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Перевод: savanna

[существительное]
саванна

Тезаурус:

1. Savanna regions occupy c. 20 per cent of the earth's land surface, comprising some 23 107sup6; km located between the equatorial rainforests and the mid-latitude arid and semi-arid deserts.
2. For example, Tarrant (1987) has shown that while world cereal yields are increasing, those for Africa are actually declining and exhibit increased annual variability especially in semi-arid regions like the savanna.
3. There have been a plethora of studies at varying scales, which is a reflection of the Sahel zone's extension some 6000 km from the Atlantic to the Red Sea (Fig. 7.1) as a transition zone between the Sahara Desert and the Acacia- dominated savanna lands to the south.
4. SAVANNA REGIONS
5. Scott (1987), for example, has examined the impact of more frequent clearance that is now being practised by the Campa Indians in the Gran Pajonal area of central Peru, where primary and secondary forest is interspersed with savanna and grassland.
6. Savanna regions outside Africa have also experienced development problems that have resulted in environmental change.
7. In consequence, the latter are impelled to maintain their livestock in dry savanna lands all year round.
8. Here, in common with the Llanos area of the Orinoco basin in Venezuela, the vegetation comprises cerrados which M M Cole (1986) defines as savanna woodland.
9. Where there is seasonal flooding or irrigation, as in West Africa, rice is cultivated - and specialised cash cropping is increasing in the savanna zone as a whole.
10. Grazing pressures have also altered the savanna environment of India, as has been discussed by Gadgil and Meher-Homji (1985) in relation to the Deccan plateau which is the most degraded of India's savanna lands.
11. A big one was the sea's equivalent of the savanna lion or jungle tiger.
12. Clearance of semi-arid savanna, coupled with overgrazing and friable soils, has resulted in annual degradation rates of between 1 and 10 mm per year, the higher rates occurring on overgrazed slopes.
13. The most rapid rates of deforestation are occurring in the tropical rainforest regions, but deforestation is also significant in the savanna woodlands that occupy the drier tropical and subtropical regions.