Assessment of the Risk of Invasion in Phouphueng-Phouphathoun and Tadkuangsi National Protection Forest Areas, Lao People’s Democratic Republic, Using Geographic Information System Data
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Abstract
The land use changes were studied in forest land use in the Phouphueng Phouphatoun and Tadkuangsi National Protection Forests and a geo-information system was used to assess the risk of forest invasions. Land use was classified into five categories: agricultural; forest; road; urban and built-up; and water body. Visual interpretation methods were applied to identify the areas at risk of forest invasion using geographic information system data.
Based on the results, the visual interpretation of land use in 2015 and 2023 had overall accuracy levels of only 79.55% and 90.91%, respectively, with Kappa statistics of 0.58 and 0.83, respectively. Deforestation caused the greatest change in land use between 2015 and 2023, while agriculture had the greatest increase of 2,959.10 ha. The analysis of forest infestation risk areas using the geographic information system data identified the most influential factors were the average income per village per year (0.32), followed by the population of the village, distance from the community, distance from the road, distance from the water source, percentage of area slope and digital elevation models, with their weight levels of importance being 0.23, 0.15, 0.12, 0.10, 0.05 and 0.03, respectively. There were 6 risk levels identified: not at risk, very low risk, low risk, moderate risk, high risk and very high risk, covering 0.00%, 16.63%, 22.49%, 16.34%, 26.68% and 17.86%, respectively, of the total area. Thus, substantial forest areas were identified that were highly vulnerable to invasion. These results could be applied to develop operational support.
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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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