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Estimation of diameter distribution and individual tree height-DBH allometry in hybrid aspen plantations using monitoring data

첫 페이지 보기
  • 발행기관
    강원대학교 산림과학연구소 바로가기
  • 간행물
    강원대학교 산림과학연구소 학술대회 바로가기
  • 통권
    2022 International symposium of Institute of Forest Science for the 40th Anniversary of College of Forest and Environment Science (2022.10)바로가기
  • 페이지
    pp.102-102
  • 저자
    Daesung Lee, Jouni Siipilehto, Jari Hynynen
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A450474

원문정보

초록

영어
Hybrid aspen is a hybrid between Populus tremula L. × P. tremuloides Michx. and is known as a prospective broadleaved species in northern Europe. The usage for pulpwood and bioenergy is expected with vigorous growth characteristics, but the studies on growth and yield modelling based on empirical data are still insufficient. This research aimed to present the main modelling results regarding diameter and height and to provide an extended idea for model application in practice. The materials applied for modelling were collected from the experimental sites located in southern Finland. The selected clones of hybrid aspen were planted on the sites, and at the same time, plots were established during 1997–1999 with proper site preparation and fencing by experiment. The plots were measured repeatedly at 1–3 years interval with 7–12 times in total by experiment. As a result, the diameter distribution and tree height-dbh allometry were figured out over time and appropriate modelling methods were applied using 2-parameter Weibull function and Näslund’s model, respectively. In the Weibull distribution with parameter recovery method, the basal area-weighted mean diameter (DG) with the number of trees per ha (TPH) and stand basal area (BA) presented the best fit compared to other type of stand diameter statistics. The Näslund’s nonlinear mixed-effects model was fitted for tree height estimation with driving variables of age, BA, DG, and basal area-weighted mean height (HG) in addition to tree dbh. Furthermore, it was feasible to simulate these models in combination with the predicted stand characteristics such as BA, DG, and HG based on stand age, site index, and TPH. This will enable one to simulate the growth and yield of hybrid aspen plantations for stand management. Overall, our models were considered to be practical and applicable on a basis of monitoring data of field trials.

키워드

Populus tremula × P. tremuloides clonal plantation Weibull function parameter recovery Näslund’s height curve; nonlinear mixed-effects model

저자

  • Daesung Lee [ Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790 Helsinki, Finland ] Corresponding Author
  • Jouni Siipilehto [ Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790 Helsinki, Finland ]
  • Jari Hynynen [ Natural Resources Institute Finland (Luke), Vipusenkuja 5, 57200 Savonlinna, Finland ]

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
    강원대학교 산림과학연구소 학술대회
  • 간기
    부정기
  • 수록기간
    2017~2024
  • 십진분류
    KDC 526 DDC 634

이 권호 내 다른 논문 / 강원대학교 산림과학연구소 학술대회 2022 International symposium of Institute of Forest Science for the 40th Anniversary of College of Forest and Environment Science

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