The distribution of animals and plants and the main cause of behavioral effects - light intensity

The distribution of animals and plants and the main cause of behavioral effects - light intensity

The influence of light intensity in the environment is relatively large. It not only affects the synthesis of organic matter of plants, but also affects the change of organisms. The measurement of the light intensity in the environment generally uses photosynthetic active radiometers and optical quantum meters. The measurement instrument to measure, the following simple to understand the impact of light intensity.

First, light intensity and aquatic plants. The penetrability of light limits the distribution of plants in the ocean. Only in the euphotic zone of the ocean surface, the photosynthesis of plants can be greater than the amount of breathing. In the lower part of the translucent zone, the photosynthesis amount of the plant just balances the respiratory depletion of the plant, which is the so-called compensation point. If the planktonic algae in the ocean settles below the compensation point or is carried by ocean currents below the compensation point and cannot be quickly returned to the surface, these algae will die.

Second, light intensity and terrestrial plants. Accepting a certain amount of light is a necessary condition for the plant to obtain net production, because the plant must produce enough sugars to make up for respiratory losses. The process of photosynthesis in plants is the process of absorbing carbon dioxide and water while simultaneously synthesizing organic substances and releasing oxygen. He is also affected by the light intensity in the environment. Those affected by the light intensity are those of the Xiyang plant, and the impact is small. It is a shade plant, such as ginseng, Panax pseudoginseng, Pinellia, and Asarum.

Third, light intensity and animal behavior. Light is an important ecological factor that affects animal behavior. Many animal activities have a close relationship with light intensity. There are some animals that are active under daylight conditions, such as birds, and many of them are also out at night for activities such as owls. The time that animals start to move each day under natural conditions is often determined by the light intensity. When the light intensity rises to a certain level (little animals) or to a certain level (nocturnal animals), they begin the day's activity.

It is now used to measure light intensity and make appropriate changes. This kind of behavior is more often used by agro-pastoral breeders. Changes in the light intensity of the environment are not yet carried out, but before the changes are made to the environment. The light intensity is measured. At this time, many of them will use photosynthetically active radiometers and light quantum meters to measure and then regulate. This effect will be even better.