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Estimation of Strength Loss and Decay Severity of Juniperus procera by Juniper Pocket Rots Fungus, P. demidoffii in Ethiopian Forests

첫 페이지 보기
  • 발행기관
    강원대학교 산림과학연구소 바로가기
  • 간행물
    Journal of Forest and Environmental Science KCI 등재 바로가기
  • 통권
    제36권 제2호 (2020.06)바로가기
  • 페이지
    pp.143-155
  • 저자
    Addisu Assefa
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A378112

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원문정보

초록

영어
A juniper pocket rot fungus, Pyrofomes demidoffii is a basidiomycetous fungus responsible for damage of living Juniperus spp. However, its effect on the residual strength and on the extent of decay of juniper’s trunk was not determined in any prior studies. The purpose of this study was to study the features of J. procera infected by P. demdoffii, and to estimate the level of strength loss and decay severity in the trunk at D.B.H height using different five formulas. Infected juniper stands were examined in two Ethiopian forests through Visual Tree Assessment (VTA) followed by a slight destructive drilling of the trunk at D.B.H height. The decayed juniper tree is characterized by partially degraded lignin material at incipient stage of decay to completely degraded lignin material at final stage of decay. In the evaluated formulas, results of ANOVA showed that a significantly higher mean percentage of strength loss and decay severity were recorded in the trees of larger D.B.H categories (p<0.001). The strength loss formulas produced the same to similar patterns of sum of ranks of strength loss or decay severity in the trunk, but the differences varied significantly among D.B.H categories in Kruskal Wallis-test (p<0.001). In conclusion, the employed formulas showed similar to different degree of variability in quantification of strength loss or decay severity in the trunk. The findings of our study could be used as the baseline for further study on juniper’s strength loss or decays in the trunk of Juniperus spp. and unequivocally helps to design the corresponding management as result of P. demidoffii.

목차

Abstract
Introduction
Materials and Methods
Study areas and field survey
Characterization of decay caused by juniper pocket rot fungus
Sampling, and study design for strength loss and decay severity analysis
Estimation of strength loss in the trunk
Estimation of decay severity in the trunk (at D.B.H height)
Data analysis
Results and Discussion
Characteristics of decayed juniper by P. demidoffii
Visual assessment of decay and internal decay analysis
Quantitative assessment of strength loss
Decay severity in the trunk
References

키워드

D.B.H decay severity J. procera Pyrofomes demidoffii strength loss

저자

  • Addisu Assefa [ Department of Biology, Madda Walabu University, Bale Robe 247, Ethiopia ] Corresponding Author

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    강원대학교 산림과학연구소 [Institute of Forest Science Kangwon National University]
  • 설립연도
    1975
  • 분야
    농수해양>임학
  • 소개
    강원대학교부설산림과학연구소(이하 “연구소”라 한다)는 산림에 관한 제반 학술적 연구를 통하여 산림자원의 효용을 밝히고 임업 및 임산업의 발전에 기여함을 목적으로 한다.

간행물

  • 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

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