Reforestation of Degraded Landscapes in Micronesia

James B. Friday, Diane L. Haase, Ruddy Estoy, James Manglona and Ryan Talken
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James B. Friday: Cooperative Extension Service, University of Hawai‘i, Hilo, HI 96720, USA
Diane L. Haase: U.S. Department of Agriculture, Forest Service, Reforestation, Nurseries, and Genetic Resources, Portland, OR 97204, USA
Ruddy Estoy: Guam Division of Forestry and Soil Resources, Mangilao, GU 96913, USA
James Manglona: Rota Department of Lands and Natural Resources, Rota, MP 96951, USA
Ryan Talken: Yap Department of Agriculture and Forestry, Yap, FM 96943, Federated States of Micronesia

Land, 2021, vol. 10, issue 9, 1-16

Abstract: Wildfires on degraded grasslands cause extensive soil erosion and cause environmental and economic damage worldwide. We conducted fertilizer, lime, and mulch trials to improve growth of trees planted in acid soils in degraded grasslands on the Micronesian islands of Guam, Rota, and Yap. Fertilizer application had no effect on height growth of Acacia auriculiformis seedlings on a Mollisol on Guam while lime application had a small but significant positive effect on height growth. Fertilizer application had a significant positive effect on height growth of Acacia confusa seedlings planted on an Oxisol on Rota but lime had no effect. Mulch application increased height growth of Swietenia macrophylla seedlings planted on an Oxisol on Yap but lime application had no effect. Collaboration between university researchers and local forestry agencies can improve reforestation success, but researchers need to consider local capabilities and local knowledge.

Keywords: afforestation; restoration; acid soils; wildfire; adaptive management; Acacia; Swietenia (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2021
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