Mathematical modeling of heat transfer in plant community
Journal Title: Журнал ÑтреÑÑ-физиологии и биохимии - Year 2011, Vol 7, Issue 4
Abstract
The conductive, convective and radiation heat exchange process in a natural system including plants aggregation, air lower layer and ground upper layer, is examined. The mathematical model of process is formulated in 1d unsteady approach. The numerical simulation of plants aggregation cooling is performed for the case of a radiation frost. It is found up that mutual influence of plants in an aggregation on the heat exchange with environment grows with the increase of plants size and plants number per ground area. The influence leads to that lower parts of plants are cooled slower, while upper parts are cooled faster. The estimations are made for the quantity of heat emitted in a thermogenic plant that is enough to prevent the plant cold stress. It is shown that in presence of enforced air flow the rate of plants cooling is noticeably lower, as well as the quantity of heat enough to prevent the plant cold stress.
Authors and Affiliations
K. Finnikov, A. Korzun
Relation Between Frost-Resistance of Winter Grains, Their Respiration Rate and Water – Soluble Carbohydrates Content in Autumn - Spring Period
The content of water-soluble carbohydrates and respiration rate in the crown tissue of winter wheat, rye and triticale in autumn – winter – spring were studied. In the period and of winter significant differences were...
Temperature Stress and Consequences of its Influence on Functional Activity of Mitochondria in Maize Etiolated Seedlings
Treatments of 30-min influences of high (32, 37, 42, 47, 52 °С) and low (0, 17, 22 °С) temperatures on viability of shoots, common activity of peroxidase, content of reactive oxygen species (ROS), intactness and oxidativ...
Nature Relation Between Climatic Variables and Cotton Production
This study investigated the effect of climatic variables on flower and boll production and retention in cotton ([i]Gossypium barbadense[/i]). Also, this study investigated the relationship between climatic factors and pr...
АГРОБАКТЕРИАЛЬНАЯ ТРАНСФОРМАЦИЯ КАК КОМПЛЕКСНЫЙ БИОТИЧЕСКИЙ СТРЕССИРУЮЩИЙ ФАКТОР
Обсуждаются концептуальные особенности исследования последствий агробактериальной трансформации, которые имеют большое сходство с известными в физиологии стрессовыми ответами. Это позволяет рассматривать агробактериал...
The effects of Leptin on gastric ulcer due to physical and psychological stress: Involvement of nitric oxide and prostaglandin E2
The present study aimed to assess the effects of Leptin on physical and psychological stresses inducing gastric ulcer. The potential role of endogenous nitric oxide (NO) and prostaglandin E2 (PGE2) in the effects of Lept...