Acacia mangium

Ecological Restoration of Coal Mine-Degraded Lands in Dry Tropical Climate: What has been done? And what needs to be done?

Background

This paper discusses known methodology for how to restore native forest to abandoned coal mines. The paper splits the process of reclaiming abandoned coal mines into two sections, 1.) physical, technical, or engineering restoration and 2.) Biological Restoration. It also stresses taking a landscape scale approach to restoration, which includes 1.) an initial survey of the area, 2.) determination of the ultimate landscape objectives, and after restoration landuse possibilities, 3.) preparation of working plans for each phase of the restoration operation.

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The Future of Plantation Forests and Forest-Based Industry in Indonesia

Background

The author explores the historical development of plantation forests in Indonesia and then concludes that a stable governmental framework is crucial to facilitate sustainable plantation forest development. He also highlights the importance of cooperation with the processing industry and the alignment of the latter to potential markets.

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Early effects of four fast-growing tree species and their planting density on ground vegetation in Imperata grasslands

Background

The study aimed to test the early effects of four successful reforestation fast-growing exotics tree species and alternative planting densities on the development of ground vegetation. The study was conducted in Riam Kiwa, South Kalimantan, Indonesia in Imperate grasslands. The four fast-growing exotics tree species used in the study were Acacia mangium, Acacia crassicarpa, Gmelina arborea, and Paraserianthes falcataria.

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Initial performance and reforestation potential of 24 tropical tree species planted across a precipitation gradient in the Republic of Panama

Background

Panama has experience significant forest loss due to the conversion of forest lands to agriculture and pasture, causing significant negative effects on ecosystems. Since natural regeneration is slow, the country has recently turned to plantation forestry in order to restore these degraded. Yet, many of these initiatives simply use a few exotic species. This study explores the performance of a range of species, including both native and exotic, in order to better ensure the success and adoption of diversified reforestation strategies.  

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Secondary Forest Regeneration under Fast-Growing Forest Plantations on Degraded Imperata cylindrica Grasslands

Background

This study compares the regeneration of native tree species under the canopy of tree plantations, riverine areas, and uncultivated grassland areas in the Riam Kiwa plantation area of South Kalimantan, Indonesia. This area has a distinct dry season and deeply weathered, acidic soils, and is considered good for forest plantations.

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Carbon Sequestration in Pastures, Silvo-Pastoral Systems and Forests in Four Regions of the Latin American Tropics

background

77% of agricultural land in the tropical Americas is used for pasture (including silvo-pasture and Argo-silvo-pasture), making carbon stocks in this land type an important consideration. This paper presents three-year research results on the evaluation of soil carbon stocks (SCS) in long-established pasture and silvo-pastoral systems (10-16 years under commercial production), native forests and degraded land in four regions of tropical Americas.

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Early Effects of Four Fast-Growing Tree Species and Their Planting Density on Ground Vegetation in Imperata grasslands

background

This study aims to test the success of fast-growing exotics tree species and alternative planting densities on the development of ground vegetation. The study was conducted in Riam Kiwa, South Kalimantan, Indonesia in Imperata grasslands. The four fast-growing exotic tree species used in the study were Acacia mangium, Acacia crassicarpa, Gmelina arborea, and Paraserianthes falcataria.

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Nurse Plant Theory and its Application in Ecological Restoration in Lower Subtropics of China

background

This study examines the mechanisms of the nurse tree effect and ecological factors that influence tree nursing and its relationship to ecological restoration.

Research Goals & Methods

The authors list different pairs of nurse and target tree species, including the broad description of such pairs and research findings of case studies in several locations in lower subtropical China. They also examine the positive and negative feedback loops between nurse trees and target species and explain why the nursing effect occurs.

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Effect of Site Preparation and Initial Fertilization on the Establishment and Growth of Four Plantation Tree Species used in Reforestation of Imperata cylindrica (L.) Beauv. Dominated Grasslands

background

This study describes site preparation techniques for the regeneration of four native tree species in Imperata cylindrica- dominated areas of South Kalimantan, Indonesia.

Goals & Methods

Two trials were run. The first one examined the effects of strip plowing and complete plowing on the performance of Acaca mangium. The second trial compared the effects of complete plowing, herbicide treatment and fertilization (NPK) on four tree species commonly use in Imperata grassland reforestation.

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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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