Site index equation for smallholder plantations of Gmelina arborea in Leyte Province, the Philippines

被引：6

作者：

Vanclay J.K. ^{[1
]}

Baynes J. ^{[2
]}

Cedamon E. ^{[3
]}

机构：

[1] Southern Cross University, Lismore, NSW 2480

[2] School of Natural and Rural Systems Management, The University of Queensland, Brisbane

[3] College of Forestry and Natural Resources, Visayas State University, Baybay City 6521-A, Visca

来源：

Small-scale Forestry | 2008年 / 7卷 / 1期

关键词：

Dendrometer; Gamar; Non-industrial private forest; Parsimonious fit; Yemane;

D O I：

10.1007/s11842-008-9042-6

中图分类号：

学科分类号：

摘要：

The equation SiteIndex = Height × Log(IndexYear+0.5)/Log(Age+0.5) is suggested as a robust way to classify site index of small private Gmelina arborea plantations in Leyte province in the Philippines. Estimates of site index from this equation correlate well with other indicators of site productivity, including the observed mean annual volume increment and soil depth. An alternative equation based on slope and soil depth offers an indication of potential site productivity on unforested sites where no crop trees are present. © Steve Harrison, John Herbohn 2008.

引用

页码：87 / 93

页数：6

共 14 条

[1]

Baynes J., The silviculture of small-scale forest plantations in Leyte, the Philippines: A preliminary survey, ACIAR Smallholder Forestry Project - Improving Financial Returns to Smallholder Tree Farmers in the Philippines, pp. 131-142, (2005)

[2]

Cedamon E., Emtage N., Suh J., Herbohn J., Harrison S., Mangaoang E., Present tree planting and management activities in four rural communities in Leyte Province, Ann Trop Res, 27, 1, pp. 19-34, (2005)

[3]

Dvorak W.S., World view of Gmelina arborea: Opporunities and challenges, Recent Advances With Gmelina Arborea, (2003)

[4]

Emtage N., Suh J., Socio-economic factors affecting smallholder tree-planting and management intentions in Leyte Province, the Philippines, Small-Scale For Econ Manage Policy, 3, 2, pp. 257-270, (2004)

[5]

Herbohn J., Harrison S., Improving financial returns to smallholder tree farmers in the Philippines: Issues and way forward, Proceedings from the ACIAR Project Planning Workshop, pp. 7-19, (2005)

[6]

Herbohn J., Harrison S., Vanclay J., Wardell-Johnson G., Designing a strategy to sample tree farms on Leyte, Improving Financial Returns to Smallholder Tree Farmers in the Philippines, pp. 203-210, (2005)

[7]

Greaves A., Site Index Curves for Gmelina Arborea Roxb., (1978)

[8]

Lauridsen E.B., Kjaer E.D., Provenance research in Gmelina arborea Linnz, Roxb.: A summary of results from three decades of research and a discussion of how to use them, Int For Rev, 4, 1, pp. 1-15, (2002)

[9]

Mabberley D.J., The Plant Book, (1987)

[10]

Monterola J.G.N., Morales F., Herbohn J., Vanclay J., Wardell-Johnson G., Mangaoang E., Harrison S., Measurement of smallholder tree farms on Leyte Island, Improving the Triple Bottom Line Returns from Small-scale Forestry, Proceedings from an International Conference, pp. 283-296, (2007)

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