earticle

영어

These studies aimed to estimate the depth of organic horizon in the forest soil profile (1), to investigate the change of vegetation structure(2), to estimate the change of biomass(3) at the erosion controlled and rehabilitated mountain areas with the passage of time. This study was carried out as the six times. The first study began in the year of 1985, the second study was in 1988 year, the third study was in 1992, 4th was in 1998 and 5th was in 2002. last study was in 2014. The first study started in the study sites which elapsed 9 years after erosion control works. The results of the study were as follows : (1) The increase rate of the depth of organic horizon was estimated to Y(cm) = 1.8097lnX(yr) + 0.0264 (R2=0.9704), The increase rate of the depth of Litter horizon was estimated to Y = 0.1068X + 1.1089 (R2=0.9103), and A1 horizon was estimated to Y(cm) = 0.0002X3(yr) - 0.0122X2(yr) + 0.258X(yr) - 0.147(R2=0.9777) during 37 years after erosion control works. (2) The important point of Structure analysis on the forest vegetations : The important value(I.V.) of Pinus spp. decreased to Y(%) = 0.0249X(yr)2 – 2.4716X(yr) + 68.128. but The important value(I.V.) of Quercus spp. increased to Y(%) = 0.973X(yr) - 0.2185. The intersection point of two up after 15 years. (3) Time flows going, The increase of biomass estimated to be Y(t/ha) = 0.1084X2(yr) + 3.1074X(yr) - 6.0541 (R2=0.9886).

한국어

1976년 여주시 능현동 일반사방지에서 사방시공 후 37년 동안 시간이 경과함에 따라 시공지의 식생 변화를 구명하기 위하여 6 차례의 조사를 수행하였다. 조사는 토층의 변화, 식생구조변화, 생체량의 변화를 중심으로 수행하여 얻어진 결과는 다음과 같다. 사방시공 후 37년 동안 사방지의 유기물층(O층) 두께의 변화는 Y(cm) = 1.8097lnX(yr) + 0.0264(R2=0.9704)이었고. 또한 부식층(F층)의 변화는 Y = 0.1068X + 1.1089 (R2=0.9103)이라는 직선식으로 약 4cm의 두께가 되었다. 시공 초기에 식생을 하지 않은 참나무류의 상대 중요도 증가율은 Y(%) = 0.973X(yr) - 0.2185이라는 직선식으로 상대 중요도가 35.1%를 차지하였다. 물질량을 대입하여 추정한 식은 Y(t/ha) = 0.1084X2(yr)+3.1074X(yr)-6.0541 (R2=0.9886)이었다. 이번 결과로 사방시공지의 사후 관리 및 식재기술 개발과 북한 황폐지 복구에 기여하고자 본 연구를 수행하였다.