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ENERGY CROPS | Biomass Production Plant biomass is the weight of plant dry matter production dried to a constant moisture. It is usually measured on a plant or unit of land basis. Total biomass of a plant is closely related to the capacity for carbon assimilation of the plant.
The biomass is the mass of living biological organisms in a given area or ecosystem at a given time. … For other purposes, only biological tissues count, and teeth, bones and shells are excluded. In some applications, biomass is measured as the mass of organically bound carbon (C) that is present.
The calculation is defined as: ? biomass(net) = increase biomass(gross) – decrease biomass(gross). By subtracting the decrease in biomass from the gross increase in biomass, the net change in overall biomass for the specified time period is determined.
One way to measure biomass is to obtain the dry weight of an organism (since it is a rough approximation to the amount of biomass) and multiply it by the number of those organisms in a given area. The units are grams per meter squared (or cubed if it is an aquatic ecosystem). This is a commonly used method.
The method basically involves estimating the biomass per average tree of each diameter (diameter at breast height, dbh) class of the stand table, multiplying by the number of trees in the class, and summing across all classes.
Biomass can be measured for all types of vegetation and therefore comparisons can be made among different communities or ecosystems. … Biomass is considered a good measure of plant dominance on a site because it reflects the amount of sunlight, water and minerals a plant is able to capture and turn into plant mass.
The classical way to determine biomass concentration is to harvest a known aliquot of the culture suspension, separate cells by centrifugation, wash the ceils and dry them to constant weight at a few degrees above the boiling point of the solvent (usually 105°C).
You must calculate the percentage of your Dry Biomass, divide it by 100 and then multiply by the quantity of Wet Biomass that you have on a surface. Dry Biomass percentage = (Dry Biomass Weight / Wet Biomass Weight)*100.
Fish biomass is derived from the total number of fish counted in a specific area of water multiplied by the average weight of fish sampled (Harvey et al. 2003), which can be used to predict daily intake demand to avoid under- or overfeeding (Alver et al. 2005).
After field survey, the components of the sample trees are collected and immediately taken to the laboratory to determine the water content. Subsequently, the (total) biomass can be determined by multiplying the fresh weight by the dry/fresh weight ratio.
Plant biomass (W) is the weight of living plant material contained above and below a unit of ground surface area at a given point in time. Production is the biomass or weight of organic matter assimilated by a community or species per unit land area per unit time.
The monolith method is adopted for estimating root biomass below the depth of 30 cm and is mostly used in non-tree based land-use systems, such as grassland. The procedure involves cutting a monolith that is a large block of soil from a plot, separating the roots and weighing them.
To complete this calculation, we divide the amount from the higher trophic level by the amount from the lower trophic level and multiply by one hundred. That is, we divide the smaller number by the bigger one (and multiply by one hundred).
Algal biomass in a water body can be estimated in three ways: (1) by quantifying chlorophyll a (CHL a), (2) by measuring carbon biomass as ash-free dry mass (AFDM), or (3) by measuring the particulate organic carbon (POC) in a sample.
Shrimp biomass is the number of shrimp alive (Survival Rate/SR) times the weight of the shrimp (Mean Body Weight/MBW).
Generally, according to the recommendation of the research, a static pond system has maximum stocking capacity of 1.8kg of fish per meter square. Arithmetically, the calculation is simple: 2000 meter square of static pond water can carry 3,600kg of catfish.
Abundance and biomass estimates are metrics usually taken for phytoplankton assays. Biomass is a proxy measure today in phytoplankton assays, while relative abundance is broadly used in diatoms investigations and application of ecological indexes.
Biomass expansion factor The BEF was calculated as the average ratio between total dry weight and total stem weight of all harvested trees using Eq.
Determining the biomass of forests is a useful way of providing estimates of the quantity of these components. … Changes in forest biomass density are brought about by natural succession; human activities such as silviculture, harvesting, and degradation; and natural impacts by wildfire and climate change.
Average biomass allocation was 57.1% on stems, 21.3% on roots, 18.7% on branches, and 2.9% on foliage, which varied among the species examined.
- Agricultural residues. Crop residues include all sorts of agricultural waste such as straw, bagasse, stems, leaves, stalks, husks, pulp, shells, peels, etc. …
- Animal waste. Various animal wastes are suitable as sources of energy. …
- Forest residues. …
- Industrial wastes. …
- Solid waste and sewage.
There are many factors influencing plant biomass, such as soil humidity, soil and air temperature, photoperiod, solar radiation, precipitations, genotype e.t.c. One of the most important factors influencing biomass is soil nutrient availability.
Biomass currently supplies about 1.5% of the electricity demand, equal to 280 TWh (IEA, 2012). Today’s overall efficiency of biomass-based combined heat and power (CHP) plants for industry or district heating ranges from 70%-90% (IEA, 2012).
Definition: Below-Ground Biomass is one of seven key agriculture, forestry, and land-use carbon pools. It includes all living biomass of live roots. Fine roots of less than two mm diameter are often excluded because these often cannot be distinguished empirically from soil organic matter or litter.
Organic material both above-ground and below-ground, and both living and dead, e.g., trees, crops, grasses, tree litter, roots etc. Biomass includes above – and below – ground biomass. IPCC 2006 GL. Living plant and animal material both above-ground and below-ground (s.a.) usually expressed as dry weight.
Above ground biomass (AGB) is defined as “the aboveground standing dry mass of live or dead matter from tree or shrub (woody) life forms, expressed as a mass per unit area” , typically Mg ha–1. Urban trees can account for up to 97% of urban AGB .
Biomass, the contraction for biological IIIXS, is the amount of living material provided by a given area or volume of the earth’s surface, whether terrestrial or aquatic.