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Type: Journal article
Title: Inventory procedures for smallholder and community woodlots in the Philippines: methods, initial findings and insights
Author: Herbohn, J.
Vanclay, J.
Ngyuen, H.
Le, H.
Baynes, J.
Harrison, S.
Cedamon, E.
Smith, C.
Firn, J.
Gregorio, N.
Mangaoang, E.
Lamarre, E.
Citation: Small-Scale Forestry, 2014; 13(1):79-100
Publisher: Springer
Issue Date: 2014
ISSN: 1873-7617
Statement of
J. L. Herbohn, J. Vanclay, H. Ngyuen, H. D. Le, J. Baynes, S. R. Harrison, E. Cedamon, C. Smith, J. Firn, N. O. Gregorio, E. Mangaoang, E. Lamarre
Abstract: This paper details the processes and challenges involved in collecting inventory data from smallholder and community woodlots on Leyte Island, Philippines. Over the period from 2005 through to 2012, 253 woodlots at 170 sites were sampled as part of a large multidisciplinary project, resulting in a substantial timber inventory database. The inventory was undertaken to provide information for three separate but interrelated studies, namely (1) tree growth, performance and timber availability from private smallholder woodlots on Leyte Island; (2) tree growth and performance of mixed-species plantings of native species; and (3) the assessment of reforestation outcomes from various forms of reforestation. A common procedure for establishing plots within each site was developed and applied in each study, although the basis of site selection varied. A two-stage probability proportion to size sampling framework was developed to select smallholder woodlots for inclusion in the inventory. In contrast, community-based forestry woodlots were selected using stratified random sampling. Challenges encountered in undertaking the inventory were mostly associated with the need to consult widely before the commencement of the inventory and problems in identifying woodlots for inclusion. Most smallholder woodlots were only capable of producing merchantable volumes of less than 44 % of the site potential due to a lack of appropriate silviculture. There was a clear bimodal distribution of proportion that the woodlots comprised of the total smallholding area. This bimodality reflects two major motivations for smallholders to establish woodlots, namely timber production and to secure land tenure.
Keywords: Trees outside forests; rainforestation; treefarm; inventory method; small-scale forestry; community forestry; reforestation
Rights: © Steve Harrison, John Herbohn 2013
DOI: 10.1007/s11842-013-9242-6
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