Linear Programming towards a Sustainable Management of Forest Plantations: A Case Study of Siamese Rosewood at Tha Kum Noboru Umeda Plantation under the Forest Industry Organization, Trat Province
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Abstract
The objective of this study was to apply linear programming (LP) to determine the scheduling of a sustainable timber harvest of Siamese rosewood (Dalbergia cochinchinensis Pierre) at the Tha Kum Noboru Umeda plantation, Trat province. The methodology in this study consisted of 3 stages namely data preparation, data analysis, and design of timber harvest scheduling. This data covered a productive area of 742.56 rai under Siamese rosewood over a 60 year period of planned management with 6 cutting periods spaced 10 years apart. The rotation must be done at periods equal and greater than 30 years. The objective function of the LP model was maximization of the net present value of the profit from forest logging. The constraints of the LP model should follow a sustainable plantation management as prescribed under the Forest Industry Organization (FIO) policy. In addition, the age class distribution of productive area and the harvested volume should be equal or approximately equal during each of the scheduled cutting period. The LP solution indicated that the value of objective function at an optimal solution was 276,651,700 Baht with a harvested volume of 10,647 cubic metres, approximately 1,774 cubic metres during each cutting period and a remaining merchantable volume of 4,021.5 cubic metres, at par with the FIO guidelines. The age class distribution of forest plantation consisted of 6 classes with an approximately equal productive area of 123.76 rai. This can ensure that the forest plantation produces a sustainable yield.
Article Details
ข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ขอรับรองว่า ต้นฉบับที่เสนอมานี้ยังไม่เคยได้รับการตีพิมพ์และไม่ได้อยู่ในระหว่างกระบวนการพิจารณาตีพิมพ์ลงในวารสารหรือสิ่งตีพิมพ์อื่นใด ข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ยอมรับหลักเกณฑ์และเงื่อนไขการพิจารณาต้นฉบับ ทั้งยินยอมให้กองบรรณาธิการมีสิทธิ์พิจารณาและตรวจแก้ต้นฉบับได้ตามที่เห็นสมควร พร้อมนี้ขอมอบลิขสิทธิ์ผลงานที่ได้รับการตีพิมพ์ให้แก่วารสารวนศาสตร์ คณะวนศาสตร์ มหาวิทยาลัยเกษตรศาสตร์ กรณีมีการฟ้องร้องเรื่องการละเมิดลิขสิทธิ์เกี่ยวกับภาพ กราฟ ข้อความส่วนใดส่วนหนึ่ง หรือ ข้อคิดเห็นที่ปรากฏในผลงาน ให้เป็นความรับผิดชอบของข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) แต่เพียงฝ่ายเดียว และหากข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ประสงค์ถอนบทความในระหว่างกระบวนการพิจารณาของทางวารสาร ข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ยินดีรับผิดชอบค่าใช้จ่ายทั้งหมดที่เกิดขึ้นในกระบวนการพิจารณาบทความนั้น”
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