British Columbia, Canada. Forest floor temperature measurements were made twice, once under sunny and once under overcast conditions. Moisture status, measured under wet and dry conditions, was expressed as gravimetric and volumetric moisture content and matric potential. Wavelet analysis was used to detect and compare the location of edges in soil properties, and variance partitioning was used to examine the environmental and spatial sources of variability in temperature and moisture. Based on the wavelet analyses, the transition zone, in both temperature and moisture between forest and clearcut occurred at 7-15 m into the clearcut from the south edge and at 8-18 m into the forest from the north edge. Spatial patterns were consistent between clear and overcast conditions and wet and dry conditions. Distance from the edge was a minor source of spatial variability in temperature and moisture relative to the strong contrast between forest and clearcut conditions. The edge influences may have implications for nutrient cycling, plant available water and forest regeneration. Can. J. Soil Sci. 83: 121-130. Les auteurs ont étudié l'incidence de la zone de transition entre les secteurs coupés à blanc et la forêt sur la température et la teneur en eau du sol forestier afin d'établir si la récolte du bois modifie le profil spatial du microclimat tellurique. Durant la période végétative de 2000, ils ont donc prélevé des échantillons le long de transects dans une zone de coupe à blanc d'un hectare, en bordure d'une forêt subalpine de l'intérieur sud de la Colombie-Britannique, au Canada. La température du sol a été relevée quand il faisait soleil et lorsque le ciel était nuageux, alors que la teneur en eau a été mesurée par temps sec et humide et exprimée en unités gravimétriques et volumétriques ainsi qu'en fonction de la baisse du potentiel hydrique du sol (potentiel matrique). L'analyse des ondelettes a permis de déceler et de comparer les endroits où les propriétés du sol changent. Par ailleurs, les auteurs ont recouru à la séparation des variances pour établir l'origine spatiale ou environnementale des fluctuations de température et de teneur en eau. Selon l'analyse des ondelettes, la zone de transition entre la forêt et les secteurs coupés à blanc pour la température et l'eau s'étend de 7 à 15 m dans le secteur déboisé, au sud de la lisière de la forêt, jusqu'à 8 à 18 m à l'intérieur de la forêt, au nord de sa bordure. Les profils spatiaux sont cohérents, que le ciel soit dégagé ou couvert et le sol, sec ou humide. La distance de part et d'autre du bord de la forêt n'entraîne qu'une faible variation spatiale de la température et de la teneur en eau, comparativement au fort contraste qui existe entre les conditions rele...

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Soil heat flux and temperature variation with vegetation, soil type and climate

Cited by 73 publications

References 7 publications

Semi-stationary measurement as a tool to refine understanding of the soil temperature spatial variability

Semi-stationary measurement as a tool to refine understanding of the soil temperature spatial variability

Effects of competing vegetation on juvenile white spruce (Picea glauca (Moench) Voss) growth in Alaska

Spacial patterns of soil temperature and moisture across subalpine forest-clearcut edges in the southern interior of British Columbia

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