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Outputs and achievements

Benchmark sites | Establishment of multidisciplinary teams | Development of standard methods, procedures and protocols | Scientists trained in ASB research methods | Outputs and achievements

(1) Identification of the key constraints to agricultural production, environmental quality and sustainable land use.

Forest clearing by slash-and-burn farmers was shown to be driven by poverty, food insecurity and unsustainable cropping practices. These constraints were detailed and analysed in a report produced by WRI, which synthesised baseline information on the political economy of shifting cultivation and slash-and-burn agriculture.

(2) Identification of priority policy constraints for sustainable land-use systems.

Analysis of the current policy environments in benchmark countries confirmed that principal policy constraints include:

  • colonisation and road building policies (Brazil, Indonesia)
  • tax and credit policies favouring land clearing (Brazil)
  • resource tenure policies (all countries)
  • negative international terms of trade in humid forest zones and fluctuations in market prices for principal agricultural commodities, timber and non-timber tree products (all countries)
  • lack of involvement of local communities in management of their natural resources (all countries).

(3) Initial estimates of carbon balance.

The carbon stocks and fluxes associated with different land uses were measured by national scientists at the three benchmark sites using standardised field methods. Carbon pools were measured at 61 field sites and in 9 different land uses (primary forest, logged-over forest, secondary forest, fallows, crop land, pastures, plantations, multistrata agroforests and abandoned land). Carbon accumulation during fallow recovery was quantified permitting prediction of the carbon sequestration changes accompanying increased land use pressure and reduced fallow intervals. The carbon flux measurements can be extrapolated in two different ways. Land-use inventories are available for the benchmark sites with classes that correspond to the land uses in which carbon was measured. Simple accounting procedures can thus derive an estimate of total carbon stocks for a given inventory entry.

Some initial examples of land-use changes with global incremental benefits in terms of carbon sequestration which are in addition technically feasible and economically viable from the farmers perspective were identified. In Cameroon, where a disproportionate amount of biomass carbon is contained in the few largest trees, it was shown that improved land conversion methods would conserve 25-40% of the live tree biomass carbon that is otherwise lost to the atmosphere (approximately 75 t ha-1.) In Rondonia, Brazil, farmers have the opportunity to transplant indigenous timber and fruit tree species into the recovering pasture fallows. Such silvopastoral systems can sequester 125 t C ha-1 in tree biomass within twenty years.

(4) Testing models for initial predictions of carbon storage and loss.

Data from the benchmark sites were used as input files for the CENTURY Ecosystem Carbon Simulation Model to explore the effects of the alternative land management strategies on carbon dynamics over varying time periods. Examples of model outputs include defining system carbon management regimes (Brazil) and soil carbon with and without organic input and erosion control regimes (Cameroon).

(5) Additional achievements.

The GEF-funded research in Phase I yielded results beyond those definable in terms of the contracted outputs. A particularly interesting outcome derived from the work in Indonesia. Inconsistent laws on forest land use had created a legal basis for overlapping claims over forest land and was resulting in conflicts between the customary claims of local people and the 'rights' of forest production interests. This legal ambiguity caused insecurity for smallholders and large-scale operators alike and undermined incentives for sustainable resource management.

During Phase I, the ASB consortium held a workshop on people's participation in developing strategies for managing degraded Imperata grasslands in Indonesia. This was followed by a series of discussions between the Department of Forestry and ASB partners, at the request of the Department of Forestry. As a consequence of the discussions at the workshop, the Minister of Forestry requested ASB to advise and support his department in the framing of an appropriate institutional, regulatory and policy reform for removing the current contradictions in the legislation. Implementation of this reform (see Phase II report) should lead to decreased land degradation and increased biodiversity conservation by smallholders and therefore to global environmental benefits.

Introduction | Goal of the ASB Program | The ASB Consortium | Management and Operational Structure | Donors to the ASB Program | ASB Phase 1 (1994-1995) | ASB Phase 2 (1996-1998) | ASB Phase 3 (1999-2002) | ASB Publications | ASB Links

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Page preparation by Dr. Erick C.M. Fernandes, Cornell University.
--ASB Global Coordinator (1998-1999)--

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