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The pin-point method (or point-intercept method) is used for non-destructive measurements of plant cover and plant biomass. [1] [2] In a pin-point analysis, a frame (or a transect) with a fixed grid pattern is placed above the vegetation. A pin is inserted vertically through one of the grid points into the vegetation and will typically touch a ...
Stem profile measurement Electronic equipment (as Field-Map for example) is used for stem profile measurements and for measurements of profiles/projections of the crown. These key measurements are used for estimation of carbon sequestered in the plants. Forest structure measurement is needed for establishment of allometric equations.
Biomass partitioning is the process by which plants divide their energy among their leaves, stems, roots, and reproductive parts.These four main components of the plant have important morphological roles: leaves take in CO 2 and energy from the sun to create carbon compounds, stems grow above competitors to reach sunlight, roots absorb water and mineral nutrients from the soil while anchoring ...
Changes in plant species in the terrestrial ecosystem can result in changes in the biomass of soil decomposer communities. [13] Biomass in C 3 and C 4 plant species can change in response to altered concentrations of CO 2. [14] C 3 plant species have been observed to increase in biomass in response to increasing concentrations of CO 2 of up to ...
Because an increased biomass implies higher respiration per surface unit and a limited increase in intercepted light, crop growth is a sigmoid function of crop biomass. Plant production distribution – Usually only a fraction of the total plant biomass consists of useful products, e.g. the seeds in pulses and cereals, the tubers in potato and ...
A next level of analysis is to measure the growth allocation: what is the increase in total biomass of a plant, and to what extent is the increase due to growth of leaves, of stems and of roots. In young plants, growth allocation is often quite similar to the actual biomass allocation.
Measurement of tree circumference, the tape calibrated to show diameter, at breast height, making sure that the tape is perfectly level and that the tape is not kinked, so as not to skew the reading of the diameter. Diameter at breast height, or DBH, is a standard method of expressing the diameter of the trunk or bole of a standing tree.
Biomass (in the context of energy generation) is matter from recently living (but now dead) organisms which is used for bioenergy production. There are variations in how such biomass for energy is defined, e.g. only from plants, [8] or from plants and algae, [9] or from plants and animals. [10]
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