How trees are responsible for Rain.Actually their roots suck ground water &evaporate it by leaves large area?
The large surface area of leaves with exposure to sun is best radiator to make the water to evaporate. can group of large trees cause condensation in the clouds by causing local cooling causing rain fall? As rain fall is still random in any country. How one can seggragate the influence of trees on the rain fall?
- Anonymous1 decade agoFavorite Answer
General note on trees
our consumption of water is ever increasing and our drinkable water supply is shrinking because of polution ,and the production of potable water is less all the time because of deforestation.
the forrests make most of the water that we can drink or use for plant growth(sweet water)
some is condensed from the sea but that reaches only the coastel aereas .
the bulk however,comes from the forests who feed the rivers and keep them running all year round,with their excess subteranean water,and from the rainfall which also comes from the trees .the trees condense water from the atmosphere in the night with the surfaces of the leaves,this feeds the rivers after the tree has had enough the excess moves on to subteranean water,
on the other hand in the day water that is brought up by the roots and that is within the foilage evaporate and creates clouds the dust from the leaves seeds the clouds and rain is the results
this process is called precipitation
If we kill all the trees,we kill the rivers .we kill the rain. we kill us.
the trees also absorb the heat in the day and heat up the place in the night ,so they keep the temperature confertable to live in.
desertification is also a result of bad agricultural methods and deforrestation
in the dessert the nights are freezing cold and during the days you burn up
the saharaa is growing by 7 kilometres every day.
two major desserts in northern china are growing together making one giant dessert and,causing dust storms so making thousands of people refugeese
the trees evaporate a mist which ,which protects us from the strong rays of the sun .
in the days of the dinasaurs this planet was under an aquiferus manta ,a mist that covered the entire earth ,and there were no desserts .
Count how many there are today,and all of them are as a result of mans actions.
the sahara used to be forrests
arabia ,irak ,iran used to be fertile lands in biblical times
Ghengas Kahn burned all the forrests here and filled the well with water and so turning vast lands into dessert.
Modern agriculture today is doing the same as ghengas kahn but in much bigger territories.
these are some of the reasons why trees are important.
so to counter act these fatal processes we must reforrest and at the same time reduce our carbon emissions.
most governments are aware of these and many first world countries now include programs to reduce their carbon emissions.
the world bank pays large subsidies for farmers to plant trees especially a tree called Pawlomia because it is one of the better ones that capture carbon.
In the sierras in Mexico in Guerrero we are planting Pawlonia to capture carbon and the World bank gives large subsidies for that,
also coffee is the most recomended bush because it lives beneath the trees ,and forrests are created intead of destroyed for agricultural reasons.
En la region Montaña(parte alta) de Guerrero, los productores siembran un arbol llamado Cuajinicuil, este arbol es de muy rápido crecimiento, se clasica dentro de la familia de las leguminosas por lo que es un exelente fijador de nitrogeno. El arbol es utilizado con exelentes resltados para la sombra del café, además su fruto (vaina) es comestible pues sus semillas estan cuviertas de un material fibroso y muy dulce. Sus semillas son utilizadas tambien como alimento para lo cual estas deben pasar por un proceso de cocimiento (hervidas). La cascara de la vaina se utiliza para alimento del ganado. (Es Arbol perene)
so plant a tree every week,and help us save the worldSource(s): Source(s) read a planet under stress ,plan B --by Lester E Brown. it is in an Adobe print out as well on the net.
- MarieLv 44 years ago
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Trees do NOT get water to their leaves using cappilary action alone. Cappilary action could lift water to maybe 10 metres maximum. The tallest trees are over 8 times that height. Cappilary action plays only a small, albeit vital, role in lifting water in trees. The simple answer is that the tree uses the equivalent of a siphon effect to lift the water. A siphon works because water is cohesive, IOW water sticks to water. That cohesiveness of water in a siphon tube means that as water at one end falls it is able to suck more water up from the other end. Provided that the fall is greater than the rise you are trying to overcome you can use a siphon to lift water to significant heights. A tree trunk is basically composed of masses of siphon tubes filled with water, but it doesn't have any physical 'fall' component. Instead what the tree uses is the force generated by evaporation. As water enters a leaf it is exposed to the air and allowed to evaporate. Because water is cohesive that loss of water creates a negative pressure that pulls more water into the leaf within the leaf, and that in turn creates a negative pressure that pulls water into the vessel elements of the branch and the trunk. That pressure is sufficiently high to lift water to the tops of the tallest trees. Which is why trees use such massive quantities of water. Even a small tree will use over 100 litres of water a day and less than 1% of that will be used physiologically. The rest is simply evaporated off to draw more water up the stem. It's an incredibly wasteful process. This is also the reason why trees in dry environments are invariably shorter than plants in wetter environments. Because the system functions like a siphon the water column in the trunk can never be allowed to break or the pressure inside will immediately drop to zero. It's like getting vapour lock in a fuel line and plants can't re-prime the line. There has to always be sufficient water in the ground to feed the negative pressure required in the column. The taller the tree the greater pressure required and hence the more water required. As a result the maximum height of tree is determined in large part by the amount of water available.
- 1 decade ago
They seem to help it to rain by cooling the area so that the condensation is formed by the heating-cooling factor. But also I recall an experiement where someone was putting plastic trees in a desert and it was helping to producce rain.
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- Anonymous6 years ago
Large area of trees, increased rain.
- Anonymous1 decade ago
I think the "rainforests" are a good example. Large area of trees, increased rain.