Mountains in the Chaning World, Mountains in the Chaning World

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Regeneration status of Rhododendron arboreum in Tinjure-Milke-Jaljale, Eastern Nepal
Kushum Regmi

Last modified: 2017-08-18


Regeneration is the situation in which the new plants grow and reproduce new individual plant in a community. This kind of study is necessary for forests facing with several anthropogenic pressures. Sustainable forest utilization planning can only be made when we know the current status of forest regeneration. This study analyzes the phytosociology of the TMJ area; it also seeks to explore the regeneration status of Rhododendron arboreum and to assess the relationship between regeneration of the species and different environmental variables.  Stratified Random Sampling was used to gather the information ranging from the altitude of   2500 masl to 3300 masl. In each of the altitudinal strata 500 m transect was established and six sampling points were taken randomly. In each of the sampling point circular plot of size 8.92 m radius was established. The soil sample taken from the field and Nitrogen, Potassium, Phosphorous, pH and Organic carbon was analyzed in the laboratory of Central Department of Environmental Science, Tribhuvan University, Kathmandu. Altogether sixteen species were recorded from the study area and the dominant species was Rhododendron arboreum (IVI=147.73), followed by Quercus semicarpifoila (IVI=23.37). The reverse J – shape curve was obtained for the DBH class, indicating good regeneration of Rhododendron arboreum in the study area. Principal Component Analysis and Simple Multiple linear Regression between different explanatory and response variables was done. The sapling density of Rhododendron arboreum shows the significant relationship between canopy cover (P=0.0202) and aspect (P=0.0363). Similarly, seedling density of Rhododendron arboreum shows significant relationship with aspect (P=0.242). Other environmental variables do not show significant relationship with recruits of Rhododendron arboreum. Such kind of research is crucial because it provides insights to understand the vegetation structure and regeneration for any community forest for proper management and planning.


Keywords: Regeneration, Rhododendron arboreum, Tinjure-Milke-Jaljale (TMJ)


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