Acacia mangium

Amelioration of degraded rain forest soils by plantations of native trees

background

While much has been studied about the ability of tree growth to improve degraded soils in temperate zones, less is known about the impacts of tree growth on degraded soils in tropical zones.

research goals & methods

This study looks at the effects of trees planted in abandoned pasture land in northeastern Costa Rica, 25 years after that land had been cleared of rainforest. The soil was sampled before tree planting and 4 years after the trees became established. 

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Financial, Economic and Environmental Profitability of Reforestation of Imperata Grasslands in Indonesia

background

This study assesses the profitability of roundwood production in forest plantations established on Imperata grasslands in South Kalimantan, Indonesia.

Research Goals & Methods

This study uses the discounted cash flow method on the Riam Kiwa reforestation trial area. It also explores the importance of fiscal incentives to financial profitability of roundwood production in forest plantations established on Imperata grasslands.

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Towards an Ecology-Based Strategy for the Reforestation of Imperata cylindrica Grasslands in East Kalimantan

background

This chapter assesses an ecology-based strategy to accelerate the reforestation of grassland towards a dipterocarp-dominated plantation with natural regeneration occuring.

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Contribution to the Restoration of Mixed Forests in Central Vietnam

Background

This article examines reforestation approaches for degraded forests in Central Vietnam and explores a forest management plan in Phong My.

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A Review of the Agroforestry Systems of Costa Rica

Background

This literature review provides a historical overview of agroforestry systems in Costa Rica from the 1970s to the present.

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Agroforestry Training Program: Taking Action, Reaching Out

background

Open access copy available

Restoration of degraded forest land in Thailand: the case of Khao Kho

Background

This chapter discusses the deforestation of Khao Kho district, situated in Thailand’s central highlands, in the 1970s and restoration efforts in the 1990s. Over 75% of the district was forested until 1968, when as a counterinsurgency strategy the Royal Thai Army began to build roads, deforest the district and encourage agricultural settlement in this heretofore intact forest. Deforestation and maize cultivation on these steep hillsides, often with already-poor soil quality degraded in situ, led to rapid degradation with farming untenable by 1990. A UNDP-funded reforestation project – managed by the Army – was initiated in 1990.

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Local and Regional Environmental Variation Influences the Growth of Tropical Trees in Selection Trials in the Republic of Panama

background

This study evaluates the effect of varying site conditions on the basal area of 21 neotropical and 2 exotic tree species at three different sites in Panama. 

Research Goals & Methods

Seedlings were planted in 2003 in randomized blocks and measured for basal diameter, height, live crown length, and crown diameter each year from 2004 to 2006.

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Impact of Plantation on Ecosystem Development in Disturbed Coal Mine Overburden Spoils

background

This study evaluates the growth, survival, understory composition, and soil conditions in a plantation established on a mine site in India.

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Evaluation of Reforestation Potential of 83 Tree Species Planted on Imperata cylindrica Dominated Grassland – A case Study from South Kalimantan, Indonesia

background

In this study, 83 tree species (native and exotic) were tested for their growth and survival in species selection trials in South Kalimantan, Indonesia.

Research Goals & Methods

The trees were planted between January 1987 and December 1988 in areas dominated by the exotic grass Imperata cylindrica and weeding was conducted twice a year.

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