Journal of the Korean Society of Environmental Restoration Technology
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v.17
no.5
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pp.79-89
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2014
This study was carried out to provide basic information to improve the surrounding ecosystems with benefit analysis and monitoring in cut slopes following establishment of a test construction to improve ecological environment in slopes of an expressway. Field tests from October 2012 to May 2013 were conducted in Seosejong IC and Shinyang IC. In order to improve the view of slopes, soil condition is an important factor. The earth slope, it is possible to introduce directly the plant. Stable construction method was applied, another foundation for planting is necessary. The mixing ratio of the seeds according to the experimental results, the difference was found at an early stage plants in Site I (Seosejong IC). Trees were planted on terraced structures were well coordinated and pictures. The growth of planted trees was good in Site II (Shinyang IC). Due to the use of plants in the landscape will continue to change. Thus, long-term monitoring and landscape analysis will be needed.
The purpose of this study is to present a new orientation for the residential culture that can meet the shifting demands of modern people as their attitudes toward life change. One of the rural regions that has lately attracted considerable attention, Wonsam-myun, Yongin city, is selected as the residence zone to develop a housing complex. In this study, a new housing complex is designed to supplement the defects of existing housing complexes by making the utmost use of the merits that Wonsam-myun as a residential environment can offer. The major findings of this study can be summarized as follows: 1. To present a new Korean model, yellow soil houses and traditional trees were used to utilize Korea's traditional landscape beauty in the construction and landscape aspect, instead of imitating indiscreetly foreign styles in which most newly developed housing complexes were built. 2. To provide convenience to prospective residents, a package sales scheme covering from lot purchase to building permit was adopted. 3. As for the planting plan, existing plants was preserved as much as possible to keep harmony with new plants. In selecting plant types, a traditional method that emphasizes on the visual effects of aesthetic plants and shade trees with the change of seasons and plants various kinds of plants according to directions was adopted. 4. Each household was given the opportunity to design its own garden according to the family's preference and taste. 5. The advantages of a rural area that city does not offer were fully utilized to provide the residents with convenience and pleasure of living.
Journal of the Korean Institute of Landscape Architecture
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v.26
no.2
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pp.229-239
/
1998
This study investigated ecological and growth characteristics of Sorbus alnifolia for usage of landscape woody plant. The results are obtained as follows: 1) The results of investigate the native Sorbus alnifolia vegetations in Seoul and Kyonggi-do are as follows. From the investigation of canopy and understory, Pinus densiflora, Pinus rigida, Quercus mongolica Quercus dentata and Quercus aliena grow well in natural habitat of Sorbus alnifolia. While Rhod. mucronulatum, Symplocos chinensis, Corylus hetrophylla and alnifolia. While Rhod. mucronulatum, Symplocos chinensis, Corylus hetrophylla and Lindera obtusiloba are commonly found from shrub structure in the habitat. These structure pattern of natural setting would be applied for ecological planting design. 2) The Mt. Rabong area, which locates near a heavy factory district and is considered as environmental dteriorated area has the lowest soil acidity range among three investigated area. Sorbus alnifolia grows in where contains low soil acidity and inorganic nutrient. It might concluded that Sorbus alnifolia be tolerates to air pollution. 3) From the investigation of good specimen tres, the oldest good specimen trees of Sorbus alnifolia have grown in Seoul and Kyonggi-Do for 130 years with 15m height and 12m width. Most of good specimen trees are over 50 years old with 10~15m height, 4.5-12m width. These growth shape and form could be recommend that Sorbus alnifolia would be used as street tree and landscape woody plant in urban park.
Journal of the Korean Society of Environmental Restoration Technology
/
v.5
no.3
/
pp.50-57
/
2002
The restoration techniques of large disturbed land containing native forest resources and soil animals were investigated on the new campus area of Kyushu University in Japan. Important techniques to restore native forest and biodiversity in that area are transplantation of existing large trees, transplantation of the forest soil, transplantation of native tree stools, and the reuse of wood and bamboo chips. The benefits can be obtained by using these methods. Firstly, the native genetic resources that would be discarded as part of the land development can be reused. Secondary, the time taken to become a high growth forest as opposed to the practice of planting saplings or grass seeds can be reduced. At last, the native forest ecosystem containing various under-story vegetations and soil animals can be conserved and regenerated. In addition, big and small ponds were constructed in the biodiversity preservation zone to preserve rare plants, rare animals, and native aquatic animals. And these plants and animals were transplanted and moved to ponds.
