rainforest

thats not my title, its a question i need answering beacsue i know:

Very vunerable as it has closed cycles and if trees are cut down the soil is very vunerable to fire etc,.

if the trees are cut down, the roots are removed in which made the soil very stable, without the roots,( and upper canopy) they are exposed to the harsh rain in its full impact and are easily washed away. There are MORE rain in the equator than anywhere else in the world- this causes a lot of disturbance to soils in which isnt protected and isnt held together anymore. This washes away the nutrients. And no trees/bushes/any biological matter = very hard to get nutrients into the ground so soils are furhter exhausted by people who try to farm on deforesated lands. And causes desertification in which the soil turns to desert.

CLOSED CYCLE. Only way to get the land back to its full producitivty is to add tons and tons of nutrients back into the ground.


And why the term equatorial is included in there? Almost all rainforests are at the equator..that just implies why rainforests in the equator are more vulnerable than the rainforests which isnt at the equator...stupid.,

Mmmm but the question is why it's vulnerable to human activity - i.e. why would humans want to impact upon it in the first place.

Yes, a rainforest, when disturbed, goes out of "equilibrium" (itself of course an outmoded concept wrt biospheres) very quickly because the soil is nutrient-poor (as you say, excessive leeching) and relies on the litter layer above which without trees dropping litter swiftly vanishes.....BUT you can point to disequilibrium problems in pretty much any biosphere, even if some are more resilient than others - the thing that really distinguishes them is to what extent they are impacted by humans in the first place - why and how much humans want to come along and interfere/cut them down.

That would be my take on the question, anyway...