시화호 초지대의 계획소각에 의한 조류군집의 영향

Effect of Prescribed Burning to Avian Community in Sihwa Grassland, Korea

  • 발행 : 2009.08.30

초록

시화호 초지대의 소각에 의한 조류의 서식 영향에 대한 연구는 2007년 3월에서 10월까지 경기도 화성시 마도면 송정리 인근 시화호간척지의 초지에서 실시하였다. 계획소각은 2007년 2월 28일에서 3월 1일까지 시화호 간척지의 초지 중 육상부에 인접한 지역에 대해 실시하였다. 소각지역에서는 총 30종 최대개체수 합계 181개체의 조류가 관찰되었으며, 존치지역에서는 24종 최대개체수 합계 154개체가 관찰되어 소각지역의 관찰조류 종수와 개체수가 높았다. 하지만 우점종은 소각지와 존치지간에 차이가 없었다. 수조류와 산림성조류를 제외한 소각지와 존치지의 평균 종수, 평균개체수, 종 다양도, 종 풍부도는 차이가 없었다. 초기의 군집특성은 계획소각에 의하여 변화하였지만, 후기에는 차이가 감소하였다. 계획소각에 의한 서식지 교란은 일시적으로 새로운 서식지 및 취식장소를 제공하였다. 계획소각이 목본식물의 유입을 차단하여 초지생태계를 유지하는 효과적인 방법이며, 주기적인 계획소각이 초지생태계를 유지 및 관리하는 효율적인 방안임을 제안하고자 한다.

This study was presented to effect of prescribed burning to the avian fauna and was conducted from March to October 2007 in Sihwa grassland, Gyeonggi-do, Korea. Prescribed burning was conducted at Sihwa grassland of Songjeong-ri Mado-myeon, Hwaseong city from 28th February to 1 st March 2007. Thirty birds species were observed and sum of the maximum count was 181 individuals at the prescribed burning area for all survey time. Observed species was 24 species and sum of the maximum count was 154 individuals on the unburned area. Number of species and sum of the maximum count at the prescribed burning area was greater than unburned area. There is no differences in the dominant species between prescribed and unburned area. Average number of species, number of individuals, species diversity and species richness of the prescribed burning area were greater than unburned area in early stage (from March to June) after prescribed burning. Community indices in burned area during early season were different with unburned area by prediscribed burning. However, the indices had became similar between burned and unburned area as time goes by. Disturbance by prescribed burning created new habitat and feeding site temporarily for the avian species in grassland. We would suggest that prescribed burning is most effective method to maintain grassland ecosystem from the invading bush or tree and periodical prescribed burning is a good method to preserve and manage the grassland ecosystem.

키워드

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