What is interception in rainfall?

Introduction. Rainfall interception is the fraction of rain that falls onto vegetation but never reaches the ground, instead evaporating from the wet canopy.

What is interception and transpiration?

We conclude that interception mainly works as an intensifier of the local hydrological cycle during wet spells and wet seasons. On the other hand, transpiration remains active during dry spells and dry seasons and is transported over much larger distances downwind, where it can act as a significant source of moisture.

What is interception in plants?

Interception is the process by which falling precipitation interacts with the vegetation covering a watershed. The result of this interaction is dependent upon vegetation and precipitation characteristics. Several things can happen to precipitation as it falls on a rangeland watershed: 1.

What is interception in GEO?

Interception – this is when precipitation lands on buildings, vegetation and concrete before it reaches the soil. Interception storage is only temporary as it is often quickly evaporated.

What are the main components of interception?

There are three Main Components of Interception:

• Interception Loss.
• Throughfall.
• Stemflow.

What is horizontal interception?

horizontal interception represents an additional input of water to coastal forests. thus interception loss from live vegetation usually represents a net loss to the basin hydrological cycle, so logging tends to increase runoff by reducing interception loss and transpiration.

Why is interception important?

Overall, we can conclude that interception has different roles in the hydrological cycle. The most important role is as a rainfall reducer, causing a significant amount of rainfall to be directly fed back to the atmosphere which is not available for infiltration.

Is interception a transfer?

Water that has been intercepted by foliage may also be transferred, either directly as throughfall, or by running down branches and stems via stemflow.

Why is interception important in the water cycle?

What affects interception?

Interception varies with the species, its age and density of stands. About 10 to 20\% of precipitation occurring in the growing season is intercepted. It is lost substantially by way of evaporation from leaves. In dense tall vegetation interception is quite substantial.

What are the factors affecting interception?

We confirmed the factors affecting interception loss by using an interception model based on the tank model. The artificial forest simulations provide new evidence that interception loss is influenced by the PAI, rainfall intensity, saturation deficit, and wind speed.

What is secondary interception?

• Plant community structure – secondary interception occurs in stratified forest communities where water drips from the canopy and is intercepted by lower plants.

What is interception in the hydrologic cycle?

hydrologic cycle. This process is termed interception and may result in little water reaching the ground because the water may be directly evaporated from plant surfaces back into the atmosphere. If precipitation reaches the ground in the form of snow, it may remain there for some time.

What is the meaning of interception in geography?

Answer Wiki. Interception, also known as canopy interception, is the process by which the precipitation is caught by the leaves and branches of trees and vegetation (the canopy). The volume of water caught by the canopy is referred to as interception.

What is interception of rainfall?

Gerrits, A.M.J. Interception is the part of the rainfall that is intercepted by the earth’s surface and which subsequently evaporates. In this definition the earth’s surface includes everything that becomes wet after a rainfall event and that dries out soon after. It includes: vegetation, soil surface, litter, build-up surface, etc.

How much does interinterception matter for the water balance?

Interception can amount up to 15-50\% of precipitation, which is a significant part of the water balance. One can distinguish many types of interception, which can also interplay with each other. For example canopy, forest floor, fog, snow, and urban interception. This study we focus on canopy and forest floor interception.