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Spatial Point-pattern Analysis of a Population of Lodgepole Pine

첫 페이지 보기
  • 발행기관
    강원대학교 산림과학연구소 바로가기
  • 간행물
    Journal of Forest and Environmental Science KCI 등재 KCI 등재 바로가기
  • 통권
    제34권 제6호 (2018.12)바로가기
  • 페이지
    pp.419-428
  • 저자
    Sophan Chhin, Shongming Huang
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A343739

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초록

영어
Spatial point-patterns analyses were conducted to provide insight into the ecological process behind competition and mortality in two lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) stands, one in the Lower Foothills, and the other in the Upper Foothills natural subregions in the boreal forest of Alberta, Canada. Spatial statistical tests were applied to live and dead trees and included Clark-Evans nearest neighbor statistic (R), nearest neighbor distribution function (G(r)), and a variant of Ripley’s K function (L(r)). In both lodgepole pine plots, the results indicated that there was significant regularity in the spatial point-pattern of the surviving trees which indicates that competition has been a key driver of mortality and forest dynamics in these plots. Dead trees generally showed a clumping pattern in higher density patches. There were also significant bivariate relationships between live and dead trees, but the relationships differed by natural subregion. In the Lower Foothills plot there was significant attraction between live and dead tees which suggests mainly one-sided competition for light. In contrast, in the Upper Foothills plot, there was significant repulsion between live and dead trees which suggests two-sided competition for soil nutrients and soil moisture.

목차

Abstract
Introduction
Materials and Methods
Study area and site selection
Spatial statistical techniques to analyze marked spatialpoint patterns
Clark-Evans nearest neighbor statistic (R)
Univariate and bivariate nearest neighbor distribution function (G(r))
Univariate and bivariate second-order statistic (L(r))
Random confidence envelopes
Results
Clark-evans nearest neighbor statistic (R)
Second-order statistic (L(r))
Discussion
Conclusions
Acknowledgements
References

키워드

boreal forest competition Pinus contorta point-patterns spatial statistics

저자

  • Sophan Chhin [ West Virginia University, Division of Forestry and Natural Resources, Morgantown, WV 26506, USA ] Corresponding Author
  • Shongming Huang [ Alberta Agriculture and Forestry, Forest Management Branch, Edmonton, Alberta, T5K 2M4, Canada ]

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
    1981~2026
  • 등재여부
    KCI 등재
  • 십진분류
    KDC 526 DDC 634

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