1. A system of area measurement, notably that in which one (1) square foot is equal to 144 square inches or one (1) square meter is equal to 10,000 square centimeters. 2. A system of land surveying, mapping and measurement which uses the Gunter's or surveyor's chain as a base unit.

A unit of area measurement (square measure) that is one (1) meter long on each side. One (1) hectare of land contains 10,000 square meters. One (1) square meter is equal to 1.196 square yards or 10.764 square feet.

One (1) square meter is equal to 10.764 square feet. One (1) square meter is equal to 1.196 square yards. One (1) square meter is equal to 0.0395 square rods, poles, or perches. One (1) square meter is equal to 0.0025 square chains. One (1) square meter is equal to 0.001 roods. One (1) square meter is equal to 0.0003 arpents. One (1) square meter is equal to 0.00025 acres. One (1) square meter is equal to 0.0001 hectares. One (1) square meter is equal to 0.000001 square kilometers. One (1) hectare is equal to 10,000 square meters. One (1) square kilometer is equal to 1,000,000 square meters. One (1) square meter is equal to 10,000 square centimeters.

A unit of area measurement used in the English measurement and Government Rectangular Survey systems. One (1) square mile is equal to one section (1/36th) of a township, or 640 acres. See square mile equivalents or converting square miles for more conversions and equivalents.

One (1) square mile is equal to one (1) section of a township. One (1) square mile is equal to 640 acres. One (1) square mile is equal to 27,878,400 square feet. One (1) square mile is equal to 2.59 square kilometers. One (1) square mile is equal to 3,097,600 square yards. One (1) square mile is equal to 102,399.59 square rods, poles, or perches. One (1) square mile is equal to 6,399.9744 square chains. One (1) square mile is equal to 2,560.0 roods. One (1) square mile is equal to 757.5523 arpents. One (1) square mile is equal to 0.0278 (1/36th) townships. One (1) square mile is equal to 2,589,988.1103 square meters. One (1) square mile is equal to 258.9988 hectares.

A unit of area measurement (square measure) that is one (1) perch in length on each side. One (1) square perch is equal to 272.25 square feet, 0.0625 square chains, or 0.00625 acres. A square perch is also known as a square rod or square pole.

A unit of area measurement (square measure) that is one pole in length on each side. One (1) square pole is equal to 272.25 square feet, 0.0625 square chains, or 0.00625 acres. A square pole is also known as a square rod or square perch.

A unit of area measurement (square measure) that is one rod in length on each side. One (1) square rod is equal to 272.25 square feet, 0.0625 square chains, or 0.00625 acres. A square rod is also known as a square pole or square perch.

One (1) square rod, pole, or perch is equal to 272.25 square feet. One (1) square rod, pole, or perch is equal to 30.25 square yards. One (1) square rod, pole, or perch is equal to 0.0625 square chains. One (1) square rod, pole, or perch is equal to 0.025 roods. One (1) square rod, pole, or perch is equal to 0.0074 arpents. One (1) square rod, pole or perch is equal to 0.00625 acres. One (1) square rod, pole, or perch is equal to 25.293 square meters. One (1) square rod, pole, or perch is equal to 0.00253 hectares. One (1) square rod, pole, or perch is equal to 0.0000253 square kilometers. One (1) square rod, pole, or perch is equal to 0.00001 square miles or sections.

Unit of area measurement square measure that is one (1) yard in length on each side. One (1) square yard is equal to 0.836 square meters or 9.0 square feet.

One (1) square yard is equal to 0.8361 square meters. One (1) square yard is equal to 9.0 square feet. One (1) square yard is equal to 0.0331 square rods, poles, or perches. One (1) square yard is equal to 0.0021 square chains. One (1) square yard is equal to 0.0008 roods. One (1) square yard is equal to 0.00024 arpents. One (1) square yard is equal to 0.00021 acres. One (1) square yard is equal to 0.000084 hectares.

A contiguous group of trees that are similar enough in species composition, age class distribution, and site productivity or characteristics that it can be considered a single unit, regardless of size.

The stocking level of a stand of trees; the relative number of trees within a stand, usually expressed as trees per acre (TPA) or in terms of basal area (BA).

Complete and formal name of the mile, a U.S. and international unit of length equal to 5,280 feet (ft) or 1.6093 kilometers (km). For conversion factors and examples, see Mile equivalents and conversions or the various Converting miles to... entries.

Synonymous with stocking level.

A ratio comparing current stand density to an ideal or reference stand density (usually derived from yield tables), resulting in a stocking percentage (e.g., 75% stocked). Stands of trees may therefore be understocked, overstocked, or fully stocked according to these criteria. Also known as stocking.

A steady flow or current of water on the earth, such as a river, creek or brook.

Surface runoff that is confined to a stream or river channel.

The orderly progression of community change; the sequence of communities that replace one another in a given area culminating in a climax community.

Water that flows over the earth's surface; precipitation that falls to the earth, is not infiltrated, evaporated, or transpired, and exceeds the capacity of the soil or the vegetation to absorb it.

The process by which boundaries are measured and the locations or forms of land areas are determined; the on-site measurement of lot lines, dimensions, and position of structures on a lot including the determination of any existing encroachments or easements.

A common forestry and land survey term that is equivalent to 66 linear feet. Often referred to as simply "chain", this term is more formally known as the surveyor's or Gunter's chain. A chain is broken into 100 equal parts, or links. One (1) mile is equal to 80 chains. A one (1) mile square piece of land (one section or 640 acres) is 80 chains on each side. Although an engineer's or Ramsden's chain is also used to measure length in surveys, the generic term "chain" when used in reference to land measurements refers to the unit of length (66 feet) represented by the Gunter's or surveyor's chain. For more chain conversions, equivalents, and examples, see Chain equivalents and conversions or the various Converting chains to... examples.

Square measure system of land surveying, mapping and measurement which uses the Gunter's or surveyor's chain as a base unit.

Idea that resources should be developed and used to meet the needs of the present generation in a way that does not compromise the ability of future generations to satisfy their needs.

Generally, temperature decreases as elevation increases. For every 1,000 foot increase in elevation, temperature decreases three (3) degrees Fahrenheit, and vice versa. As latitude becomes more northward in the Northern Hemisphere and more southerly in the Southern Hemisphere, temperature decreases. The general rule is that temperature changes three (3) degrees Fahrenheit for every 300 mile change in latitude at an elevation of sea level. These temperature changes influence greatly the diversity and abundance of plant and animal species from place to place. However, other factors such as soil, topography, aspect, and precipitation are also extremely important in determining the types of plant and animal life that occur in any given area.