• 한국지하수토양환경학회지:지하수토양환경
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• 제28권5호
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• pp.68-77
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• 2023

The effect of soil damage on the physicochemical characteristics and activity of the soil microbial community is not well known. This study investigates this relationship by analyzing 11 soil samples collected from various points of soil damage across Gyeonggi-do. Soil damage resulted from forest fires, landslides, and development areas, with their impacts most severe on the topsoil layer (0-30 cm). Dehydrogenase and β-glucosidase activities were notably higher at locations damaged by forest fires compared to other sites. While enzyme activities in soils influenced by landslides and development areas were relatively low, sites with a pollution history exhibited elevated dehydrogenase activity, likely due to past microbial response to the pollution. Additionally, an assessment of carbon substrate usability by soil microorganisms indicated higher substrate availability in areas impacted by forest fires, contrasting with lower availability in landslide and development sites. Statistical analysis revealed a positive correlation between organic content of sand and clay and microbial activity. These findings provide valuable insights into soil damage and associated restoration research, as well as management strategies.

• 한국환경복원기술학회지
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• 제18권6호
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• pp.97-110
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• 2015

This study aimed to classify damaged lands, to find what are the damage factors affecting the studied area, and to present a prescription in order to provide some benefit for the restoration of Regional Ecological Network at Chungnam province. Finally we classified damaged lands from 1st to 4th damaged lands according to relative intensity of damage. The main damage factors for the First Damage Lands were humus horizon, soil hardness and plant species richness. In the Second Damage Lands, those were soil hardness, plant species richness, number of plants and dominant plant species. In the Third Damage Lands, those were humus horizon, soil hardness, plant species richness, number of plants and dominant plant species. In the Fourth Damage Lands, those were humus horizon, organic matter, soil hardness, EC, T-N content, plant species richness, number of plants and dominant plant species. In every cases, the damage of soil and vegetation was originated due to development carried out by human being. The changes in soil condition were not big enough for it to affect plant growth, however, degradation of vegetation was still severe.

• 한국환경복원기술학회지
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• 제19권1호
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• pp.121-133
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• 2016

It was required to evaluate ecological restorations in a comprehensive way in order to systematically manage conservation areas such as DMZ and national parks in South Korea. In this research we developed a new approach to evaluating ecological restorations with more various indexes than vegetation covering-related indexes. By analyzing damaged areas in the vicinity of DMZ, major damaged types were identified as six classes: landform modification, surface loss, soil pollution, soil physio-chemical modification, vegetation decline and vegetation damaged. From literature review, 39 indexes were selected and were grouped into four divisions: soil property, vegetation growth & structure, habitat property and landscape structure & functions. By conducting a survey with the selected indexes targeting relevant experts, data on relative importance among the divisions and indexes by damaged type were collected. As a result, it was found that the orders and values of weighted values of the divisions were different by damaged type: for example, soil property (0.402), vegetation growth & structure (0.209), habitat property (0.225), landscape structure & function (0.163) for "landform modification"; but soil property (0.171), vegetation growth & structure (0.401), habitat property (0.270), landscape structure & function (0.158) for "vegetation decline". Similarly, evaluation indexes showed different orders and values of relative importance, easiness in field measurement and representativeness for the division by damaged type, and the values were used for calculating importance factor for each index. In the evaluation table, score1 and score2 were made by the importance factors of indexes multiplied by distribution values which present grades and by the weighted values of divisions. In conclusion, while dealing with the damaged type was considered significant for evaluating and managing restorations, further tests on this table with a range of cases were needed to improve its quality.

• 한국환경생태학회지
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• 제29권6호
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• pp.923-928
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• 2015

