본 연구는 산불피해지에 인공조림 된 소나무 임분을 대상으로 사면에 따른 지상부와 지하부의 생장특성 차이를 밝히고자 수행되었다. 또한, 지상부와 지하부의 상관관계에 따른 회귀식을 도출하여, 서식환경에 따른 물질생산량 추이를 밝히고자 하였다. 선정된 임분을 남사면, 북사면, 능선부의 세 개 사면으로 나누어 조사하였고, 각 사면별 7본의 조사목을 선정하여 수고, 근원경, 재적, 각 부위별(줄기, 가지, 침엽, 뿌리) 무게 측정, 뿌리의 발달형태, 토양의 수직·수평별 뿌리분포 특성, 미세근의 무게를 측정하였다. 연구 결과, 식물 서식환경...
본 연구는 산불피해지에 인공조림 된 소나무 임분을 대상으로 사면에 따른 지상부와 지하부의 생장특성 차이를 밝히고자 수행되었다. 또한, 지상부와 지하부의 상관관계에 따른 회귀식을 도출하여, 서식환경에 따른 물질생산량 추이를 밝히고자 하였다. 선정된 임분을 남사면, 북사면, 능선부의 세 개 사면으로 나누어 조사하였고, 각 사면별 7본의 조사목을 선정하여 수고, 근원경, 재적, 각 부위별(줄기, 가지, 침엽, 뿌리) 무게 측정, 뿌리의 발달형태, 토양의 수직·수평별 뿌리분포 특성, 미세근의 무게를 측정하였다. 연구 결과, 식물 서식환경은 사면에 따라 다르게 나타났으며, 이에 따라 소나무의 지상부와 지하부의 물질생산량, 형태적 특성도 다르게 나타났다. 또한, 지상부에서 나타나는 근원경은 지하부 뿌리의 분포 및 물질생산량에 밀접한 관련이 있으며, 차후 물질생산량에도 영향을 미치는 것으로 나타났다. 사면에 따른 지상부와 지하부의 물질생산량은 남사면과 북사면은 대부분 높게, 능선부는 대부분 낮게 나타나, 사면에 따른 광조건, 토양조건 등 서식환경의 차이는 물질생산량의 차이에 큰 영향을 미치는 것으로 나타났다. 따라서 사면방향에 따른 서식환경의 차이를 고려한 올바른 조림이 이루어져야 한다. 이러한 연구결과는 인공조림 시 사면방향적인 개념을 제공함으로써 조림방법에 대한 기초자료로 활용될 수 있을 것이며, 더 나아가 수목의 환경적응성 연구에도 활용될 것으로 기대된다.
본 연구는 산불피해지에 인공조림 된 소나무 임분을 대상으로 사면에 따른 지상부와 지하부의 생장특성 차이를 밝히고자 수행되었다. 또한, 지상부와 지하부의 상관관계에 따른 회귀식을 도출하여, 서식환경에 따른 물질생산량 추이를 밝히고자 하였다. 선정된 임분을 남사면, 북사면, 능선부의 세 개 사면으로 나누어 조사하였고, 각 사면별 7본의 조사목을 선정하여 수고, 근원경, 재적, 각 부위별(줄기, 가지, 침엽, 뿌리) 무게 측정, 뿌리의 발달형태, 토양의 수직·수평별 뿌리분포 특성, 미세근의 무게를 측정하였다. 연구 결과, 식물 서식환경은 사면에 따라 다르게 나타났으며, 이에 따라 소나무의 지상부와 지하부의 물질생산량, 형태적 특성도 다르게 나타났다. 또한, 지상부에서 나타나는 근원경은 지하부 뿌리의 분포 및 물질생산량에 밀접한 관련이 있으며, 차후 물질생산량에도 영향을 미치는 것으로 나타났다. 사면에 따른 지상부와 지하부의 물질생산량은 남사면과 북사면은 대부분 높게, 능선부는 대부분 낮게 나타나, 사면에 따른 광조건, 토양조건 등 서식환경의 차이는 물질생산량의 차이에 큰 영향을 미치는 것으로 나타났다. 따라서 사면방향에 따른 서식환경의 차이를 고려한 올바른 조림이 이루어져야 한다. 이러한 연구결과는 인공조림 시 사면방향적인 개념을 제공함으로써 조림방법에 대한 기초자료로 활용될 수 있을 것이며, 더 나아가 수목의 환경적응성 연구에도 활용될 것으로 기대된다.
This study was carried out in order to clarify the differences in the growth characteristics and biomass between the above ground part and below ground part of Pinus densiflora on different facing contour conditions in a post-fire plantation. In addition, it was intended to show changes in biomass a...
