climate changes is a reality and some of the best evidence come from mountain areas over the last century glaciers in european alps and caucasus have shrunk to half thier size while in africa only 8% of the kenya`s largest glacier remains if current trends continue by the end of these century all the world`s glaciers will vanish including the natiaonal glacier park in the united state
millions if not billions of people depends directly or indirectly on these natural water storage facilities for drinking water agriculture.
mountain are early indicators of climate changes many climatologist believe that the changes occuring in mountain ecosystem provide an early glimpse of what may come to pass in lowland enviroments. for these reason it is vital that the biological and physicol compoment of a mountain should be strictly monitored and studied.
people living in most areas of the mountain are use to the fact that climate changes in mountain are from year to year,mounth to mounth,day to day at different aititude and even on slope with different exposure.in future climate changes may increase climate variability beyond the limits of past experince most critical and extreme events are likely to become more common and more intence in mountain area.
the melting of glaciers may provide more water for both mountain people and those living downstream.but as the glacier disappear and snowlines move upward river flows are likely to change and lack of water may become an increasing problem higher temperature will mean more rain than snow,raising the risk of flooding of both mountain and lowlands farmers.
the trend will also affect hydropower generations,forestry and water dependent ecosystem such as wetlands.
climate changes may bring local and regional benefits in the mountain higher temperature may mean that trees produce higher yields of timber and that crops can be grown at higher altitude.
until recently economical,political or social changes such as globalization were taken to be the main drivers of changes of mountains. today it is increasingly that climate changes and it consequences are likely to have similar or even greater impacts. as a result there is a is a growing body of adaptive action relative to the climate changes on mountains.these include tecnological measures such as prevention of glaciers lake in the himalaya orsafeguards against slope instability due to permafrost decay in the alps and northern europe.
adaptation willhave to be supported by mitigation measures that addresses the root causes of climate changes:the emission of green houses and other substances that may cause global warning.key issue are the reduction of of these emissions and h improvements of energy efficiency.promision recents action include
-the promotion of energy saving building in the alps
_the developement of emission-free energy production such as medium size or micro-hydropower as promoted in indian china and nepal
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