Developing Identification Keys of Tree Seedlings in Seasonal Dry Evergreen Forest, Huai Kha Khaeng Wildlife Sanctuary
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Abstract
For the past several decades, some of plant specimens, especially those of seedlings, have
a limited number of the useful morphological characteristics for species identification in ecological
research of Thailand. Therefore, the objective of this study was to devolop identification keys
for seedlings of thirty tree species in the 50-ha forest dynamics plot at Huai Kha Khaeng Wildlife
Sanctuary, using the classical plant taxonomy technique and numerical plant taxonomy technique
approaches. The seeds were collected from the surrounding areas of the plot and brought back
to the nursery for propagation. Qualitative and quantitative morphological characteristics of
each seedlings were observed from the germination to the time when the firs t pair of true leaves
emerged. Four approaches were employed to construct an identification key: (1) numerical plant
taxonomy technique with quantitative characters (2) numerical plant taxonomy technique with
qualitative characters (3) numerical plant taxonomy technique with both quantitative and qualitative
characters and (4) classical plant taxonomy technique with both quantitative and qualitative
characters. A total of 39 characteristics (26 qualitative, 10 quantitative characters) were observed.
Among these characteristic, 12, 16, 15 and 15 characters were used in the construction of the
identification key with each approaches, respecitively, with the accuracy values ranging from
96.27 to 100%, respectively. This study can facilitate further studies in seedling dynamics and forest regeneration in the 50-ha forest dynamics plots in Hua Kha Khaeng Wildlife Sanctuary,
as well as the surrounding areas.
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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