If this is a topic you’re interested in, a longer explanation is in the article I wrote in February as Hubby had a great time taking photos.(http://www.southdadenewsleader.com/news/fire-benefits-the-parks/article_17ea9962-4913-11ea-9026-2b599f2e6e26.html)
Daddy was a forester for many years, although he didn’t start with the Louisiana Forestry Commission until I was maybe six. That particular job was running a pine tree nursery which was pretty cool to see as a kid. I don’t recall how many acres, but there were thousands – perhaps tens of thousands of seedlings planted. They were harvested at different stages of maturity for reforestation. After that was the move to Natchitoches where we stayed from when I in the latter part of the fourth grade into college. I may have previously posted about the house we lived in. It was small, but functional and provided by the Forestry Commission as it was on the property. The head guy chose to live in a larger private house instead. Having acres of pine seedlings was one thing, having a 120-foot fire tower next to you was something different.
Anyway, the purpose of towers is of course to keep watch, especially during “fire season”. That was generally summer with dry conditions and winds. That part of Louisiana is heavily wooded, particularly with pine, and between carelessness (never mind the year of an arsonist) and lightening strikes there were always fires. The point is, during the rest of the year, there would be controlled burns planned and executed to clear out undergrowth and dead trees. The reason is straightforward. Both of those forest elements function as “tinder” when set ablaze. The greater the amount, the larger the fire which then spreads to mature trees. The “controlled” burn is exactly what it sounds like. Firefighters and equipment are set up to ignite and manage a burn in one section before moving to another. (Sectioning allows time for the forest creatures to move out of the way). There are strict rules to follow as to how large an area is to be burned at any one time and the other major factor is wind. Burns are not initiated when the wind is above a certain level. Once a burn is completed, it takes a short period for new growth to begin.