Indicator E9. Annual and period removals calculated by area and/or volume prescribed
Consultant's Initials: |
LL, LI, BH |
Source: |
CCFM |
Identification No. in source: Use all refs: |
5.1.1 |
Class: |
Forest manage-ment planning and policy |
Recommendation (after field testing) Yes or no |
Yes |
Revised Indicator Suggested? # |
Combined with CIFOR 3.2.3 |
Box A:
Principle Yield and Quality of Forest Goods are Sustainable
Criterion- Forest management provides for sustainability of goods and services.
Indicator Annual removal of forest products relative to the volume of removals determined to be sustainable.
Rewritten Indicator Annual and period removals calculated by area and/or volume prescribed.
Box B: Definition:
Definition from CCFM:
The allowable use of forest products determined to be sustainable will dictate the maximum allowable harvest of forest products. A wide variety of products are extracted including timber, fuelwood, pelts, big game, fish, food (mushrooms, berries), and a range of botanical medicines and craft materials.
The harvest rate for timber is determined by annual allowable cuts (AACs), which dictate the maximum volume of timber that can be harvested annually from an area over a period of time. AACs do not include timber in parks, wilderness areas or other type of reserves.
A fully regulated forest that produces an even flow of timber forever. The benefits of forest regulations are:
CIFOR information: Brief Definition:
Yield regulation is the calculation that may be harvested, annually or periodically, from a specific area over a stated period, in accordance with the objects of management.
Box C: Attributes
Rated on a scale of 1-5, where 1=no/bad/unimportant and 5=yes/good/important
Precisely defined? (clear) |
4 |
Useable? |
5 |
||||||
Is it applicable to other areas/ecosystems? (robust) |
5 |
||||||||
Sensitive? |
4 |
||||||||
Easy to detect, record and interpret? |
4 |
||||||||
Is it applicable to all landowners? |
|||||||||
Yes |
x |
||||||||
No |
|||||||||
Box D: Applicability to Different Landowners. Explain any differences:
N/A
Box E: Overlap:
CIFOR: 3.2.3 1.1.1 3.4.1 3.4.2 2.4.4 2.4.5
Box F: Geo-Political Scale:
Global |
||
North America |
||
Intermountain |
||
West |
||
Study area |
X |
|
Tenure |
X |
|
Site |
Box G: Indicator Characteristics:
Diagnostic |
X |
|
Predictive |
||
Both |
Notes:
Measurements of annual harvest of forest products provides a diagnostic measure. The comparison of removal rates (drain) against the volume determined to be sustainable, provides a measure of current sustainability. Predictive trends can be determined by making projections into the future.
Box H: Indicator Function:
Structure |
||
Function/Process |
||
Composition |
||
Perturbation |
||
| Not Applicable | X |
Notes: NA; Structure, function and composition are ecological parameters
Box I: Underlying Concepts:
Balancing inputs and outputs of biological systems is necessary to maintain energy flows.
Box J: Relevance to Sustainable/Unsustainable Management:
Multiple resource values are correlated with measures of the forest resource. For example, forest stand characteristics are used as a measure of wildlife habitat quality and quantity. Therefore measurements of the forest resource provide insightful information about other forest benefits.
This indicator is relevant because it provides a tool for achieving an evenflow of forest commodities including fiber production and all other ammenities.
Box K: Measurement Methods:
Forest Inventories and Fish and Game Inventories of big game species provide baseline information for comparison to determine sustainabilty. Through continuous reevaluation of the resource inventories management adjustments can be made to balance the system.
Box L: Data Required:
Box M: Data Used for the North American Test:
Box N: Example Results:
Table II-9 in page II-37 of "Land and resource management plan for the Boise National Forest", provides a glimpse of the ten-year trend of the timber offered (AACs), sold and harvested from 1978 to 1989 at Boise NF
YEAR |
VOLUME OFFERED (AACs)-MMBF- |
VOLUME SOLD - MMBF- |
VOLUME HARVESTED-MMBF- |
1977 |
92.7 |
83.4 |
148.3 |
1978 |
103.6 |
98.5 |
93.2 |
1979 |
100.2 |
76.7 |
128.3 |
1980 |
98.5 |
64.6 |
72.5 |
1981 |
76.5 |
56.5 |
69.1 |
1982 |
101.5 |
66.0 |
45.8 |
1983 |
90.4 |
47.0 |
62.5 |
1984 |
92.7 |
77.0 |
44.6 |
1985 |
75.7 |
59.7 |
90.4 |
1986 |
92.3 |
88.0 |
71.8 |
1987 |
78.4 |
54.1 |
100.4 |
1988 |
91.6 |
69.6 |
99.4 |
1989 |
86.5 |
85.4 |
80.4 |
13 year average |
90.8 |
71.3 |
85.1 |

**Average from 1988 through 1996
Reference: Preliminary Analysis of the Management Situation, Southwest Idaho Ecogroup Forest Plan Revision, 1997,

Reference:
Preliminary Analysis of the Management Situation, Southwest Idaho Ecogroup Forest Plan Revision, 1997,


Box O: Assessing the Practicality:
Yes, this indicator can be tracked over time as shown by the years of data available. Since it is being done on a regular basis, this is not costly or difficult. Private ownerships may consider this data confidential in nature.
Box P: Assessing the Information Value:
Yes; As managers make comparisons of the annual harvest of forest products with allowable levels, they can determine whether they should reduce the harvest or if they can increase it.
Box Q: Overall assessment:
Accepted
Because it is a direct measure of performance against the plan of sustainable removals.
Strength; information is generally available.
Weakness; The influence of natural disturbance like wildfires must be considered. Example; salvage efforts following a large fire would cause a short term increase in harvest removals, therefore this criteria needs to be used within the context of the "big picture" of the forest.
Regulation analysis considers only the portions of the forested ecosystem included in timber yield calculations; for example in the North American study area only 24% of the area is included in the yield calculation. Therefore it can be risky to draw conclusions about the whole ecosystem based on data and management prescriptions for only a small portion of the system.
Box R: Did you rewrite or revise to a new indicator. If so what?
Yes, to combine ideas included in CIFOR 3.2.3.
Box S: References:
Department of the Interior, Bureau of Indians Affairs, National Archives of Records Administration. 1996. Timber management plans. pp 1.
Further reading (from CIFOR Source):
Appendix:
Please record your notes on evaluating the indicator here:
Detecting & recording of total harvests of game animals may not be accurate due to illegal harvest activities.
Harvests of all forest products that do not match or at least come close to their sustainable levels can, in time, lead to unsustainable conditions. In forests, tree density and composition will change through time resulting in greater susceptibility to fire and outbreaks of insect and/or diseases. Animal populations react in a similar fashion. As examples, the bison in Yellowstone National Park have not been regulated and populations have increased beyond the carrying capacity of the winter range within the park. As a consequence, the animals migrate out of the park where they come in contact and conflict with local cattle operations. Since the bison are suspected of carrying brucillosis, they are often killed to minimize losses to cattle ranchers.
For countries other than the USA or Canada, this indicator may not be sensitive because of the potential for the forest management unit under consideration not to be "regulated" in a management sense.