This study was carried out in order to clarify the differences in the growth characteristics and biomass between the above ground part and below ground part of Pinus densiflora on different facing contour conditions in a post-fire plantation. In addition, it was intended to show changes in biomass according to the inhabiting environmental conditions by providing a regression equation for the correlation between the above ground and below ground parts. The selected stand was investigated separately into 3 slopes; south-facing slope, north-facing slope and ridge area; 7 trees were selected from each slope and the tree height, diameter at root collar, volume, weight on each part (stem, branch, needle leaf, root), shape of root development, characteristics of vertical and horizontal root distribution in the soil, and weight of fine roots were measured. The results were as follows: 1. The average tree height of target trees was 275±7.66cm in the south-facing slope, 286±4.48cm in the north-facing slope 286±4.48 cm and 212±5.36 cm in the ridge area. There was no significant difference in the average tree height between the south-facing slope and north-facing slope (p=0.199). In the case of the ridge area, the average tree height significantly decreased from the 8th year after planting in comparison to the growth in the south-facing slope and north-facing slope (p<0.01). 2. The average diameter at root collar of the target trees for the south-facing slope (7.4±0.29 cm), and the north-facing slope (7.1±0.30 cm) was significantly higher than that of the ridge area (5.7±0.37 cm) (p<0.05). In addition, average volume of the target trees was 4,257.7±352.23 cm3 in the south-facing slope and 3,750.7±314.42 cm3 in the north-facing slope, which were significantly higher than 2,093.7±225.46 cm3 in the ridge area (p<0.01). 3. The composition rate of each part (stems, branches, needle leaves, roots) was higher in the order of stems, roots, branches, needle leaves in all slopes, and that of branches and needle leaves in the ridge area was relatively higher than that of roots and stems. Meanwhile, R/S rate was 0.33±0.028 in the south-facing slope, 0.31±0.019 in the north-facing slope and 0.27±0.014 in the ridge area (p=0.132). 4. In the case of the development form of roots in the below ground part, the main root in the south-facing slope developed in the most deep and straight form, and the main root in the north-facing slope developed straightly but the stump was bent in the upward direction of the slope. In the ridge area, the vertical main root was less developed and the horizontal main root was relatively more developed. 5. The length of vertical main root was 75±10.76 cm in the south-facing slope, 75±6.57 cm in the north-facing slope and 50±5.65 cm in the ridge area (p=0.057), and the weight was 265.1±31.47 g in the north-facing slope, 223.9±24.46 g in the south-facing slope and 124.6±23.53 g in the ridge area. The ridge area showed a statistically significant difference in the weight of vertical main root in comparison to the other two slopes (p<0.01). 6. The total number of roots in the below ground part was shown in the order of 215±24.57 roots in the south-facing slope, 173±20.75 roots in the north-facing slope and 155±18.50 roots in the ridge area (p=0.073), and the total root length was shown in the order of 2,039±238.52 cm in the south-facing slope, 1,663±205.52 cm in the north-facing slope and 1,478±179.25 cm in the ridge area (p=0.088). In addition, the total weight of roots was shown in the order of 837.2±48.16 g in the south-facing slope, 691.9±77.72 g in the north-facing slope and 367.1±42.24 g in the ridge area. Especially, the ridge area showed a significant difference in the total weight of roots in comparison to the other slopes (p<0.01). 7. The relative value (%) for the number, length and weight of vertical roots in the soil was shown in the order of north-facing slope, ridge area and south-facing slope at the soil depth of 0-10cm, and the south-facing slope showed a relatively lower value in comparison to the other slopes (p<0.05). At the soil depth of 10-20cm, all slopes did not show a statistically significant difference, and at the soil depth below 20cm, the south-facing slope showed a relatively higher value than the other slopes (p<0.05). 8. The relative value (%) for the number and length of horizontal roots in the soil was shown in the order of north-facing slope, ridge area and south-facing slope at the level of 20-40cm, and the south-facing slope showed a relatively lower value in comparison to other slopes (p<0.05). In other ranges except for the level of 20-40cm, all slopes did not show a statistically significant difference. All slopes showed the highest relative value for horizontal weight of root at the level of 0-20cm, and then the value decreased as proceeded to other horizontal range. 9. The weight of fine roots for each slope was shown in the order of 13.7±1.55 g in the south-facing slope, 11.5±2.46 g in the north-facing slope and 8.9±1.76 g in the ridge area (p=0.122), and the percentage of fine roots from the total root weight was shown in the order of 2.56±0.54% in the ridge area, 1.67±0.20% in the south-facing slope and 1.61±0.21% in the north-facing slope (p=0.089). 10. The tree height among the measurement items in the above ground part and the below ground part showed a low correlation in all slopes. However, the diameter at root collar, stems, branches, needle leaves biomass, total biomass of above ground part except for the tree height showed a high correlation to each other in all slopes (p<0.05), and the number, length, weight of roots, length, weight of stump and total biomass in the below ground part also mostly showed a high correlation (p<0.05). 11. The analysis result of regression equation between the diameter at root collar and the total biomass of the above ground and the below gr
