The phrase "amount per area" is correct and usable in written English.
It can be used in contexts where you are discussing density, concentration, or distribution of a quantity over a specific area.
Example: "The amount per area of pollutants in the water has increased significantly this year."
Alternatives: "density per unit area" or "concentration per area".
The relationship between volume erosion amount per area of the specimens and erosion time can be explained by two exponential equations ΔV="−5.2t2+10.4t and ΔV="−0.006t2+0.273t+4.884 in two stages.
Note that rainfall is a flux quantity (amount per area per time) dependent on horizontal and temporal scales (such as the hourly, daily, monthly, and annual rainfall measured by a single-station rain gauge, in a radar-observed area, and over an integrated region) and that it fluctuates greatly because individually short-lived small precipitating clouds are organized into multiple scale structures.
The data indicate that transpiration within regional buffers uses a disproportionate amount of water on a per area basis compared to upland land covers, an important consideration when examining overall water consumption in regional watersheds.
Salt precipitation amount per unit area increases and then gradually becomes stable with the increase of soaking time.
In the initial extraction stage, similar extracted amount per surface area indicated that thin-film samplers could mimic the behavior of worms for passive sampling.
Fcad molar amount per surface area was twentyfive times higher on high-swelling compared to low-swelling films, but differences became smaller when large ALP (appr. 2 1) were employed.
This was confirmed by the foulant amount per unit area results as well as by visual inspection and SEM and EDX (Table 3; Figs. 14, 15, 16, 17, 18, 19), indicating faster fouling rates on membranes during online salt cleaning.
After a plot has been selected in the sample, measurements are made of the individuals in the plot to determine a stand value (an amount per unit area) of the variable of interest being measured in the inventory (the 'target' variable).
Having longer wires enables the storage of larger amount of charge per area (areal capacity), while larger anode areas represent larger amounts of active material and thus higher total capacities.
The Northeastern states have the least amount of emissions per area: Vermont, Rhode Island, Maine, and New Hampshire all have an average annual fire emission of <1 metric ton CO2 km-2.
Concentrations of substances are higher in runoff collected from vertical surfaces compared to horizontal ones, whereas the leached amounts per surface area are higher from horizontal surfaces.
