Earticle

초록

영어

Phenological events of four Rhododendron tree species (viz. R. arboreum, R. arboreum ssp. delavayi var. delavayi, R. barbatum and R. kesangiae) was monitored in temperate mixed broad-leaved forests of Arunachal Pradesh, India. Phenological events like flower bud formation, flowering, fruit setting, fruit maturing, seed dispersal, leaf bud formation, leaf flushing, and leaf shedding were recorded. Indices i.e., phenophase sequence index (PSI), active phenophasic period of the species (APS) and index of reproductive/vegetative activity (RVA) were also calculated. Present study revealed that bark consistency, growth form and leaf pattern of the studied species have showed variations among the species. Rhododendron species exhibited the phenological events overlapping with other phenophases. The peak flower bud formation was observed during the winter; R. arboreum ssp. delavayi var. delavayi start flowering from December, while the flowering in rest three species exhibited during February to April. Fruit setting occurred during summer to autumn while fruit maturation revealed peak during November. Leaf bud formation illustrated two peaks in April and May, leaf flushing exhibited peak in June, while leaf shedding peaked during October to November. Active phenophasic period of the species were found 12 months, which revealed that species engage in various phenophase activities throughout the year. Phenophase sequence index ranged between 0.8 to 0.9 (PSI ≥0.6), signifies that species have a sequential arrangement of phenophases. Index of reproductive/vegetative activity of the species exemplified ＞1, indicate that the reproductive phenophases were dominance over vegetative phenophases. The study have provided substantial insight on the life cycle events of Rhododendron species and ecological approaches for further scientific study with recent climate change and effective management and conservation.

목차

Abstract
Introduction
Materials and Methods
Study sites
Study species
Phenological events
Phenophase sequence index (PSI)
Active phenophasic period of the species (APS)
Index of reproductive/vegetative activity (RVA)
Results
Eco-morphological characteristics of study species
Phenological events
Phenophase sequence index (PSI), Active phenophasicperiod of the species (APS) and Index of reproductive/vegetative activity (RVA)
Discussion
Acknowledgements
References

키워드

저자

• Ashish Paul [ Department of Forestry, North Eastern Regional Institute of Science and Technology (Deemed to be University), Nirjuli 791109, Arunachal Pradesh, India ] Corresponding Author
• Mohamed Latif Khan [ Department of Botany, Dr. Hari Singh Gour Central University, Sagar 470003, Madhya Pradesh, India ]
• Ashesh Kumar Das [ Department of Ecology and Environmental Science, Assam University, Silchar 788011, Assam, India ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  Journal of Forest and Environmental Science [산림과학연구]

• 간기

  계간

• pISSN

  2288-9744

• eISSN

  2288-9752

• 수록기간

  1981~2025

• 등재여부

  KCI 등재

• 십진분류

  KDC 526 DDC 634