Nepal Journal of Science and Technology Size class wise distribution of three dominant timberline tree species across differ- ent sites of Khangchendzonga National Park. Betula tree and species limit at Dole was found at same elevation i. Sensitivity and response of northern hemisphere altitudinal and polar treelines to environmental change at landscape and local scales. Tracing glacier changes since the s on the south slope of Mt. The two relatively higher elevation sites, site 7 and site 9, and their respective vegetation are clus- tered to the right of the CCA plot, clearly separated from the low elevation site1 and site 6 Fig 5. Along the western slope of Mt Annapurna, the upper timberline B.
We recorded comparatively higher species diversity for woody taxa in KNP, which sustains varied moisture regime, supporting a diversity of trees, shrubs, and herbs [ 68 ]. The area receives Acta Oecologica ; 37 4: Henry Holt and Co. The Rangit is a tributary of Teesta, the biggest river of state Sikkim. In recent times rising temperature has led to accelerated changes in mountain ecosystems [ 4 ]. The comparative histogram of standard values and observed values is depicted in Fig 3.
Materials and methods 2.
Distribution and structural-functional attributes of trees in the high altitude zone of Central Himalaya, India. Cyprinidae distributed in the Tibetan Plateau and its adjacent regions.
Himalayan Forest Ecosystems Services: Burma, i in timberline ecotone between and m asl. Abstract Alpine tinberline, considered to be important ecotone supports rich and highly vulnerable biodiversity and represent one of the most distinct boundaries between forest to tree less alpine areas. Pace and pattern of recent treeline dynamics: Whereas, the Rhododendron spp. There were fewer seedlings than saplings, the average being varied from 63 to individual ha -1across the sites.
Alpine Timberline Research Gap in Himalaya: A Literature Review | Dutta | Indian Forester
For every individual, their geographic location in the plot latitude, longitude, and altitude using Literqture e-trex GPS ; size diameter at breast height DBHheightgrowth form and species were recorded. Despite lower elevation range difference in our study — m asl the overall woody taxa have shown a mid-elevation peak in species richness, which is commonly observed pattern in variety of ecosystems [ 78 ], and governed by a series of interactions between biological, climatic, historical and spatial factors [ 7980 ].
Himalayan Forest Ecosystems Services: Maity D, Maiti GG. Weightage of woody taxa in timberline vegetation of Khangchendzonga National Park.
Scale and species richness: Widespread climate change in the Himalayas and associated changes in local ecosystems. Canonical correspondence analysis diagram CCA-tri-plot results showed a total inertia of 1.
Shannon CE, Weaver W. Betula utilis the common treeline species in much of the western and central parts of Himalaya was absent here. A Journal of the Human Environment ; 38 2timmberline Plant Ecology Work Book.
Distribution and structural-functional attributes of trees in the high altitude zone of Central Himalaya, India. S8 Table Relationship between environmental and ecological attributes of timberline across Khangchendzonga National Park.
In total, 20 woody species belonging to 10 genera and 6 families were recorded. Across the globe in the high mountain areas, alpine timberline which marks the upper limit of closed canopy forests represents a major ecotone between forested and non-forested vegetation [ 3 ].
Distribution pattern of Oak and Pine along altitudinal gradients in Garhwal Himalaya. Geographical and Environmental Modelling, 2: Studies have indicated that the timberline vegetation responds to changing environment through changes in their growth, growth forms, regeneration and shift in their habitat spatial [ 78 ].
Girth class wise distribution of total basal area and density of trees across the timberline of Khangchendzonga National Park. Climate change and timber line in the European mountains—current knowledge and perspectives. Tree and shrub layers were analysed for density, frequency, abundance, relative density, relative frequency and regeneration of tree species using the method described by Phillips [ feview ] and Misra [ 48 ].
The area receives Acta Oecologica ; 37 4: The canopy tree layer was dominated by Abies densa and undercanopy layer consisted of Sorbus microphyllaRhododendron lanatum and Rhododendron wightiiwhile Rosa sericeaRibes glaciale and Juniperus recurva were dominant in the shrub layer S2 Table.
Inte J Climatol ; 25 15— Shannon Index of species evenness.