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The answer is in the question. Fire must be harmful to them. Pine trees, and other conifers have high levels of substances called turpines in their leaves. This serves two maior purposes, to make them taste foul (few animals graze on pine leaves) and to act as a kind of anti-freeze, so the leaves work all year round, even in subarctic conditions.
However, turpines are highly flammable, so pine saplings will rarely survive a grassland fire. The saplings don't survive on the grassland and the trees don't encroach.
What else can I help you with?
What kind of trees are in grasslands?
Grasslands typically have trees such as oak, pine, and cottonwood. These trees are often found along rivers, streams, and in areas where there is enough water to support their growth amidst the grassy landscape.
How much oxygen do pine trees produce?
Pine trees produce approximately 260 pounds of oxygen per year.
Do pine trees have leafs?
No, Pine Trees have pine needles, not leaves
Do you cones grow in pine trees or ash trees?
Pine trees of course!
What is a pine plantation?
A plantation (area of trees) of pine trees
Do pine trees grow in the rain-forest?
No, there is only pine trees in pine forests. I think?
Is cherry wood man made?
Natural, Pine comes from pine trees and trees grow naturally!
How much should you charge to plant 2000 pine trees?
$700
Do any pine trees have flowers before pine cones?
no, pine trees are gymnosperms and only produce cones, never flowers
What is the pH pine trees?
4 to 6 is the pH of pine trees
Why is Maine's nickname the pine tree state?
It is called the Pine Tree State because it has a LOT of pine trees.
Are pine trees found in the woodlands?
Yes, pine trees can be found in the woodlands.
