GIS 기반 가야산국립공원의 주요 식물군락 분포요인 분석
Studies on major plant communities distribution factors of the Gayasan national park using GIS
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참고문헌
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초록
본 연구는 지리정보시스템(Geometric Information System, GIS)을 이용하여 가야산 국립공원의 주요 우점식생인 신갈나 무군락과 소나무군락의 분포에 영향을 미치는 고도, 경사, 사면방위, 지형지수, 연평균 온도, 온량지수, 잠재증발산량등 7개 요인들을 분석하고, 요인별 식생분포 특성을 밝혔다. 가야산국립공원의 정밀식생 조사(1/5,000축척)결과, 신갈나 무군락(29.42%), 신갈나무-소나무군락(7.38%), 소나무군락(27.66%), 소나무-신갈나무군락(7.44%), 졸참나무군락 (1.40%), 굴참나무군락(1.10%) 등 총 128개의 식생유형이 확인되었고, 이들 중 신갈나무 우점림과 소나무 우점림이 전체 식생의 80.58%를 차지하고 있는 것으로 조사되었다. 분포요인 분석결과, 신갈나무군락과 소나무군락의 고도는 각각 575~1,065m(80.4%), 465~965m(84.1%), 경사는 21°이상(78%), 21°이상(71.3%), 사면방위의 경우 신갈나무는 북사 면, 소나무는 남사면이 우세한 것으로 분석되었고, 지형지수는 모두 5~6에 집중되어 있고, 연평균 기온은 7~8 ℃(83%), 8~9℃(84%), 온량지수는 59~70 ℃ㆍmonth와 58~88 ℃ㆍmonth에서 주로 분포하며, 잠재증발산량은 560~590mm/yr, 580~610mm/yr에서 가장 많은 분포역을 보였다.
Abstract
This study analysed 7 distribution features of dominant natural vegetation, such as elevation, slope, aspect, topographic index, annual mean temperature, warmth index and potential evapotranspiration using geographic information system(GIS) in Gayasan national park. The Gayasan national park has total 128 communities in which Pinus densiflora community occupies with 29.42%, Quercus mongolica community 27.66% relatively. These two communities comprise 80.58% out of total area, considering Q. mongolica & P. densiflora dominantly mixed communities. The Q. mongolica communities range around 575~1,065m(80.4%) in elevation, and the P. densiflora communities range around 465~965m(84.1%), respectively. The slopes of those two communities areas showed over 21°(78.0%) and (71.3%) respectively. In terms of slope aspect occurrence, Q. mongolica communities occur mostly on northern slope, and the P. densiflora communities on southern slope. The topographic indices of both communities occur around 5~6 most frequently. The Annual mean temperature distributions of Q. mongolica and P. densiflora range 7~8℃(83%), 8~9℃(84%), respectively, And the warmth index range of Q. mongolica is 59~70 ℃ㆍmonth and the P. densiflora community, 58~88 ℃ㆍmonth. The potential evapotranspiration ranges mostly from 560 to 590mm/yr, in Q. mongolica communities, and from 580 to 610mm/yr in P. densiflora communities.
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