Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
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The change of core habitats of the cranes due to release of the civilian control zone; CCZ and construction disturbance

서식지 교란 및 민간인통제지역 해제에 의한 두루미와 재두루미의 핵심서식지 변화

  • Received : 2015.04.25
  • Accepted : 2015.06.15
  • Published : 2015.08.31
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Abstract

The endangered species, The Red-crowned Crane and the White-naped Crane are vulnerable species to the disturbance for human beings. We examined the importance of CCZ for the cranes by comparing the crane's density in some CCZ-released areas, which are cranes' wintering site in Cheorwon. We also assessed influence of disturbance such as construction and greenhouses on core habitats of cranes. Our study results suggested that the construction and reclamation in the CCZ shrunk core habitat area while increasing core area of far from the construction and reclamation area. The CCZ has been set since March, 2011 and the number of greenhouse has rapidly increased after 2012. As the number and size of greenhouse in the area where designation of CCZ was cancelled increased, foraging area of cranes diminished. Although the area where designation of CCZ was cancelled seemed to have more human disturbance than CCZ, the foraging density of cranes did not decline and even that of white-naped cranes increased. This could be the influence of artificial food supply at their roosting site. In conclusion, if the area of CCZ decline continuously in the future, density of cranes would decrease.

멸종위기 야생생물인 두루미와 재두루미는 인간에 의한 교란에 취약한 조류이다. 본 연구는 두루미류의 월동지인 철원의 민간인통제지역 중 일부 해제지역의 서식밀도 변화를 비교하여 그 중요성을 검증하고자 하였다. 또한 공사 및 비닐하우스 건설 등 교란에 의해 두루미류 핵심서식지역 범위에 대한 영향을 평가하였다. 연구결과 민간인통제지역 내에서의 공사 및 개간은 두루미류의 핵심서식지를 위축시키고, 원거리의 핵심서식지 면적을 증대시키는 영향이 있었다. 민간인통제지역의 개방은 2011년 3월에 이루어졌는데, 그 이전 이후의 3년간을 비교할 때 비닐하우스의 건립이 급격히 증가하였다. 민간인통제지역에서 해제된 지역은 비닐하우스의 건설이 집중적으로 증가하였고 개별 비닐하우스의 규모도 증가하였으며 이에따라 두루미의 취식영역이 감소하는 영향이 있었다. 하지만 민간인통제지역에서 해제된 지역임에도 불구하고 두루미의 취식밀도는 감소하지 않았고, 재두루미의 취식밀도는 오히려 증가하였는데, 이는 인근의 잠자리지역에 먹이를 공급했기 때문으로 판단되었다. 향후 민간인통제지역이 추가적으로 해제될 경우 두루미류의 서식밀도가 더욱 낮아질 것으로 예상되었다.

Keywords

References

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