INFRARDEČA TERMOGRAFIJA PRI ODKRIVANJU VODNEGA STRESA V RASTLINAH

Povzetek

Plants and green islands in urban areas are one way to mitigate climate change and reduce the energy demand for air conditioning. Like humans, plants are also exposed to the urban heat island effect, which manifests itself in the fact that air temperatures in urban areas are on average 2-5°C higher than in rural areas. In addition, plants are exposed to water stress, which occurs when the amount of available water exceeds or falls short of the plants' water requirements. The paper presents an increase in electricity demand, with a special focus on Croatia, Slovenia and countries with similar electricity consumption. The effects of the urban heat island are illustrated using a graphical comparison from the recent literature. Infrared thermography, as one of the methods for detecting water stress, is explained with the physical background of long-wave radiation detection, and compared with near infrared digital photography. All possible aspects are presented of radiation detection that occur during thermographic analysis. A specific overview of water stress is given, and its effects are illustrated using examples of plant height and flower size. The application of infrared thermography in the detection of water stress is illustrated using thermograms of wheat in a dry field and after irrigation. On the basis of the presented information, a conclusion was drawn about the possibility of using infrared thermography in the detection of water stress