Tag Archives: Volume_22_Number_1

EFFECT OF SPACINGS ON GROWTH AND YIELD OF ALSTONIA SCHOLARIS R. BR. PLANTATION

The study on effect of spacing on growth and yield of Alstonia scholaris R. Br. Plantation were carried out with seven spacings, 0.5×0.5m.² , 0.75×0.75m.² , 1×1m.² , 1.5×1.5m.² , 2×2m.² , 4×4m.² , and 6×6m.²  The trees were planted in September 1996 at Trat Agroforestry Research Station, Trat Province. Then, data was collected 4 times in March 1997, October ... Read More »

ECONOMIC INDIRECT USE VALUE IN CARBON DIOXIDE SEQUESTRATION OF TROPICAL RAIN FOREST

This research aimed to evaluate an economic indirect value, in term of CO₂ sequestration, of Pa Krad community forest in Nathawi  District, Songkhla Province. The evaluation method employed in this study was preventive expenditure. The data used was reviewed and derived from several documents published in Thailand and other countries. The economics value of CO₂ sequestration of Pa Krad was ... Read More »

EFFECT OF FIRE ON TEAK BEEHOLE BORER AND ANT DIVERSITY IN YOUNG TEAK PLANTATION

Studies on the effect of fire on teak beehole borer and ant diversity were carried out in four private teak plantations in Lampang and Phayao provinces during 1999-2000. Each plantation was treated as a block with half of each plantation being burnt and the other half being unburned. After the burning of the plots, number of individual were counted. Number ... Read More »

SURFACE TEMPERATURE ESTIMATION IN BANGKOK METROPOLITAN USING REMOTE SENSING TECHNIQUES

Surface temperature of Bangkok Metropolitan and its surroundings were estimated using remote sensing techniques. The field measurement of surface temperature (Ts) of selected objects was done to incorporate the digital number(DN) of Landsat Thenamic Mapper (TM). Simple linear regression has been employed to prove the affect of DNs of each TM band on Ts. The best-fit regression equation was derived. ... Read More »

OPTIMAL ROTATION OF EUCALYPTUS CAMALDULENSIS PLANTATIONS IN THAILAND BASED ON FINANCIAL RETURN AND RISK

Simulation models were developed to estimate optimal risk-adjusted rotations for Eucalyptus camaldulensis pulpwood plantations in Thailand. Sources of variation in the simulation model were costs, yields, and prices. Monte Carlo simulation was used to estimate expected land expectation values (LEVs) and standard deviation of LEVs for a range of rotation ages and planting spacings. Investors’ risk tolerance levels were incorporated ... Read More »

AN ANALYSIS OF MARKETING SYSTEM OF MEDIUM DENSITY FIBERBOARD INDUSTRY IN THAILAND

The objectives of the study were to study on the production, marketing, market structure, conduct and marketing performance of medium density fiberboard in order to formulate the action plan for questionnaires were used for gathering the needed data. In this study, there were totally 6 medium density fiberboard mills. The raw materials were used for medium density fiberboard production including ... Read More »

THE INVASION OF CLIMAX SPECIES INTO FOREST PLANTATIONS

The study of the invasion of climax species into the forest plantation was conducted at the Sakaerat Environmental Research Station, Nakhon Ratchasima Province, from 1997 to 2000. The permanent plot with size of 1 ha ( 100*100 m. ) was established in each forest type, i.e. dry evergreen forest, Eucalyptus camaldulensis and Acacia auriculaeformis plantation. For the species composition, structure ... Read More »