SOIL MANAGEMENT AND VEGETATION EFFECTS ON MEASURED AND ESTIMATED SOIL THERMAL REGIMES IN CANADA

1990 ◽  
Vol 70 (1) ◽  
pp. 61-71 ◽  
Author(s):  
H. N. HAYHOE ◽  
C. TARNOCAI ◽  
L. M. DWYER
Keyword(s):  
Soil Temperature ◽  
Temperature Regime ◽  
Soil Management ◽  
Soil Surface ◽  
Organic Layer ◽  
Thermal Regimes ◽  
Soil Temperatures ◽  
Soil Temperature Regime ◽  
The Mean ◽  
Mineral Soils

Observations at sites in British Columbia, the Yukon, Manitoba and Nova Scotia over a range of soils, managements and vegetation were used to assess variation in soil temperature. The annual soil temperature regime was compared with estimates derived from a macroclimate model which was developed for mineral soils that are level, well to moderately well drained, and covered by short grass. In general, this study showed the dampening effect of vegetation cover on soil temperature and suggested the further dampening effect of an organic layer on the soil surface. However, soil temperatures for cultivated and grass sites were not significantly different (P ≥ 0.05) from the estimates made using the macroclimate model. In contrast, forested sites had significantly (P ≤ 0.05) colder soil temperatures than those estimated by the model. The mean annual and mean summer 0.50 m soil temperatures were, respectively, 1.3 and 3.2 °C colder than the corresponding estimates. Key words: Soil thermal regimes, estimation of soil temperature, mean annual soil temperature

scholarly journals Soil temperature regimes in Finland

1998 ◽  
Vol 7 (4) ◽  
pp. 507-512 ◽  
Author(s):  
M. YLI-HALLA ◽  
D. MOKMA
Keyword(s):  
Soil Temperature ◽  
Temperature Regime ◽  
Soil Surface ◽  
Soil Classification ◽  
Soil Taxonomy ◽  
The North ◽  
Temperature Regimes ◽  
Soil Temperature Regime ◽  
The Mean ◽  
The Difference

Soil temperature regime substantially influences soil classification in Soil Taxonomy particularly in temperate areas. To facilitate correct classification of soils of Finland, the temperature regimes in soils of the country were determined. The mean annual soil temperature, measured at 50 cm below soil surface, ranged from 6.4°C at the warmest site (Anjala) to 1.9°C at the coldest one (Utsjoki, Kevo), and the mean summer soil temperature from 13.7°C to 6.2°C at the same stations, all being in the range of the cryic temperature regime. The mean annual soil temperature was 2 to 5°C higher than the mean annual air temperature, the difference (Y, °C) depending on the duration of snow coverage (X, days) according to the following equation: Y = 0.0305 X - 2.16, R2 = 0.91, n = 9. Even soils of the warmest areas in southern Finland and the mineral soils of the coldest areas in the north, at least for the most part, have cryic soil temperature regimes. Therefore, most soils of Finland, classified according to Soil Taxonomy, have names where the cryic temperature regime appears on the suborder or great group level.;

scholarly journals Soil temperature study in Puerto Rico

1969 ◽  
Vol 93 (3-4) ◽  
pp. 149-171
Author(s):  
Jorge L. Lugo-Camacho ◽  
Miguel A. Muñoz ◽  
Juan Pérez-Bolívar ◽  
Gregory R. Brannon
Keyword(s):  
Puerto Rico ◽  
Soil Moisture ◽  
Soil Temperature ◽  
Sea Level ◽  
Air Temperature ◽  
Temperature Regime ◽  
Soil Series ◽  
Soil Temperature Regime ◽  
The Mean ◽  
Mean Annual Air Temperature

Soil temperature measurements from a climate monitoring network in Puerto Rico were evaluated and the difference between mean summer and mean winter soil temperature, known as isotivity value, was calculated. Air and soil temperature was collected from five weather stations of the USDA-Natural Resources Conservation Service from sea level to 1,019 m above sea level and from different soil moisture regimes. Isotivity values ranged from 1.2 to 3.9° C with an average of 2.6° C. The 750-m elevation was identified as the limit between the isohyperthermic and isothermic soil temperature regimes in the perudic soil moisture regime in Puerto Rico. The greatest differences between mean annual soil temperature and mean annual air temperature were observed at Guánica, Combate and Guilarte (2.1 ° C) stations. The smallest differences were observed at Maricao (0.8° C) and Isabela (1.8° C) stations. The study also indicated that the mean annual soil temperature in Puerto Rico can be estimated by adding 1.8° C to the mean annual air temperature or by the equation y = -0.007x + 28.0° C. The equation indicates that 97 percent of the time the behavior of the mean annual soil temperature is a function of elevation. According to the updated soil temperature regime boundaries, eight soil series were established in the Soil Survey of San Germán Area. In an area under the isothermic soil temperature regime, four soil series were classified as Oxisols (Haploperox), two soil series as Inceptisols (Eutrudepts) and two soil series as Mollisols (Argiudolls). This is the first field recognition of the Haploperox soil great group in the United States and its territories.

