Dipterocarps as forest restoration species: environmental and economic implications of ecophysiological studies in the nursery

Tolentino E. L. Jr., . and Camacho L. D., . (2006) Dipterocarps as forest restoration species: environmental and economic implications of ecophysiological studies in the nursery. In: 8th Round-Table Conference on Dipterocarps: Dipterocarps - Enhancing Capacities in Sustainable Development and Poverty Alleviation, 15-17 Nov 2005, Ho Chi Minh City (Vietnam).

The potential of dipterocarp species for restoring degraded lands was examined using ecophysiological parameters. The photosynthesis conductance transpiration and water use efficiency of the following dipterocarps species were evaluated for two years in a nursery in the Philippines: Shorea almon Hopea plagata Parashorea malaanonan Anisoptera thurifera and Shorea contorta. Hopea plagata consistently gave high photosynthetic rates ranging from 4.28 to 8.7 μmol CO₂ m-²s-¹. In terms of conductivity Anisoptera thurifera had the highest rate ranging from 0.05 to 0.17 H₂O m-²s-¹. The same species showed the highest transpiration rate ranging from 0.98 to 3.33 mmol m-²s-¹. The most water use efficient dipterocarp species tested was Hopea plagata with values ranging from 5.56 to 7.11. The potential utility of basic ecophysiological parameters for species selection in forest restoration was discussed. The tool could assist forest managers or silviculturists in choosing appropriate dipterocarp species for the varying conditions in the field particularly adverse sites common in degraded lands. Ecophysiological assessments which could be performed in the nursery or in smaller plots in less time periods could facilitate and economize selecting dipterocarps for use in restoring degrading. Limitations of the analysis was also explained.

Full text available from: Official URL: http://myagric.upm.edu.my/id/eprint/16405/1/S4_Tol...

Abstract

The potential of dipterocarp species for restoring degraded lands was examined using ecophysiological parameters. The photosynthesis conductance transpiration and water use efficiency of the following dipterocarps species were evaluated for two years in a nursery in the Philippines: Shorea almon Hopea plagata Parashorea malaanonan Anisoptera thurifera and Shorea contorta. Hopea plagata consistently gave high photosynthetic rates ranging from 4.28 to 8.7 μmol CO₂ m-²s-¹. In terms of conductivity Anisoptera thurifera had the highest rate ranging from 0.05 to 0.17 H₂O m-²s-¹. The same species showed the highest transpiration rate ranging from 0.98 to 3.33 mmol m-²s-¹. The most water use efficient dipterocarp species tested was Hopea plagata with values ranging from 5.56 to 7.11. The potential utility of basic ecophysiological parameters for species selection in forest restoration was discussed. The tool could assist forest managers or silviculturists in choosing appropriate dipterocarp species for the varying conditions in the field particularly adverse sites common in degraded lands. Ecophysiological assessments which could be performed in the nursery or in smaller plots in less time periods could facilitate and economize selecting dipterocarps for use in restoring degrading. Limitations of the analysis was also explained.

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Item Type:	Conference or Workshop Item (Paper)
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. QK 495 D564R859 2005 (095003273) Call Number
AGROVOC Term:	Dipterocarps
AGROVOC Term:	Forest rehabilitation
AGROVOC Term:	Species selection
AGROVOC Term:	Experiments
AGROVOC Term:	Seedlings
AGROVOC Term:	Hopea
AGROVOC Term:	Shorea
AGROVOC Term:	Shorea contorta
AGROVOC Term:	Anisoptera
AGROVOC Term:	Parashorea malaanonan
Geographical Term:	MALAYSIA
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:52
URI:	http://webagris.upm.edu.my/id/eprint/7710

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