Standing deadwood usually includes trees that are dead but not yet fallen to the ground and thus are part of the vegetation. The trees may have died because of disease or physical damage. Standing deadwood could be a key carbon pool in older forests and plantations but unlikely to be so in young plantations, cropland and grassland development projects. The method adopted for estimating standing deadwood is identical to that used for estimating above-ground biomass. The key steps in estimation of the stock of deadwood at a given time are as follows (based on steps given in Chapter 10):
Step 1: Select and stratify the land-use category or project activity for which the deadwood has to be estimated. Step 2: Decide on the sampling method including sample size, number of sample plots and sampling design, used for estimating the above-ground tree biomass of trees.
Step 3: Select the sample plots identified for above-ground biomass and use the same plots.
Step 4: Assemble the material required for field study, namely:
° Measuring tape for recording diameter and height, rope and pegs for marking the plot, a balance for weighing fresh wood samples, a cotton bag for storing samples, and a knife for cutting litter
Step 5: Identify the parameters to be measured and recorded:
° DBH and height
° The status of the dead and standing trees, based on expert judgement
- Tree with crown, branches and twigs but without leaves
- Tree without crown and branches
- Tree stump (with a short stem)
° Wood density
- Measure fresh weight, dry weight and volume of the sample wood block
Step 6: Record these parameters together with those for live above-ground biomass:
° A suggested format for recording field data on dead and standing trees is shown below (in addition to location, land-use category or project activity, plot size and number, GPS reading, date and name of the investigator).
Tree Tree Tree Status* DBH(cm) Height(m)
Quqdrat species number number
*Tree with crown, branches and twigs: tree without crown and branches; tree stump
Step 7:Calculate the biomass using methods given in Chapter 17. The method for calculating the biomass stock of dead and standing trees is identical to that used for estimating above-ground biomass.
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What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.