Quantitative analysis of tree species in two community forests of Dolpa district, mid-west Nepal

Kunwar, Ripu M; Sharma, Seema

doi:10.3126/hjs.v2i3.226

Cited by 41 publications

(31 citation statements)

References 12 publications

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“…They revealed that the species with high tolerance to climatic variability had followed mid-domain model predictions, and showed a nonlinear relationship with temperature, whereas tropical species richness tracked temperature and area. The Shannon diversity values recorded (1.10 to 2.34) in our study lies close to the reported range of 1.16 to 3.40 for the Himalayan range (Pandey, 2001, Kunwar andSharma, 2004). Maximum value of evenness in Lower temperate zone represented homogeneous communities having similar species distribution.…”

Section: Tree Diversitysupporting

confidence: 66%

Structure, Composition and Diversity of Forest Along the Altitudinal Gradient in the Himalayas, Nepal

Pandey¹,

Adhikari²,

Weber³

2016

Appl Ecol Env Res

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Abstract. The aim of this study was to assess the structure (stem density, height, and basal area), composition and diversity in relatively undisturbed forests along an altitudinal gradient from 2000 m asl to 3900 m asl of Langtang National Park in Central Himalaya. The forest stands along the altitudinal gradient were studied on 20 sampling plots of two sub zones of the Temperate and Subalpine zone. Tsuga dumosa was the ecologically most important species in the Upper and the Lower Subalpine zone with high important value index (IVI = 124.31). Quercus semecarpifolia and Lithocarpus elegans were the ecologically most important species in the Upper and the Lower Temperate zone with IVI of 66.64 and 46.39 respectively. Similarly, indicator species' analysis was performed to know the preferences of tree species within the vegetation zones. Rhododendron campanulatum is highly significant (p < 0.001) and Tsuga dumosa significant (0.05 < p < 0.01) in the Upper Subalpine zone, whereas Rhododendron anthopogon prefers the Lower Subalpine zone with significant value (0.01 < p < 0.001). Only the Quercus semecarpifolia prefers the Upper Temperate zone. There was no specific trend in the structure along the altitudinal gradient. The Shannon diversity index ranged from 1.10 to 2.34 with the highest value in the Lower Temperate zone. Both Simpson index (0.89) and Evenness (0.86) were high in the Lower Temperate zone. From this study it is concluded that the contribution of forest composition in terms of species richness and Shannon diversity is significant in Lower Temperate zone. The Upper Subalpine zone has less diversity and may also be less endangered by human impact but may profit from climate change in the future.

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Section: Tree Diversitysupporting

confidence: 66%

Structure, Composition and Diversity of Forest Along the Altitudinal Gradient in the Himalayas, Nepal

Pandey¹,

Adhikari²,

Weber³

2016

Appl Ecol Env Res

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“…Shannon species diversity (H′) and concen tration of dominance (cd) of the present study sites are more or less similar to the val ues reported by Kunwar & Sharma (2004) in a comparative study between two com munity forests in Dolpa district of mid-west Nepal. These values were comparable with those reported for the Chir pine forest in Garhwal Himalaya (Bhandari et al 1998).…”

Section: Discussionsupporting

confidence: 88%

Diversity pattern of vegetation in and around proposed Kotlibhel hydroelectric project along the Alaknanda River in Garhwal Himalaya (India)

Singh¹,

Dasgupta²,

Jhaldiyal³

et al. 2011

iForest

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“…Valencia et al (1994) reported the density values between 716 to 1440 ha -1 for Kurupukari forest in Guyana and density of terra firm forest as 1561 ha -1 respectively. Kunwar & Sharma, (2004) carried out a study in Dolpa district of mid-west Nepal, where the density values reported from 2090 to 2100 ind ha -1 . In Kumaun Himalayan forests in Uttarakhand, Bargali et al (1987) The decrease in diversity and species richness at high elevation strata could be due to ecophysiological constraints, such as reduced growing season, low temperature and low productivity (Korner, 1998;Gairola et al, 2008).…”

Section: Forest Composition and Structurementioning

confidence: 99%

Forest structure, diversity and regeneration potential along altitudinal gradient in Dhanaulti of Garhwal Himalaya

2016

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Aim of the study: The aim of the present study was to understatnd the forest composition, structure, diversity and regeneration potential along altitudinal gradient.Area of study: The study was carried out in Dhanaulti forest which falls under temperate region of Garhwal Himalaya in Uttarakhand state, India.Material and methods: Vegetation analysis was carried out using 10 quadrats at each altitude using a quadrat size of 10×10 m 2 . In each quadrat, categories of trees >30 cm cbh were considered as trees, 10-30 cm cbh as saplings and <10 cm cbh as seedlings. The data were quantitatively analyzed.Main results: In upper and middle altitudes, Cedrus deodara was reported dominant tree whereas, in lower altitude Quercus leucotrichophora was reported dominant. Tree density was highest in lower altitude which reduced middle and upper altitudes whereas, total basal cover increased with increasing altitude. The increasing total basal cover with altitude could be because of the presence of Cedrus deodara trees having higher girth classes. In tree, sapling and seedling layers, diversity (H) and equitabiltiy (EC) decreased with increasing altitude. However, concentrations of dominace (CD) and beta diversity (BD have shown reverse trend with H and EC which increased with increasing altitudes, in each layer of tree, sapling and seedling.The distribution pattern of most species in all layers of trees, saplings and seedlings was contagious. The regeneration potential of the species has shown that some of the species in the absence of tree layer are still regenerating particularly, Rhododendron arboreum, Benthamidia capitata, Neolitsea pallens etc. It indicates that most of the species are shifting upward as they are getting suitable conditions.Research highlights: Altitude influences species composition, diversity and regeneration potential of species.

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Quantitative analysis of tree species in two community forests of Dolpa district, mid-west Nepal

Cited by 41 publications

References 12 publications

Structure, Composition and Diversity of Forest Along the Altitudinal Gradient in the Himalayas, Nepal

Structure, Composition and Diversity of Forest Along the Altitudinal Gradient in the Himalayas, Nepal

Diversity pattern of vegetation in and around proposed Kotlibhel hydroelectric project along the Alaknanda River in Garhwal Himalaya (India)

Forest structure, diversity and regeneration potential along altitudinal gradient in Dhanaulti of Garhwal Himalaya

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