Decline of Teak Yield in Northern Thailand: Effects of Selective Logging on Forest Structure

Gajaseni, Jiragorn; Jordan, Carl F.

doi:10.2307/2388402

Cited by 19 publications

(8 citation statements)

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“…These species, which included L. coromandelica, S. pinnata, T. mucronata, D. mollis, I. malayana, X. xylocarpa var. kerrii, P. macrocarpus, S. oleosa and T. grandis, were dominant in natural mixed deciduous forests (Ogawa et al, 1961;Bunyavejchewin, 1983;Gajaseni and Jodan, 1990). This suggested that an accelerated natural regeneration strategy could be successful in pure plantations as well as diverse plantations.…”

Section: Species Compositionmentioning

confidence: 99%

Floristic regeneration in five types of teak plantations in Thailand

Kaewkrom

Gajaseni

Jordan

et al. 2005

Forest Ecology and Management

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Section: Species Compositionmentioning

confidence: 99%

Floristic regeneration in five types of teak plantations in Thailand

Kaewkrom

Gajaseni

Jordan

et al. 2005

Forest Ecology and Management

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“…The appropriate method of quantifying volume of a stand is necessary at different age classes and site because volume differ with location, silvicultural activities, site classes and age. Tree volume provides valuable information on supply of both industrial wood and hence identifying sustainable management of forests and woodland ecosystems [28,29]. Dbh classes 40-45 cm, 36-40 and 05-09 recorded lower basal area and volume which could be attributed to fewer number of stems compared to other Dbh classes.…”

Section: Growth and Yield Characteristicsmentioning

confidence: 99%

Growth and Volume Estimates of Teak (Tectona grandis Linn F.) in Kanya Forest Plantation, Kebbi State, Nigeria

Dantani

Shamaki

Gupa

et al. 2019

AJRAF

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This study was conducted in order to estimate growth and volume production of Teak (Tectona grandis) in Kanya Forest Plantation, Nigeria. The plantation was divided in to six strata-based age classes (A=38, B=37, C=36, D=35, E=34, F=28, years). Five plots were randomly selected from each stratum. Trees within each plot were enumerated and measured. Variables measured include total height, diameter at the base, middle, top, and diameter at the breast height were taken from 30 temporary sampled plots of 25x25 m approximately from the center, 180 dominant trees were selected from 712 trees. Descriptive statistic was used to summarize the results while inferential statistic (correlation) was used to establish relationship growth and yield variables. Basal area and volume of sampled trees were computed using Excel as well as scatter plots, correlation analysis was achieved using SPSS statistical package version 20. The results of growth and yield values obtained from the dominant trees are (B=249.312 m3/ha, D=196.128 m3/ha, F=134.976 m3/ha, C=119.328 m3/ha, E=100.320 m3/ ha and A=86.976 m3/ha). The results showed that B was (37 years) the best and A (38 years) was the poorest. The results of correlation showed positive relationships with most of the tree growth and yield characteristics but negative relationships exist between age and some parameters that is to say as the age increases those parameters are decreasing.

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“…Maxwell et al [32] claim that the original lowland forest (350-850 m ASL), a mixed deciduous forest type dominated by teak (Tectona grandis), has been largely removed as a result of selective logging of this and other commercially valuable species [11]. As a consequence, the modern lowland flora is composed of crop plants and patches of deciduous secondary forest with a strong weedy component.…”

Section: Environmental Settingmentioning

confidence: 99%