 | 458 páginas
Page 11 trend continues , 1.4 to 2.8 percent of existing agriculture , pasture , and forest land will be lost by 2020 . ... where water erosion could exacerbate poverty and food insecurity ; the highland areas of East Africa , where few ... | |
 | 8 páginas
... Nigeria ( 6 ) , Malaya ( 10 ) , India ( 4 ) , Asia and West and East Africa ( 5 ) . In all these countries , large areas of degraded forests and unproductive land have been converted into productive areas of valuable timber . | |
 | 34 páginas
But even if the lowest figure is accepted it is twice the amount lost in Asia and four times that in Africa . ... The most degraded areas are the densely populated foothills and highlands of Central America and the eastern slopes of the ... | |
 | 64 páginas
Tropical very dry forest - This formation of the tropical belt receives a mean annual rainfall of 500 1000 mm . , with a ... Grazing by goats is a major threat and degradation through abusive use has . been eloquently described by many ... | |
 | 20 páginas
The adjoining forests , however , support a very specialized fauna , giving evidence of antiquity and stability of forest ... The eastern llanos , many of which existed on account of Indian activity , before the Spaniards moved in ... | |
 | 338 páginas
... regions Region Tropical America Tropical Africa South East Asia India Cattle / humans 0.69 0.37 0.07 0.24 Pastures , ha . ... of being one of the greatest dangers to natural ecosystems ( forests , savannas , and hillsides ) . | |
| |