- Measuring tape
- Tree identification key
- Notebook etc.
Tree basal area is the cross sectional area of stem -tune of a tree at the height of the chest. A tree basal area actually refers to the ground penetrated by stems. So, the basal area of a tree is determined in terms of its stem circumference . Stem volume is also a function of basal area along with tree height shape and basic thickness since basal area is the area occupied by the tree stem , it may be regarded as an under dominance of a species.
A basal area of a tree is measured at breast type (usually 5.3 meter) from the ground surface.
The design flow is calculated by construction of flow duration curve.
THere are four types of hydropower:
- Runoff hydropower
- Storage hydropower
- Pumped hydropower
- Off share hydropower
Diagramatic representation of the warning schedule of hydropower.
P.E —-> K.E —> Mechanical energy —> Electrical energy
Rapti river has an average annual monthly mean discharge as shown.
Construct the flow duration curve.
- Determine flow(discharge) which can be expected 60% time of exceedence.
- Water is dependable of flow magnitude of 6m3/s.
|Months||Discharge||Discharge in descending order||Rank||% of time|
Q= 7.2 m3/s
H= 103 km
Hence, the hydropower potential in terms of water resources for a given river was measured.