본 연구에서는 산림생태계 훼손 유형별 표토의 이화학적 특성 비교와 식재기반 조성 재료로서의 활용 여부를 평가하였다. 표토는 산림생태계 훼손 유형별 훼손지역 12개 지역, 36개 지점과 각 훼손지 주변에 위치한 자연지역 12개 지역, 36개 지점, 총 72개 지점에서 채취하여 분석하였다. 분석 결과, 자연지역의 토성은 식양토~사양토, 용적밀도는 $0.95{\sim}1.10Mg/m^3$, 고상률은 $35.7{\sim}44.0m^3/m^3$, 공극률은 $56.0{\sim}64.3m^3/m^3$, 내수성입단율은 8.4~35.8%, 토양경도는 5~13 mm, 토양산도는 5.3~6.1, 전기전도도는 0.14~0.65 dS/m, 전질소량은 0.28~0.42%, 양이온치환용량은 $14{\sim}22cmol^+/kg$, 치환성칼륨함량은 $0.15{\sim}0.31cmol^+/kg$, 치환성칼슘함량은 $2.07{\sim}2.84cmol^+/kg$, 치환성마그네슘함량은 $0.45{\sim}1.97cmol^+/kg$, 유효인산함량은 17~96 mg/kg, 유기물함량은 3.2~5.6%의 범위를 나타냈으며, 훼손지역의 토성은 식양토~양질사토, 용적밀도는 $1.54{\sim}1.75Mg/m^3$, 고상률은 $52.8{\sim}58.0m^3/m^3$, 공극률은 $42.0{\sim}47.2m^3/m^3$, 내수성입단율은 4.2~22.5%, 토양경도는 13~25 mm, 토양산도는 4.8~5.5, 전기전도도는 0.13~0.62 dS/m, 전질소량은 0.02~0.12%, 양이온치환용량은 $5{\sim}15cmol^+/kg$, 치환성칼륨함량은 $0.11{\sim}0.18cmol^+/kg$, 치환성칼슘함량은 $0.45{\sim}2.36cmol^+/kg$, 치환성마그네슘함량은 $0.39{\sim}0.96cmol^+/kg$, 유효인산함량은 15~257 mg/kg, 유기물함량은 0.4~2.2%의 범위를 나타냈다. 자연지역과 훼손지역 표토의 이화학적 특성 비교를 통해 훼손지역 표토가 자연지역 표토에 비해 이화학적 특성이 악화되었음을 확인할 수 있었다. 이에 향후 표토 재활용을 위한 보전 및 관리 대책이 필요한 것으로 판단되었다.

• 한국환경복원기술학회지
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• 제23권6호
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• pp.15-28
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• 2020

Urbanization and industrialization have caused increasing damage to national lands, and ecological restoration has proceeded without any specific assessment of this damage. The purpose of this study is to select indices to assess damaged areas through literature review and panel discussions, and to derive the importance of damaged area assessment indices by analyzing them through the Analytic Hierarchy Process (AHP). This study has derived, via literature review, six types of damage and a total of 18 related assessment indices. A total of 51 responses were collected from surveys and given to experts, and an AHP analysis conducted. As a result of the analysis, "Landform change (0.268)" was of the highest importance, with associated damage types as follows: "Soil contamination (0.193)", "Vegetation damaged (0.149)", "Surface soil loss (0.143)", "Change in soil physiochemical property (0.125)", and "Vegetation decline (0.122)". The analysis determined that the item of the highest importance in the overall assessment of damage was "Slope occurred area (0.100)", and that "Conductivity (0.022)" was of the lowest importance. This study can be presented as a criterion in determining the type and degree of damage in setting priorities for future ecological restoration projects.

• 농업생명과학연구
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• 제43권2호
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• pp.9-15
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• 2009

본 연구는 소나무재선충병의 피해를 받은 토양생태계의 합리적인 관리를 위한 기초정보를 제공할 목적으로 이루어졌다. 토양온도와 수분함량은 완전벌채지 $15.3{^{\circ}C}$, 11.5%, 일부벌채지 $14.4{^{\circ}C}$, 13.5%, 대조구 $13.7{^{\circ}C}$, 14.8%로 나타났다. 토양유기물 함량은 완전벌채지가 2.11~2.64%, 일부벌채지 2.26~3.33%, 대조구 2.27~3.10%의 범위에 있은 것으로 분석되었다. 토양호흡량은 계절적인 차이가 있었는데 여름철에 높았으며, 토양온도와 정의 상관이 있는 것으로 나타났다. 평균 토양호흡량은 완전벌채지 0.24, 일부벌채지 0.36, 대조구 $0.32gCO_{2}/m^{2}/hr$로 나타나 소나무재선충 피해목만 벌채한 일부벌채지의 토양호흡량이 가장 높은 것으로 분석되었다. 소나무재선충병 피해지 산림토양의 $Q_{10}$값은 2.39에서 2.68 사이에 있는 것으로 나타났다. 조사기간을 통한 년간 토양호흡량은 완전벌채지, 일부벌채지, 대조구에서 각각 8.1, 15.6, $14.6tCO_{2}/ha/yr$으로 분석되었다.

