Sentences with phrase «vegetation zones»

Unfortunately this unique vegetation zone has been seriously threatened both by fire and introduced plants.

About one - third of the Sahel was projected to aridify with warming of 1.5 to 2 °C by about 2050, with a general equatorward shift of vegetation zones (van den Born et al., 2004; Box 4.2).

«If trees have access to a larger volume of soil, this promotes more wooded vegetation whereas shallower rooting, lower precipitation and fire promote less wooded, grass dominated vegetation zones.

Now Andrea Wulf brings the man and his achievements back into focus: his daring expeditions and investigation of wild environments around the world and his discoveries of similarities between climate and vegetation zones on different continents.

On the basis of these results, it seems that global warming accelerates the spread of plants, but it will not alone be sufficient to help plant populations to relocate to new vegetation zones.

These changes are well - represented in marine sediments and in paleontological records from the continents, where vegetation zones moved Equator - ward.

Students create an Arizona map with counties, county seats, mountain ranges, rivers, dams, climate areas, and vegetation zones.

The next morning we take a stiff hike in the lowest part of the vegetation zone of Mount Kenya.

«We know that some vegetation zones are moving northward, towards what were previously colder areas, but our ability to predict like down at the state level is not here yet,» Cicerone said.