Proceedings of the National Institute of Ecology of the Republic of Korea
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v.2
no.2
/
pp.76-81
/
2021
With continuous decline of Philippine forest cover, sustainable forest management and restoration are essential to restore destroyed forest ecosystems. Unfortunately, of ten most planted trees in reforestation projects in the Philippines, eight are exotic species, with large leaf mahogany (Swietenia macrophylla) being the most dominant. In this study, effect of Swietenia macrophylla in reforestation projects on native tree species was evaluated. Effects of S. macrophylla leaf litter, frequency, and canopy closure on the growth of the Philippine native species Pterocarpus indicus were investigated. Results showed that S. macrophylla leaf litter significantly inhibited the growth of P. indicus seedlings based on root collar-to-shoot height. The standardized growth rate of seedlings in plots without S. macrophylla leaf litter was significantly higher than the growth rate of seedlings in plots with leaf litter. Furthermore, there was no significant difference in the standardized growth rate of seedlings between plots without leaf litter and a control plot. On the contrary, S. macrophylla tree frequency and canopy closure showed no significant effect. These results attest to the negative effect of widely planted S. macrophylla to a valuable Philippine native tree P. indicus. With accumulating scientific evidence about negative effects of S. macrophylla on native trees, discontinued use in tree planting and reforestation efforts with active management of restoration sites previously planted with large leaf mahogany are needed.
In this study, quantitative models were applied to case parks to estimate the carbon reduction by trees, which was compared and analyzed at the tree and park levels. At the tree level, quantitative models of carbon storage and uptake differed by up to 7.9 times, even for the same species and size. At the park level, the carbon reduction from quantitative models varied by up to 3.7 times for the same park. In other words, carbon reduction by quantitative models exhibited considerable variation at the tree and park levels. These differences are likely due to the use of different growth environment coefficients and annual diameter at breast height growth rates and the overestimation of carbon reduction due to the substitution of the same genus and group model for each tree species. Extending the annual carbon uptake per unit area of the case park to the total park area of Chuncheon a carbon uptake ranging from a minimum of 370.4 t/yr and a maximum of 929.3 t/yr, and the difference can reach up to 558.9 t/yr. This is equivalent to the carbon emissions from the annual household electricity consumption of approximately 2,430 people. These results suggest that the indiscriminate application of quantitative models to estimate carbon reduction in urban trees can lead to significant errors and deviations in estimating carbon storage and uptake in urban greenspaces. The findings of this study can serve as a basis for estimating carbon reduction in urban greening research, projects, and policies.
Journal of the Korean Institute of Landscape Architecture
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v.35
no.5
/
pp.46-55
/
2007
This study was carried out to analyze both the root structure and the fine root phytomass of the vertical and horizontal distribution of Zelkova serrata Makino. which was transplanted in the reclaimed land from the sea in Gwangyang, Jeonnam, South Korea. The base ground was reclaimed land from the sea. $Z_1$ of the planting ground was filled to a $100{\sim}150cm$ thickness with the improved soil instead of the reclaimed soil from the sea, $Z_2$ of the planting ground was covered to a $20{\sim}30cm$ thickness with the improved soil and $Z_3$ of the planting ground was mounded to 120cm thickness with the improved soil on the reclaimed land from the sea. In addition, $Z_4,\;Z_5\;and\;Z_6$ of the planting grounds were at the large-sized mound on the reclaimed land from the sea. $Z_4$ of the planting ground was located at the lowest level, $Z_5$ planting ground was located at the slope and $Z_6$ planting ground was located at the top of the large-sized mound. The large-sized mounds contain 3 layers, the base layer was reclaimed land from the sea and the second layer was mounded to a $200{\sim}300cm$ thickness with the desalinized soil from the sea on the base layers and the finally layers were mounded to a $80{\sim}120cm$ thickness with improved soil on the second layer. The planting grounds $Z_3,\;Z_4,\;Z_5\;and\;Z_6$ developed roots such as tap roots, lateral roots and heart roots. However, in $Z_1\;and\;Z_2$ roots development were inhibited. The fine-root phytomass of the 6 planting ground types was as follows: $113.5g\;DM/m^2$ for $Z_5$, $105.5g\;DM/m^2$ for $Z_4$, $88.3g\;DM/m^2$ for $Z_3$, $81.0g\;DM/m^2$ for $Z_6$, $73.0g\;DM/m^2$ for $Z_2$, $43.3g\;DM/m^2$ for $Z_1$. The vertical distribution of the fine root phytomass decreased from the upper to the deeper soil profiles in the 6 mound types. The fine root phytomass was $43.3{\sim}71.8%$ in a $0{\sim}20cm$ thickness of soil layer and it decreased according to the distance from the nearest trees. The root growth in the improved soil was better than in the reclaimed soil from the sea. However, root growth decreased more in the disturbed soils even though the planting grounds contained the improved soils. The retarded development of roots and the spatial distribution patterns of the fine root phytomass were closely connected to the reclaimed soil from the sea. In the disturbed soil, the soil hardness and alkalic cation($Na^+,\;K^+,\;Ca^{2+},\;Mg^{2+}$). were high and the soil water was lacking. We suggest that the construction of planting grounds and the improvement of bad soil are necessary for the proper and effective growth of landscaping plants.
