Multi-scale Forest Inventory and Modelling for Multi-purpose Management(<Special Issue>Multipurpose Forest Management)

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Forests provide many goods and services and the demands for quality information about forests are continuing to increase. These demands include detailed information about an increasing range of forest characteristics and resources - both wood and non-wood based - on small, nominated units of land. For example, Kyoto-type carbon credit schemes operating at a high tier, and therefore in the most valuable markets, require precise and unbiased estimation of carbon pools in forests at specific sub-hectare locations. Simultaneously, landscape-level management decisions, especially those related to biodiversity, may require information about stand characteristics and their spatial distribution over thousands of ha or km^2. Historical approaches for forest inventory were often classified into strategic/national, operational/regional or tactical/local scales to support management decisions at corresponding scales. However, recent trends of increased attention to the role of even individual forests in local and global economies and environments - evidenced by international conventions and agreements like the Montreal Agreement or Kyoto Protocol, and international monitoring of specific areas of deforestation and degradation - has reduced the usefulness of the strategic/operational/tactical separation. Strategic decisions made during international policy negotiations may significantly affect tactical or on ground decisions on specific forested lands, while conversely good but independent tactical decisions may put strategic management goals at risk. Disagreement amongst inventories at the various levels (e.g. where the sum of tactical inventories does not equal the strategic inventory) increases the probability for conflict between strategic and tactical management decisions. This paper summarises the framework used in the National Carbon Accounting System (NCAS) developed by the Commonwealth Government of Australia to support policy-development especially in relation to global climate change and forests. The framework allows for the integration of information captured through long-term satellite sensing, physiological and empirical modelling, field-based measurements and regional "text" information. Although policy-development is obviously at a "strategic" level, the framework is flexible enough to also provide information at sub-hectare levels and supports seamless tactical decision-making as well. The information provided supports Commonwealth policy development and this paper demonstrates how NCAS also provides valuable information for other management purposes ranging from tactical management of fuelwood and farm timbers at the scale of individual farm forests, through to landscape-level structural diversity and biodiversity management.
森林計画学会の論文

Multi-scale Forest Inventory and Modelling for Multi-purpose Management(<Special Issue>Multipurpose Forest Management)

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