The results of our analysis were also confirmed by the theoretical aspects presented below. We will present you a systemic approach to the meteorological impact of a forest based on the discoveries made by important climatologists and meteorologists . First, we should introduce some basic theoretical aspects of systems. Within a system, two types of mechanisms operate when a constraint is applied:
Negative feedback: the system tends to return to a state as close as possible to the initial one, limiting the constraint. For example, a small positive variation in the concentration of carbon dioxide in the atmosphere leads to an increase in the rate of photosynthesis. This leads to an intermediate concentration of gas in the atmosphere.
Positive feedback: the constraint generates an imbalance, thus perpetuating itself in the system. If the above variation is greater, the plants will be poisoned and the capacity of photosynthesis will be lost. Now there is no limitation of the level of gas in the atmosphere.
Beyond the simplistic examples above, such loops are able to provide a very good qualitative description of the Earth’s climate.
To sum up, the overall role of a forest for the environment could be characterized as “inertial”. Forests tend to reduce extreme weather consequences in the short term by acting as a heat sink and water supply for the environment. Moreover, by absorbing carbon dioxide forests oppose global warming. Given the chains above, it can be inferred that forests participate in vital negative feedback loops, while deforestation sets in motion positive feedback loops with a potentially destructive impact on the environment.
References: https://ec.europa.eu/environment/forests/pdf/EU_Forests_annex1.pdf