Another Ecology Question?

Question

What are the effects of Man on the ecosystem with emphasis on examples of international importance (tropical rain forests, oceans, important rivers)

Answer 1

Mans effects on the environment

CAN DEFORESTATION BE STOPPED

Almost impossible

the Indians or local people would cut everything down and burn the forrest to replace it with harmfull short term farming killing the soil in no time

expanding populations and expanding farming ,that has to keep pace with the expanding populations are very strong forces that encroach upon the rainforest's

clearing them for farming and settlement areas .

that and the giant networks of roads that have exchanged forests for asphalt all over the planet

In Mexico is a famous jungle that the Media has been trying to save for years

the Naturists ,and the government ,keep watch .laws are made for protection the wild and to forbid logging.

TV put out a series of documentaries

there are campaigns in the News papers

and all of this has not made the slightest difference

Rainforest's always are in third world countries and always in third world countries corruption and the need for money s highest

the jungles gets smaller by the day

more and more farmers move in .and burn the trees

it is an impossible situation

as long as there is poverty and an increasing birth rate in these regions the destruction will continue

they are too easily tempted to sell of exotic animals to the unscroupelous people who buy them.for the markets that exists

Deforestation occurs in many countries in fact everywhere where there are or where forrests and wild life:

in Africa (because of poverty and war as well as greedy farming )

Borneo because of the expensive timber

india ,China ,Mexico ,South Americas Amazonia,

Europe because of civilization,USA,Japan because of overpopulation,

Madagascar a botanic paradise is now destroyed

the exotic animals sold or killed ,the forest slash and burned for agriculture ,the coastal water poluted by topsoils washed fronm the denuded moutains by the rains.

we must look for ways to improve economic situations on the edges of Nature .

the only way to preserve the forrest is to devellop eco tourism under strict control that has limited acces ,and use the local people in the concept as guides ,hotel staff and get them to start home industries of artifacts .

eco tourism is the only concept that profits by a healthy back ground with out harming it

AIR POLUTION

now with the mass deforrestation(decrease in bio mass)coupled to the increase in carbon emissions,industrial chimneys,aerosol cans,motor cars,burning of plastics and tires to name but a few ,the carbon production by far exeeds what the bio-mass and the waters can handle,and so effect into global warming and the destruction of the ozone layers,

WATER POLUTION

in Mexico( but similar happens in many countries )acidic coffee husks are dumped into the rivers that kill many fish,gravel beds that are breeding grounds for shrimp and fish are removed to be used for concrete.millions of women do their washing in the rivers with harmfull detergents ,

sewage systems all lead into the waterways ,

and agro chemicals get washed into the rivers by the rains because f the deforestation and the lands dry out making the top soil vulnareble to wind and water erosian

SOIL POLUTION,

Mono cultures using vast quanties of the same specie exhaust the soil because the plants all require the same chemicals from the soil

and contaminate the soil because all have the same chemical output,

on top of that herbicdes and pesticides and fertilizers are used which kill the normal micro organisms that build soil under organic circumstances

the original ploughing does this as well by opening the top soil and letting the sun kill the micro organisms

DESERTIFICATION

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 sahara 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

IN THE PAST

in the days of the dinosaurs this planet was under an aquiferus manta ,a mist that covered the entire earth ,and there were very few desserts .

Count how many there are today,and most 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.

the Spanish Armada deforested Spain

.the Phoenician fleet deforested Lebanon

REFORRESTATION

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 Paulownia elongate carolinia,because it is one of the better ones that capture carbon.

Answer 2

Its very simple MAN has ruined very thing he has and ever will touch !!