This study was carried out in order to clarify the differences in the growth characteristics and biomass between the above ground part and below ground part of Pinus densiflora on different facing contour conditions in a post-fire plantation. In addition, it was intended to show changes in biomass according to the inhabiting environmental conditions by providing a regression equation for the correlation between the above ground and below ground parts. The selected stand was investigated separately into 3 slopes; south-facing slope, north-facing slope and ridge area; 7 trees were selected from each slope and the tree height, diameter at root collar, volume, weight on each part (stem, branch, needle leaf, root), shape of root development, characteristics of vertical and horizontal root distribution in the soil, and weight of fine roots were measured. The results were as follows: 1. The average tree height of target trees was 275±7.66cm in the south-facing slope, 286±4.48cm in the north-facing slope 286±4.48 cm and 212±5.36 cm in the ridge area. There was no significant difference in the average tree height between the south-facing slope and north-facing slope (p=0.199). In the case of the ridge area, the average tree height significantly decreased from the 8th year after planting in comparison to the growth in the south-facing slope and north-facing slope (p<0.01). 2. The average diameter at root collar of the target trees for the south-facing slope (7.4±0.29 cm), and the north-facing slope (7.1±0.30 cm) was significantly higher than that of the ridge area (5.7±0.37 cm) (p<0.05). In addition, average volume of the target trees was 4,257.7±352.23 cm3 in the south-facing slope and 3,750.7±314.42 cm3 in the north-facing slope, which were significantly higher than 2,093.7±225.46 cm3 in the ridge area (p<0.01). 3. The composition rate of each part (stems, branches, needle leaves, roots) was higher in the order of stems, roots, branches, needle leaves in all slopes, and that of branches and needle leaves in the ridge area was relatively higher than that of roots and stems. Meanwhile, R/S rate was 0.33±0.028 in the south-facing slope, 0.31±0.019 in the north-facing slope and 0.27±0.014 in the ridge area (p=0.132). 4. In the case of the development form of roots in the below ground part, the main root in the south-facing slope developed in the most deep and straight form, and the main root in the north-facing slope developed straightly but the stump was bent in the upward direction of the slope. In the ridge area, the vertical main root was less developed and the horizontal main root was relatively more developed. 5. The length of vertical main root was 75±10.76 cm in the south-facing slope, 75±6.57 cm in the north-facing slope and 50±5.65 cm in the ridge area (p=0.057), and the weight was 265.1±31.47 g in the north-facing slope, 223.9±24.46 g in the south-facing slope and 124.6±23.53 g in the ridge area. The ridge area showed a statistically significant difference in the weight of vertical main root in comparison to the other two slopes (p<0.01). 6. The total number of roots in the below ground part was shown in the order of 215±24.57 roots in the south-facing slope, 173±20.75 roots in the north-facing slope and 155±18.50 roots in the ridge area (p=0.073), and the total root length was shown in the order of 2,039±238.52 cm in the south-facing slope, 1,663±205.52 cm in the north-facing slope and 1,478±179.25 cm in the ridge area (p=0.088). In addition, the total weight of roots was shown in the order of 837.2±48.16 g in the south-facing slope, 691.9±77.72 g in the north-facing slope and 367.1±42.24 g in the ridge area. Especially, the ridge area showed a significant difference in the total weight of roots in comparison to the other slopes (p<0.01). 7. The relative value (%) for the number, length and weight of vertical roots in the soil was shown in the order of north-facing slope, ridge area and south-facing slope at the soil depth of 0-10cm, and the south-facing slope showed a relatively lower value in comparison to the other slopes (p<0.05). At the soil depth of 10-20cm, all slopes did not show a statistically significant difference, and at the soil depth below 20cm, the south-facing slope showed a relatively higher value than the other slopes (p<0.05). 8. The relative value (%) for the number and length of horizontal roots in the soil was shown in the order of north-facing slope, ridge area and south-facing slope at the level of 20-40cm, and the south-facing slope showed a relatively lower value in comparison to other slopes (p<0.05). In other ranges except for the level of 20-40cm, all slopes did not show a statistically significant difference. All slopes showed the highest relative value for horizontal weight of root at the level of 0-20cm, and then the value decreased as proceeded to other horizontal range. 9. The weight of fine roots for each slope was shown in the order of 13.7±1.55 g in the south-facing slope, 11.5±2.46 g in the north-facing slope and 8.9±1.76 g in the ridge area (p=0.122), and the percentage of fine roots from the total root weight was shown in the order of 2.56±0.54% in the ridge area, 1.67±0.20% in the south-facing slope and 1.61±0.21% in the north-facing slope (p=0.089). 10. The tree height among the measurement items in the above ground part and the below ground part showed a low correlation in all slopes. However, the diameter at root collar, stems, branches, needle leaves biomass, total biomass of above ground part except for the tree height showed a high correlation to each other in all slopes (p<0.05), and the number, length, weight of roots, length, weight of stump and total biomass in the below ground part also mostly showed a high correlation (p<0.05). 11. The analysis result of regression equation between the diameter at root collar and the total biomass of the above ground and the below gr
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