scholarly journals Landscape-climatic features of the reforestation dynamics pyrogenically transformed geosystems of the Tunkinskaya depression

2021 ◽  
Vol 885 (1) ◽  
pp. 012042
Author(s):  
Zh V Atutova ◽  
N N Voropay ◽  
E S Shuklina
Keyword(s):  
Soil Temperature ◽  
Plant Communities ◽  
Temperature Regime ◽  
Forest Fires ◽  
Secondary Succession ◽  
Pine Forests ◽  
Soil Temperatures ◽  
Soil Temperature Regime ◽  
Climatic Features ◽  
Observation Period

Abstract In order to identify the features of the dynamics of the soil temperature regime during the post-fire restoration of the subtaiga light-coniferous geosystems of the Tunkinskaya depression, a study of the demutation processes in the pine forests of the Badar urochishche was conducted. Our research is based on the data of observations initiated after the fire that took place in 2010. The model key areas were selected at intact landscape complexes that did not experience pyrogenic influence, as well as the territory subjected to forest fires. Comparing the dominant composition of secondary succession biocenoses with natural plant communities in the background key area, indicators of the prospects for successful reforestation were identified. The analysis of 10-year data on the observation of the soil temperature regime from the surface to a depth of 3.2 m was carried out at the selected sites. The differences between the soil temperatures in the disturbed and natural sites, which vary during a year were revealed. During the observation period, a decrease in microclimatic differences was observed with the regeneration of vegetation cover, which indicates the restoration of the temperature regime in the pyrogenic-disturbed area.

Soil temperature regime and vulnerability due to extreme soil temperatures in Croatia

2015 ◽  
Vol 126 (1-2) ◽  
pp. 247-263 ◽  
Author(s):  
Petra Sviličić ◽  
Višnja Vučetić ◽  
Suzana Filić ◽  
Ante Smolić
Keyword(s):  
Soil Temperature ◽  
Temperature Regime ◽  
Soil Temperatures ◽  
Soil Temperature Regime

THE EFFECT OF ORCHARD SOIL MANAGEMENT ON SOIL TEMPERATURE AND APPLE TREE NUTRITION

1986 ◽  
Vol 66 (4) ◽  
pp. 701-711 ◽  
Author(s):  
G. H. NEILSEN ◽  
E. J. HOGUE ◽  
B. G. DROUGHT
Keyword(s):  
Soil Temperature ◽  
Extreme Temperature ◽  
Ground Cover ◽  
Soil Management ◽  
Research Station ◽  
Vegetation Control ◽  
Plastic Mulching ◽  
Soil Temperatures ◽  
Summer Maximum ◽  
Black Plastic

Soil temperature was measured from 1981 to 1985 at 0.2- and 1.0-m depths for four soil management treatments which included full ground cover, total vegetation control, shallow tillage and black plastic mulching in a high-density orchard planted to Bisbee Red Delicious (Malus domestica Borkh.) on Mailing 26 rootstock. Ground cover suppression treatments, especially black plastic mulching, increased degree day accumulations above 10 °C in all 5 yr at 0.2-m and in 3 yr at 1.0-m depths relative to full ground cover. However, these treatments also resulted in more extreme temperature fluctuations as characterized by higher summer maximum and lower winter minimum temperatures under black plastic mulching. Despite a potential for more extreme soil temperatures, apple yield was significantly higher under black plastic relative to full ground cover. For these two contrasting temperature treatments, leaf N and Mg concentrations were usually significantly higher under black plastic while leaf P and K were consistently higher and leaf Ca and Zn were occasionally higher under full ground cover. Most of these differences were, with the possible exception of leaf Zn, attributed to the competition for, or recycling of, nutrients by orchard floor vegetation. Mean monthly soil temperatures at the two depths under the four soil management treatments could be predicted by simple linear regression techniques from soil temperature measurements at the Summerland Research Station Meteorological Recording Site. Key words: Bisbee Delicious apples, degree days, ground cover, suppression, black plastic mulching, leaf nutrition

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