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Plant density is defined as the number of plants present per unit area of ground. In nature, plant densities can be especially high when seeds present in a seed bank germinate after winter, or in a forest understory after a tree fall opens a gap in the canopy.
The soil bulk density of cultivated loam is about 1.1 to 1.4 g/cm 3 (for comparison water is 1.0 g/cm 3). [48] Contrary to particle density, soil bulk density is highly variable for a given soil, with a strong causal relationship with soil biological activity and management strategies. [49]
When stocking, a tree's basal area is measured. The basal area is a cross-sectional area of the stump taken about 4.5 feet (1.4 m) above the ground. [7] The equation for calculating the basal area of trees in a stand is Basal Area = 0.005454 DBH 2, where DBH is the diameter of the tree at the aforementioned measuring height. [7]
Population density (in agriculture: standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans , but sometimes to other living organisms too. It is a key geographical term.
A leaf area index (LAI) expresses the leaf area per unit ground or trunk surface area of a plant and is commonly used as an indicator of the growth rate of a plant. LAI is a complex variable that relates not only to the size of the canopy, but also to its density, and the angle at which leaves are oriented in relation to one another and to ...
The CDC ranked 41 of the powerhouse fruits and vegetables. Here's the least healthy fruit, plus how much of it you should eat, per a registered dietitian.
Specific leaf area is a ratio indicating how much leaf area a plant builds with a given amount of leaf biomass: S L A = A M L {\displaystyle SLA\ =\ {\frac {A}{M_{L}}}} where A is the area of a given leaf or all leaves of a plant, and M L is the dry mass of those leaves.
The crown density may be estimated using a Crown Density-Foliage Transparency Card. [11] [12] Using the card for reference the observer estimates what percentage of the light is being blocked by the crown mass. Estimates are made from two different directions at right angles and reconciled to determine crown density.