Population - Natural increase as a component of population change
Population - Demographic Transition
Population - Population-resource relationships
Alles voor dit studieboek
(37)
Geschreven voor
A/AS Level
CIE
Geography
Unit 1 - Core Geography (9696)
Alle documenten voor dit vak (66)
Verkoper
Volgen
danielperea-milla
Voorbeeld van de inhoud
1.1: The drainage basin system
hydrological cycle: interaction between atmosphere, lithosphere and
biosphere
drainage basin system: open system which allows movement of
energy and mass through its borders
Outputs
evaporation: liquid into gas, most important in oceans.
- increases in warm, dry conditions and decreases in cold, calm
conditions.
- losses are greater in arid and semi-arid climates than in polar
regions.
- factors affecting rate:
● meteorological factors: temperature, humidity and wind
speed.
● water availability
● vegetation cover
● colour of surface
evapotranspiration: process by which water escapes from a living plant
(stomata or surface of leaf) and enters the atmosphere.
- represents most important aspect of water loss
- pure evaporative losses occur over ice, snow fields, rock slopes,
desert areas, water surfaces and bare soil.
- factors affecting rate:
● factors affecting evaporation
● plant adaptations: cacti reduce water loss.
potential evapotranspiration: difference lies in concept of moisture
availability; water loss that would occur if there was an unlimited supply
of water in soil for the use of vegetation.
river discharge: movement of water in channels.
- may enter river directly as precipitation or by surface runoff,
groundwater flow or throughflow.
, Stores
interception: water that is caught and stored by vegetation. increases
rate of infiltration. Three main components:
- vegetation storage: water retained by plant surfaces , later
evaporated away or absorbed by a plant - varies with plant type
- throughfall: water that either falls through gaps in vegetation or
drops from leaves
- stemflow: water that trickles along twigs and branches, and finally
down the trunk
less from grasses than from woodland - smaller surface area of grass.
increases with crop density.
soil water: subsurface water in the soil and subsurface layers above
water table. water may be:
- absorbed
- held
- transmitted downwards → water table
- transmitted upwards → soil surface and atmosphere.
coarse-textured soils: much of water is held and fairly large pores at low
suctions.
- field capacity: the amount of water held in the soil before
saturation.
- wilting point: range of moisture content in which permanent wilting
of plants occurs.
Seasonal variations in soil moisture budgets:
- soil moisture deficit: degree to which soil moisture falls below field
capacity. Soil moisture deficit is very low during late winter and
early spring in temperate areas due to high levels of precipitation.
- soil moisture recharge: occurs when precipitation exceeds
potential EVT - some refilling of water in the dried-up pores of the
soil.
Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
Verzekerd van kwaliteit door reviews
Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!
Snel en makkelijk kopen
Je betaalt supersnel en eenmalig met iDeal, creditcard of Stuvia-tegoed voor de samenvatting. Zonder lidmaatschap.
Focus op de essentie
Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper danielperea-milla. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €3,70. Je zit daarna nergens aan vast.