Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Spatial Distribution Patterns and Population Structure of Doellingeria scabra at Mt. Maebong in Korea

한국 매봉산 참취의 공간적 분포 양상과 집단 구조

  • Received : 2019.04.15
  • Accepted : 2019.07.07
  • Published : 2019.07.30
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Abstract

Doellingeria scabra Thunb. (syn. Aster scaber Thunb.), a perennial herb in the family Asteraceae, is frequently found in the wild mountain regions of Korea. This aim of this work was to measure the characteristics of patchiness of D. scabra in a local population on Mt. Maebong in Taeback-ci, Gangwon-do. The spatial distribution pattern of this species was estimated by analyzing ecological data by methods including the index of dispersion, Lloyd's mean crowding, and Morisita's index. The mean population density of the D. scabra population was 2.94. The D. scabra individuals were uniformly or randomly distributed in small-scale plots and were aggregately distributed in two large-scale plots ($16{\times}32m^2$ and $32{\times}32m^2$). The mean crowding ($M^*$) was 0.916. The mean patchiness index (PAI) was 0.796. Morisita's coefficient tended to decrease the density of the population as the plot size increased. The expected value of Eberhardt's index ($I_E$) in the local population was 2.623. Moran's I of D. scabra significantly differed from the expected value in 6 of 8 cases (75.0%). The first five classes were positive, with four showing statistical significance, indicating similarity among individuals in the first four distance classes (I-IV, 8 m), The results presented here could provide a theoretical basis for the conservation of D. scabra (Korean: chamchwi) and for the rehabilitation and sustainable management of forest ecosystems on Mt. Maebong, as well as on other mountains.

참취, Doellingeria scabra Thunb. (이전의 학명: Aster scaber Thunb.)는 국화과의 다년생 초본으로 한국의 야생산지에서 흔히 찾을 수 있다. 본 연구는 강원도 태백시 매봉산에 분포하는 참취의 국지적 집단에 대해 패치 특성을 측정하고자 하였다. 이 종의 공간적 분포를 평가하기 위해 분산의 지수, Lloyd 평균 군집도, Morisita 지수 등을 통해 자료를 분석했다. 참취 집단의 평균 밀도는 2.94이었다. 참취는 작은 규모의 플롯에서는 일정한 분포 또는 임의 분포를 하였고, 두 개의 큰 규모 플롯($16{\times}32m^2$와 $32{\times}32m^2$)에서는 응집 형태로 분포했다. 평균 밀집도($M^*$)는 0.916이었다. 평균 patchiness index (PAI)는 0.796이었다. Morisita의 계수는 플롯 크기가 커짐에 따라 감소하는 경향을 보였다. 이 집단에서 Eberhardt 지수(IE)의 예상 값은 2.623이었다. 참취의 Moran's I 값에서 처음 5개 구간은 양의 값이었다. 그 중 4개는 유의성을 나타내어 개체간 유사성은 8 m 이내에서 발생한다고 볼 수 있다. 본 연구는 매봉의 참취군락뿐만 아니라 다른 산의 산림 생태계 내 참취 군락의 지속 가능한 유지 및 복원에 대한 이론적 근거를 제공할 수 있다.

Keywords

SMGHBM_2019_v29n7_762_f0001.png 이미지

Fig. 1. The mean aggregation number to find the reason for the aggregation of Doellingeria scabra.

SMGHBM_2019_v29n7_762_f0002.png 이미지

Fig. 2. The curves of patchiness in two areas of Doellingeria scabra using values of Green index.

Table 1. Spatial patterns of Doellingeria scabra individuals at different sampling quadrat sizes in Mt. Maebong

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Table 2. Changes in gathering strength of Doellingeria scabra at different sampling quadrat sizes

SMGHBM_2019_v29n7_762_t0002.png 이미지

Table 3. Clouding or patchiness indices of Doellingeria scabra at different sampling quadrat sizes

SMGHBM_2019_v29n7_762_t0003.png 이미지

Table 4. Spatial autocorrelation coefficients (Moran's I) among plots of Doellingeria scabra for eight distance classes

SMGHBM_2019_v29n7_762_t0004.png 이미지

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