North-North West,
You suggest technological advance allows timber to be harvested faster than ever before. This is undoubtedly true. Mechanised harvesters greatly improve efficiencies, as bulldozers and chainsaws did before them. However, overall harvest rates are not determined by the efficiency of machines, but by the principles of resource conservation. To use NSW as an example, the State has preserved around 7 million hectares within national parks. About 2.2 million ha of state forest remains available for the purposes of conservation (of which 1.9 million ha is native forest).
Only 1.64% of the total state forest area, or 36,080 ha, was harvested during 2010-2011. At this rate, to clear the entire forestry estate of timber, however an unlikely a proposition, mechanised harvesters would take almost 61 years to finish the job.
Over this time should we perhaps expect a little regrowth to replenish stocks? The NSW Forestry Corporation (a State Owned Corporation) certainly does. It provides forecasts of harvesting rates over a 100 year period:
http://www.forestrycorporation.com.au/_ ... 010-11.pdfClusterpod,
In NSW, and no doubt other states, forestry operations are inspected and audited both internally and by external bodies such as the EPA, NPWS, the Auditor General and ABARE, amongst others. They are also subject to great deal of public scrutiny. All forestry operations are covered by harvest plans and licensing arrangements. Sensitive areas may never be logged. Harvest plans are quite detailed:
http://www.forestrycorporation.com.au/m ... vest-plansGPS Guided,
Native forestry operations, as stated previously, are preferable to plantations. Plantations are monocultures, native forests coexist with a wide range of flora and fauna. To replace the native forests with plantation forestry would be a massive step backwards.
Pteropus,
Information on the size of the forestry estate is publicly available (see above). In regards to returns, from operating revenues of $310.3 million, the NSW Forestry Corporation returned a modest profit of $19 million dollars. The great majority of harvested timber is sawlogs with a relatively small volume destined for pulp or firewood. This is the situation now and is projected to remain so for the next 100 years.
While you may think it a bright idea to replace an industry such as forestry, that provides us with useful timber products and land for recreation and conservation, with one that produces little of value (such as a welfare scheme), you have not considered the costs involved in doing so. The management of the natural estate becomes an unfunded liability (on top of your welfare liability). No revenues with which to cover costs. Under your proposal the importation of vast quantities of timber to meet domestic consumption needs would also be required. From where do you suggest we source this. Borneo? Papua New Guinea? Brazil?
http://www.forestrycorporation.com.au/_ ... 012-13.pdfhttp://www.forestrycorporation.com.au/_ ... 012-13.pdfCheers.