• 한국지반신소재학회논문집
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• 제21권4호
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• pp.123-134
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• 2022

1990년대 중반 이래로 경제성과 시공성이 우수한 보강토옹벽이 콘크리트 옹벽을 급속도로 대체하였다. 보강토옹벽의 적용이 증가하면서 피해사례 또한 증가하고 있다. 보강토옹벽의 파손은 주로 부적절한 설계와 시공관리에 기인하는 경우가 많다. 본 논문에서는 보강토옹벽 상부 및 배면으로의 유입수로 인해 피해가 발생한 2개소 현장을 대상으로 피해 발생 원인을 검토하고 복구대책을 제안하였다. 일련의 현장 지반조사를 통해 손상된 보강토옹벽의 피해발생 원인과 손상정도를 파악하였으며, 손상 범위 및 정도를 고려하여 쏘일네일링으로 보강토체를 보강하는 방안을 제시하였다.

• 한국환경복원기술학회지
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• 제13권3호
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• pp.73-83
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• 2010

A technology using continuous fiber soil reinforcement system for the creation of ecological restoration in a damaged area has been developed and introduced. The continuous fiber soil reinforcement system (Geofiber system) is an environmentally friendly slope protection technique that continuous fiber soil reinforced layers are constructed with green plantation on cut slope. The characteristics of this system in terms of the strength and hydraulic performance, and the vegetation were investigated in this study. The main objectives of this comparative study was to quantify the potential contribution of geofiber system for the revegetation on the cut slope in a damaged area. A Geofiber system was constructed to reinforce the lower layer of slopes and revegetation methods including wood chips were carried out on the upper layer by machineries. The results of monitoring during 3 years on cut slopes were as follows : 1) All the quadrat existed in the proper range for vegetation. 2) Species richness was 4.4 (site-1) and 18.5 (site-2) respectively. 3) The averaged coverage rates of quadrats was 90%. It is remarkable that the continuous fiber soil reinforcement system would be capable of applying to a damaged area and also would serve maintaining a healthier environment for floras. However, it behooves to continue monitoring on succession of vegetation for ecological restoration.

• 임산에너지
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• 제23권1호
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• pp.19-25
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• 2004

본 연구의 목적은 현재 산림쇠퇴 징후가 나타나고 있는 반월공단지역에 식재되어 있는 잣나무와 리기다소나무의 생장저하 실태와 광합성 특성을 밝히는데 있다. 이를 위해 안산시 전망대공원에 피해구를, 경기도 광주시에 소재하고 있는 경희대학교 연습림에 대조구를 선정하여 인공식재된 약 10년생의 잣나무와 리기다소나무 2수종을 비교하였다. 잣나무 및 리기다소나무 2수종 모두 피해구에서 생장량이 감소하였으며, 침엽의 잔존율도 저하하였다. 또한 2수종 모두 피해구에서 대조구에 비하여 순광합성속도가 저하하였고, 광-광합성곡선의 초기기울기인 양자수율도 저하하였다. 클로로필 a+b, b의 함량도 피해구에서 감소하였으며, 이 결과는 침엽의 연령이 증가함에 따라서 집광운반능력이 낮아져 침엽의 잔존율이 낮아지는 결과를 초래하였다고 생각된다. 이상의 결과로부터 최근 대기오염이 심한 반월공단지역에서 생육하고 있는 잣나무 및 리기다소나무의 생장감소 원인은 침엽의 클로로필 함량이 광화학계의 활성을 저하시켜 광합성 능력이 감소되어 최종적으로 생장감소를 초래한 것으로 판단된다.

• 유기물자원화
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• 제13권2호
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• pp.85-90
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• 2005

산불로 훼손된 토양 미생물군집의 생화학적, 유전적 다양성을 비교하기 위하여 2000년에 산불이 일어났던 강릉지역에서 자연복원지 토양(NS), 인공복원지 토양(AS), 정상토양(NS)을 표토층과 심토층에서 채집하였다. 생화학적 다양성 분석을 위해 각 시료를 BIOLOG system에 직접 적용하였으며 통계처리(SPSS)를 통해 군집분석을 수행하였다. 또한 군집의 유전적 다양성은 토양 미생물의 16S-rDNA를 증폭하여 DGGE(Denaturing Gradient Gel Electrophoresis)를 이용하여 분석하였다. 자연복원지의 심토와 표토, 정상토양의 표토에서만 70% 이상의 생화학적 다양성이 나타났으나, 유전적 다양성의 경우 모든 시료에서 53%에서 68%의 범위의 상동성을 나타냈다. 이러한 결과는 토양미생물 군집의 생화학적 다양성이 반드시 유전적 다양성을 반영하지 않는다는 것을 보여준다.