Category Archives: นิพนธ์ต้นฉบับ (Original Article)

PRODUCTION AND MARKETING OF PLYWOOD IN THAILAND

The objectives of the study were to determine the production and marketing of plywood in Thailand. The results of the study indicated that there were 21 plywood mills in 2000. There are 3 kinds of raw materials being used for plywood production namely, veneer logs, veneers and glues. During the 5 years period (1996-2000) revealed that the highest and lowest ... Read More »

OBSERVED AND HYPOTHETICAL EFFECT OVER TIME OF THE TERRACED FOREST PLANTATION ON SOIL AND WATER LOSSES AT DOI ANGKHANG HIGHLAND PROJECT, CHIANG MAI

Change of soil and water losses over time of 6 exotic-species from Taiwan namely: Aleurites Montana, Zalkova formosana, Liquidambar formosana, Acacia confuca, Fraxinus griffithic, and Paolonia taiwaniana plated on 2×2.5 m spacing with narrow bench terrace at Doi Angkhang Highland Project, Fang District, Chiang Mai, was observed using runoff plots of 4×15 m installed for each species. Storm runoff and ... Read More »

AN APPLICATION OF USED PLASTIC BOTTLE FOR RAINFALL MEASUREMENT

An application of used plastic bottles for rainfall measurement was conducted at Huai Hong Krai Royal Development Study Center, Doi Saket, Chiang Mai Province. Pairs of 25 mpdified used plastic bottle funnels 2” (R2) and 3” (R3) diameter raingage were installed around the standard 8” (R8) diameter raingage in four directions (North, East, West, and South) within the radius of ... Read More »

BIODIVERSITY DYNAMICS OF ECTOMYCORRHIZAL AND WOOD-ROTTING FUNGI IN FORESTED WATERSHED AREAS OF WESTERN THAILAND

This study was carried out to investigate the biodiversity dynamics of ectomycorrhizal (ECM) and wood – rotting fungi (WRF) in tropical forest at Mae Klong Watershed Research Station, Thong Phaphoom District, Kanchanaburi Province, Western Thailand during 1993 – 1997 (5 years period). Studies were made in natural forest (Plot 1: dru-deciduous dipterocarp forest, dry-or semi-evergreen forest and mixed deciduous forest); ... Read More »

INSECT PEST INVENTORY AND MONITORING OF EXOTIC PLANTS AT DOI ANGKHANG, CHIANG MAI PROVINCE

Insect pest inventory and monitoring of exotic plants were carried out at Doi Angkhang, Changwat Chiang Mai during 1988 to 1997. The main purpose was to know forest insect pest species damaged exotic plant species types of damages and levels of damages. Forest insects of fast growth exotic plant species were surveyed. The results showed that six exotic plant species ... Read More »

PLANT SPECIES DIVERSITY AND SOIL PROPERTY CHANGES IN DIFFERENT-YEAR OLD TEAK PLOTS OF MAEHAD PLANTATION, NONGMUANGKHAI DISTRICT, PHRAE PROVINCE

The Royal Forest Department had objectives for forest plantation that post-ten years maintenance plantation must avoid thinning and let them develop to natural forest. It led to this research which aimed to study 1) changing of plant species diversity in different-year old teak plots 2) changing of soil property in those teak plots and 3) the similarities between plant species ... Read More »

AN ASSESSMENTS OF MITIGATION OPTIONS IN THAI FORESTRY SECTOR FOR REDUCING CARBON EMISSIONS

Six mitigation options through six different management scenarios were assessed in terms of their effectiveness in reducing carbon emissions. They were analysed in terms of various alternative options; current trend scenario, based on current forest policies in operation, and two scenarios put forward in the Thai Forestry Sector Master Plan which are Master Plan Scenario and Self Sufficient Scenario. Three ... Read More »

THE MARKET STRUCTURE, CONDUCT AND PERFORMANCE OF PLYWOOD IN THAILAND

The objectives of this study were to determine the plywood market structure, conduct, and performance of plywood in order to formulate the action plan for plywood marketing in the future. The study was conducted by using questionnaires. The results of the study indicated that market type of plywood was identified to be an oligopoly this mainly due to the concentration ... Read More »

ROLE OF REFORESTATION ON CARBON SINK AT RE-AFFORESTATION RESEARCH AND TRAINING STATION,CHANGWAT NAKHON RATCHASIMA

Study of carbon sink in plantations and the areas covered with Neyraudia reynaudiana and Imperata cylindrica was conducted at Re-afforestation Research and Training Station, Nakhon Ratchasima Province. The objectives are to study the capacity of carbon sink in various patterns of land use. Three pits of soil samples were excavated from each plot. Each soil pit, four levels of soil ... Read More »

USING ANTS AS INDICATORS OF PLANT COMMUNITIES AT KHAO YAI NATIONAL PARK

Studies on using ants as indicators  of Khao Yai National Park were carried out from November 2000 to October 2001. The 4 different plant communities such as mixed deciduous forest, tropical rain forest, dry evergreen forest, and hill evergreen forest were selected. One hundred sampling plots size 30 x 30 cm.2 were placed in each plant community. The specimens were ... Read More »