Park, Heon;Yoon, Yong-Han;Kim, Won-Tae;Lee, Hyun-Jong;Park, Bong-Ju
Journal of Forest and Environmental Science
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v.24
no.1
/
pp.35-39
/
2008
The present study was conducted to analyze the soil environment of planted areas around Sudokwon Landfill Site, and drew conclusions as follows. Among the physical properties of soil, bulk density ranged between 1.11~1.59 $g{\cdot}cm^{-3}$, which was higher than the average bulk density (1.05 $g{\cdot}cm^{-3}$) of the B layer of forest soil in Gyeonggido, Korea. This is probably because of treading by heavy equipment used to prepare the ground for planting, and measures should be taken to improve bulk density for the growth of the root system of trees. Among the chemical properties of soils, the organic matter content was only 1/5~1/10 of 30 $g{\cdot}kg^{-1}$, the adequate level for landscape planting. In addition, cation exchange capacity (CEC) ranged between 1~3 $cmol{\cdot}kg^{-1}$, which was much lower than 6 $cmol{\cdot}kg^{-1}$, the least capacity for landscape planting. Therefore, these problems need to be solved.
This study has analyzed the vegetation structure to suggest a vegetation ecological restoration model by using the case of the afforestation for erosion control area with Pinus koreaiensis and Betula platyphylla, etc., on the hills of the Young-in mountains after its great fire in 2000. Of the area having a dimension of $1,152,404.3m^2$ selected as a survey site for the existing vegetation, the forest fire area accounted for 69.2% among which, brushwoods accounted the most for 24.67%. As a result of analysis of the 27 surveyed unit plots[unit dimension: $100m^2$] set up in consideration of the existing vegetation pattern and damaged state from the forest fire, the surveyed area was classified into 10 communities. Shrub layer's vegetation was found to be dominant in forest fire areas and the surveyed sites were classified into 5 plant communities, i.e. P. koraiensis community, Quercus variabilis community, P. thunbergii community, Q. serrata community, B. platyphylla community in forest fire areas, while non-forest fire areas were classified into 5 plant communities, such as P. densiflora community, Q. acutissima community, Q. serrata community, Q. mongolica-Q. serrata community, B. platyphylla community. Species diversity of forest fire areas was $0.3679{\sim}0.5907$ and that of non-forest fire areas was $0.5728{\sim}0.8865$. In addition, the number of the species in the forest fire areas was $5{\sim}8$ and that of non-forest areas was $8{\sim}12$; however, the population of forest fire areas$(156{\sim}456)$ was higher than that of non-forest fire areas$(61{\sim}227)$. In the analysis of growth density per layer$[of\;100m^2]$, there appeared $1{\sim}8$ trees of Q. mongolica and $3{\sim}5$ trees of Q. serrata in the upper layer species; $2{\sim}4$ trees of Q. serrata and one tree of Q. mongolica in the canopy layer. As for the characteristics of soil, acidity of forest fire areas was pH 5.45 and that of non-forest fire was pH 5.25. By setting up the middle D.B.H range of Q. mongolica-Q. serrata community as the vegetation restoration model, planting species, planting density and planting models are suggested.
One of the most important basic problems for developing the new techniques in the field of road landscape planting practices in Korea, is to clarify, analyse, and evaluate the existing technical level through actual field survey on the various kinds of planting techniques. This study is, therefore, aimed at the good grasp of detail essences of the existing level of road landscape planting techniques through field investigations of the executed sites. In this study, emphasized efforts are made to the detail analysis and systematic rearrangements of such main subjects as; 1) principles and functions of the road landscape planting techniques; 2) essential elements in planning of it; 3) advanced practices in execution of planting of it; 4) and improved methods in maintenance of plants and lands as an entire system of road landscape planting techniques. The road landscape planting techniques could be explained as the planting and landscaping practices to improve the road function through introduction of plants (green-environment) on and around the roads. The importances of these techniques have been recognized by the landscape architects and road engineers, and they also emphasize not on]y the establishment of road landscape features but also conservation of human's life environment by planting of suitable trees, shrubs, and other vegetations around the roads. It is essentially required to improve the present p]anting practices for establishment of the beautiful road landscape features, specially in planning, design, execution, establishment, and maintenance of plantings of the environmental conservation belts, roadside trees, footpathes, median strips, traffic islands, interchanges, rest areas, and including the adjoining route roads.
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