 ผลงานตีพิมพ์ในวารสารวิชาการThe Influences of an Invasive Plant Species (Leucaena leucocephala)on Tree Regeneration in Khao Phuluang Forest,Northeastern Thailandผู้แต่ง: Dr.Dokrak Marod, Professor , Dr.prateep duengkae, Associate Professor , Dr.Utis Kutintara, Associate Professor , Dr.Sarawood Sungkaew, Associate Professor , Dr.Chongrak Wacharinrat, Lecturer ,  นายแหลมไทย อาษานอก, นายณรงชัย กล่อมวัฒนกุล, วารสาร: 
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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Vegetation Structure and Floristic Composition along the Edge of Montane Forest and Agricultural land in Um Phang Wildlife Santuary, Western Thailand) ผู้เขียน:ดร.ดอกรัก มารอด, ศาสตราจารย์, Lamthai A-sanok, ดร.ประทีป ด้วงแค, รองศาสตราจารย์, ดร.อนรรฆ พัฒนวิบูลย์, อาจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe impacts of agricultural practices on vegetation changes along forest edges were studied by the selection of appropriate native species for reforestation in degraded lower montane forest (LMF) in the Um Phang Wildlife Sanctuary, Western Thailand. Three different land use practices, abandoned area (AB), annual cropping (AC) and shifting cultivation (SC), were selected for studying the changes in vegetation structure and species composition along a gradient from the interior of LMF into adjacent agricultural lands. At each land use site, three belt transects of 20 ? 150 m were established perpendicular to the forest-agriculture edge. The vegetation transect census recorded the living numbers of seedlings, saplings and trees, excluding lianas, and the stem diameter and height were measured for saplings and trees. The light and soil conditions in every belt transect were also investigated. In total, 78 tree species in 73 genera and 40 families were found across all sites. The Shannon- Weiner diversity index (H/) values were significantly higher in the remnant forest (RF) than near-to-edge (nAL) and distant-from-edge (dAL) and the species composition at the forest edge consisted mainly of secondary shrubs and tree species. From the RF toward the edge, numbers of seedlings, saplings and secondary trees increased, while numbers of mature forest trees declined. Environmental factors—namely, relative light intensity (RLI), soil moisture content (SMC) and soil bulk density (SDb)—were significantly (P < 0.05) different along the forest edge. The plant species, Shima wallichii, Eurya accuminata, and Collona elobata, had a high correlation that was intermediate between the RLI and SMC gradients, especially in nAL. Thus, these species should be strongly supported in programs associated with the ecological restoration of LMF. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Influences of an Invasive Plant Species (Leucaena leucocephala) on Tree Regeneration in Khao Phuluang Forest, Northeastern Thailand) ผู้เขียน:ดร.ดอกรัก มารอด, ศาสตราจารย์, ดร.ประทีป ด้วงแค, รองศาสตราจารย์, ดร.อุทิศ กุฏอินทร์, รองศาสตราจารย์, ดร.สราวุธ สังข์แก้ว, รองศาสตราจารย์, จงรัก วัชรินทร์รัตน์, Lamthai Asanok, Narongchai Klomwattanakul สื่อสิ่งพิมพ์:pdf AbstractThe infl uence of Leucaena (Leucaena leucocephala) on tree regeneration was studied in a natural forest in the Khao Phuluang Ecotourism Development Project, northeastern Thailand. In total, three belt transects of 10 ? 150 m were established perpendicular to the edge of the remnant forest (RF) and Leucaena plantation (LP) to study the changes in vegetation structure and species composition along a gradient from the RF into the adjacent LP. The vegetation transect census recorded the living numbers of seedlings, saplings and trees, excluding lianas, and the stem diameter and height were measured for saplings and trees. Light and soil conditions were also investigated. The results showed that the species composition in the LP was very low and only 16 species of 16 genera in 11 families were found. Leucaena had a high stem density and basal area cover of 1,196.7 stems.ha-1 and 13.92 m2.ha-1, respectively. The high density created a closed canopy which reduced the relative light intensity measured as mean ? SD on the fl oor (18.5 ? 5.5%) which was similar to that of the RF (15.56 ? 2.8%). The distribution of the diameter at breast height of Leucaena fi tted a negative exponential growth curve function (r2 = 0.94), indicating the species had successful natural regeneration which was not only from seedlings but also from coppiced stems. The natural regeneration of native species from the RF towards the LP was highly signifi cantly (ANOVA, P < 0.001) different for both the stem density and species number. The stem densities of trees, saplings and seedlings of native species were greater in the RF than in the LP. In addition, not only the native climax species but also pioneer species had less success in establishment in the LP. This would suggest that Leucaena plays an important role in restricting natural forest regeneration by its invasive growing habit which reduces light transmittance to the forest fl oor. |
Researcherดร. จงรัก วัชรินทร์รัตน์, อาจารย์ที่ทำงาน:ภาควิชาวนวัฒนวิทยา คณะวนศาสตร์ สาขาที่สนใจ: การปลูกสร้างสวนป่า , การปลูกสร้างสวนป่ายูคาลิปตัส สัก , วนวัฒนสถิติ , ปฐพีวิทยาป่าไม้ , การจัดการดินป่าไม้ Resume |
Researcherดร. สราวุธ สังข์แก้ว, รองศาสตราจารย์ที่ทำงาน:ภาควิชาชีววิทยาป่าไม้ คณะวนศาสตร์ สาขาที่สนใจ:พฤกษอนุกรมวิธานพรรณไม้ , นิเวศวิทยาป่าไม้, Forest Plant Systematic , Forest Plant Ecology, Forest Botany, Bamboo taxonomy and systematics Resume |
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