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Pine Trees
Pine trees are conifers. They are often grown commercially for timber. Pine trees have a long life span, sometimes up to 1,000 years old.
734 Questions
What are some environmental issues with pine trees?
Rather than being a global warming solution, pine trees may be inducing smog and acid rain by releasing vast amounts of nitrogen oxide into the air, researchers have discovered.
Under some circumstances, needles from Scots pine trees can release nitrogen oxides directly into the atmosphere, according to a report in today's issue of the journal, Nature.
A team led by Professor Pertti Hari of the University of Helsinki in Finland, conducted experiments with new pine shoots from Pinus sylvestris, measuring the amount of nitrogen oxides they emitted when exposed to sunlight.
Nitrogen oxides (NOx), along with hydrocarbon gases and sunlight, are the three ingredients needed to make photochemical smog that clogs the skies of many urban centres, as well as acid rain.
The researchers were surprised to find NOx produced by the pine needles, and that levels rose when shoots were exposed to ultraviolet radiation from the Sun. While the amount produced was insignificant on a local scale, "our findings suggest that global NOx from boreal coniferous forests may be comparable to those produced by worldwide industrial and traffic sources," said the authors.
Other scientists were cautious. "I would like to see a more qualitative estimate of how significant that might be in comparison to all the other sources of nitrogen oxide in the atmosphere," said Associate Professor David Griffith of the atmospheric chemistry research group at Australia's University of Wollongong.
While the gases produced by pine trees could in theory deliver as much air pollution as worldwide industrial emissions, in reality most trees do not grow in air that has the very low background levels of nitrogen oxides needed for the trees to emit NOx in the first place.
"If there are already nitrogen oxides in the air, there will be a net uptake, they will be taken up by the trees," he told ABC Science Online.
The study did show for the first time that forests can produce two of the three critical ingredients for smog, and it had been previously established that trees produce hydrocarbons. "No-one has recognised before that they also produce the nitrogen oxides," said Griffith. "Once you put both those ingredients together you can form photochemical smog."
But the amount of nitrous oxides required for this to happen are in the order of tens of parts per billion, and the research has only found levels of one to three parts per billion, he said.
"What I can't judge is how significant this would be globally," he added. "It's going to be a local effect. Nitrogen oxides don't have a long lifetime in the atmosphere." By comparison, nitrous oxides have a very long lifetime, and can spread all over the world.
Australia does not have a lot of boreal or 'needle tree' - forests, because they tend to exist in high latitude areas. But the findings could be relevant on a local scale in Australian pine plantations, Griffith said.
Large scale planting of pine trees to act as 'carbon sinks' has been promoted by some, the theory being that fast-growing trees absorb and retain carbon dioxide from the air. Carbon dioxide is widely cited one of the major contributors to global warming.
Do pine trees grow in arid areas?
yes, pine can grow in arid areas only if intense care is provided. you can grow may be 1 or 2 trees, but if u want to establish a whole plantation, it is not possible because the climate of arid areas do not favor pine trees.
Are pine trees vascular or nonvascular?
Pine trees are vascular plants because these have well defined xylem and phloem tissues.
When do pine cones fall off the trees in MI?
In Michigan, pine cones typically fall off trees in late summer to early fall, around late August to October. The timing can vary depending on the specific species of pine and local weather conditions. Once the cones mature, they release seeds and fall to the ground, contributing to the forest floor's ecosystem. Some pine species can retain their cones for longer periods, even through winter.
What is the average weight of a 25 year old pine tree in nz?
The weight of a pine is estimated by calculating the board footage of the tree. To do this it is necessary to have the length and circumference of the logs. To find the weight, one will need to multiply the diameter of the small end of the log by the length of the log. This is then multiplied by 0.37. 50.93 is added to this total. This results on the predicted weight in pounds. There are many factors, such as moisture content, that can affect these numbers.
Should I keep the fallen pine needles around the pine trees or rake them up?
Leave em. They provide insulation in the winter and the perfect compost material for the tree. Delivering pine specific nutrients back to the plant. So they may not b to aopealing to the eyes but to the tree they r perfect nutrients for recycling.
It's very true. I run a fence business in Dallas and Houston that has been around for 25 yrs. and we always add at least $15 a hole that has roots in it. They will tear up your digging machine and take, sometimes, up to 4 times as much work to dig the normal hole free of debris.
Why do pine trees live longer than oak trees?
Pine trees do not normally live longer than oak trees although the Bristlecone Pine is the oldest recorded living tree so this is questionably.
What characteristic does algae have in common with moss fern pine tree and hibiscus?
The all have the ability to live on land.
Why is a pine tree considered to be more similar to the hibiscus plant than to a fern?
Gymnosperms, such as pine trees, and angiosperms, such as hibiscus, both sport an important evolutionary feature that ferns do not. Gymnosperms and angiosperms both make seeds through sexual reproduction, while ferns produce spores through a type of asexual reproduction. (the latin word sperma means seed.)
If you cut a piece oak tree and put it in water will it last longer than a pine tree?
no pine trees last long
How much are pine wardrobes and where do they sell them?
pine wardrobes are available at major stores including jc penny, or at your local consignment store, prices vary based on weather your looking for a new or used wardrobe and also vary depending on where your looking. different states are priced differently. on average $200 - $1000 new.
When does a bristlecone pine tree start adding another ring?
When Earth's Northern Hemisphere is tilted toward the sun
What part of a pine tree do you start fires with?
Its called fat lighter. Its where a pine tree has had an accident or injury of a sort and uses sap to heal this area. The result is a piece of the tree that is saturated with rosin. This is split or cut up and used to start fires because of all the stored energy (sap) and burns hot for a long time.
An oak tree is 6 times as old as a pine tree and an elm tree is 6 years younger than the oak tree. In 3 years, the age of the elm will be 3 times the age of the pine. How old is the oak tree now?
Why should you use pine wood in technology?
The reason that a person should always use pine wood in technology is because pine wood is very strong and lasts a long time before it starts rotting.
Why are pine trees called evergreen?
Because the tree is green all year round; it does not lose its leaves in the fall.
Does a daisy belong in the same main plant group as a pine tree?
They are both tracheophytes (meaning they have vascular tissue, xylem and phloem), however, a pine tree is a gymnosperm and a daisy is an angiosperm.
Can you grow a five needle pine cutting?
The short answer...yes! Although it is fairly difficult because of the sap flow. If growing pines by cutting take a heel cutting use a little bit of root hormone(not required) and cross your fingers when growing plants from cuttings anywhere from 0-100% success can occur.
