What is interception loss?
Interception loss is that portion. of the precipitation which is returned to the. atmosphere through evaporation from plant. surfaces or is absorbed into the plant.
How is canopy interception loss calculated?
Canopy interception loss is calculated as [Gross precipitation – (Throughfall + Stemflow)]. Litter interception loss is generally estimated by collecting litter from a plot of known area immediately before, after, and X days after a storm. The litter is weighed, dried, and weighed again.
What are the 3 types of interception?
Interception refers to precipitation that does not reach the soil, but is instead intercepted by the leaves, branches of plants and the forest floor. It occurs in the canopy (i.e. canopy interception), and in the forest floor or litter layer (i.e. forest floor interception).
How is rain interception calculated?
Interception storage was calculated as the difference between the total water applied and the net water collected, correcting for water retained by the equipment.
How is interception measured?
Interception measurements Interception is most easily measured by comparing rainfall underneath vegetation cover (like a woodland canopy) with rainfall where there in no vegatation cover. Place several identical rain gauges in the contrasting areas – don’t just use one rain gauge per area.
What is the process of interception?
Interception refers to all processes that prevent rainfall from immediately reaching the soil. Vegetation intercepts water in two ways: by catching rainfall on leaf surfaces throughout the canopy, and through the litter that it deposits on the ground.
What is interception PDF?
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.
What are the instruments used in measuring interception?
Interception is most easily measured by comparing rainfall underneath vegetation cover (like a woodland canopy) with rainfall where there in no vegatation cover. Place several identical rain gauges in the contrasting areas – don’t just use one rain gauge per area.
What are the factors affecting interception?
Factors Affecting Interception:
- (i) Type of Vegetation:
- (ii) Wind Velocity:
- (iii) Duration of Storm:
- (iv) Intensity of Storm:
- (v) Season of the Year:
- (vi) Climate of the Area:
What are 3 ways to measure precipitation?
Measuring rainfall can be is primarily done in three different ways using three different types of rain gauges. The three major types of rain gauges are the standard gauge, tipping bucket gauge and weighing gauge.
What are the 6 types of precipitation?
The different types of precipitation are:
- Rain. Most commonly observed, drops larger than drizzle (0.02 inch / 0.5 mm or more) are considered rain.
- Drizzle. Fairly uniform precipitation composed exclusively of fine drops very close together.
- Ice Pellets (Sleet)
- Hail.
- Small Hail (Snow Pellets)
- Snow.
- Snow Grains.
- Ice Crystals.
What are the 9 ways to measure precipitation?
Methods of Measurement of Precipitation (Rainfall)
- Measurement of Rainfall Using Raingauges. Non-recording Raingauge. Recording Rain Gauges.
- Selection of Rain Gauge Stations. Rainfall Measurements by Radar.
What are the factors that affect interception?
Since the interception affects the distribution of rainfall or snowfall and subsequent run-off, it is necessary to understand the factors which affect 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.
Why does interception rate increase during summer season?
During summer or dry season the interception rate is quite high because of high evaporation. Summer interception is 2 to 3 times more than the winter season interception. In arid and semiarid regions due to prevailing dry conditions the interception loss is more than that occurring in humid regions.
What is the interception of precipitation?
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.
How much of the annual precipitation is intercepted by forest cover?
It is estimated that a dense forest cover intercepts about 10 to 25% of the annual precipitation. The amount of water intercepted is greatly variable and depends on many things. Since the interception affects the distribution of rainfall or snowfall and subsequent run-off, it is necessary to understand the factors which affect interception.