• 아시안잔디학회지
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• 제9권2호
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• pp.109-117
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• 1995

An investigation was performed to reveal the relation of the production and decomposition of the Zoysia japoni ica and Miscanthus sinensis litters on Mt.Kwanak. The decay constant k of litters was as follows; k of Zoysia japonica, k=0.44, k of Miscanthus sicensis, k=0.33 The time required for the decomposition of half of the accumulated organic matter of Zoysia japonice and Miscanthus sinensis was 1.6 and 2.1 years, respectively. The amount of mineral nutrients returned annually to soil is faster in the ZQvsia japonica grassland than in the Miscanthus sinensis grassland on Mt. Kwanak. Key words: Organic rnatter synthesis, Decomposition balance.

• 한국초지조사료학회지
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• 제38권4호
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• pp.298-309
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• 2018

본 연구는 산지생태축산이 가진 다원적 기능을 제시하고 그에 따른 가치를 평가하였다. 산지생태축산의 다원적 기능은 크게 직접이용가치, 간접이용가치, 유산가치의 세 가지로 분류할 수 있으며, 직접이용가치의 경우 조사료 및 축산물 생산과 같은 채집 기능과 레크리에이션 및 관광과 같은 비채집 기능이 존재한다. 간접이용가치의 경우 수자원 관리, 토양 침식 조절, 대기 조절, 경관, 축산분뇨처리, 산불확산억제 기능이 존재하며, 유산가치의 경우 종다양성 기능이 존재한다. 분석결과 산지생태축산 운영지 1ha의 연간가치는 직접이용가치 21,090,874원, 간접이용가치는 경관이 초지일 때 15,562,203원, 경관이 임간초지 일 때 16,018,224원으로 추정되었고, 유산가치의 경우 종다양성 가치로 멸종위기종의 개체수에 따라 최소 767,273원에서 최대 1,578,845원으로 추정되어, 다원적 가치의 총합은 최소 37,420,350원에서 최대 38,687,942원으로 분석되었다. 본 연구의 결과를 통하여 국내 산지생태축산 정책수립에 유용한 정보를 제공할 수 있을 것으로 판단된다.

• 한국환경생태학회지
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• 제34권6호
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• pp.558-572
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• 2020

본 연구는 백두대간 지리산권역 내 훼손지의 유형을 분류하고, 각 훼손 유형별 실태조사를 통해 훼손 정도를 파악하여 훼손지의 복원 방향을 제시하기 위한 기초자료로 활용하기 위해 수행되었다. 지리산권역의 훼손실태를 분석한 결과 전체 훼손지의 패치 수는 57개로 확인되었고, 평균고도가 낮고 경사가 완만한 지역일수록 훼손지의 패치 수 및 훼손 면적이 더 넓게 나타났다. 훼손 유형은 초지(폐경지)와 경작지의 비율이 높게 나타나 농업적 토지이용이 주요 훼손 요인으로 분석되었다. 이 중 14개소의 훼손지를 대상으로 실태조사를 수행한 결과, 훼손 유형은 초지, 경작지, 복원지, 벌채지 및 나지로 분류되었다. 각 유형별 교란정도(일년초 및 이년초의 비율, 도시화지수, 교란율)를 분석한 결과, 초지 및 경작지에서는 대부분 초본류로만 구성된 1층 구조의 단순한 식생구조와 교란정도가 높게 나타났다. 소나무 유묘가 다수 식재된 복원지의 경우 2층 구조의 식생구조가 나타났고, 복원사업으로 인한 교란과 인근의 등산로로 인해 귀화식물의 유입이 다른 훼손지에 비해 특히 높게 나타났다. 나지의 경우 고도가 높아 귀화식물의 유입은 낮았지만, 일년초와 이년초의 비율이 높게 나타나 조사된 모든 유형의 훼손지는 천이 초기단계로 판단되었다. 훼손 유형별 군락을 서열화한 결과, I 축상의 복원지, 경작지, 초지, 벌채지 및 나지 순으로 나타나 훼손 유형별로 구분되어 배열되는 경향을 보였다. 또한 훼손 유형별 조사지와 참조생태계의 군락을 서열화한 결과, 종조성의 차이를 확인할 수 있었다. 이처럼 생태적 복원 절차에 따라 식생정보에 기초한 훼손 유형별 실태를 진단하고, 진단 결과와 함께 참조생태계와의 종조성의 차이를 확인함으로써 향후 복원 목표 및 복원 방향 설정의 기초자료로 활용하고자 한다.

• The Korean Journal of Ecology
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• 제21권3호
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• pp.257-262
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• 1998

A syntaxonomical study about coastal sand dune vegetation in Kyungpook province was carried out. This study was accomplished by the methods of classical block-structure seeking and had-sorting of the $Z\"{u}rich-Montpellier$ School. The main purpose of this study is to clarify the syntaxonomical, synecological, syngeographical and syndynamical characteristics of coastal sand dune vegetation in Kyungpook province. The dune shrubs communities in Kyungpook province are consisted of 2 communities: Vitex rotundifolia community of southern type and Rosa rugosa community of northern type. And the dune grasslands communities are also consisted of 2 communities: Elymo-Caricetum kobomugi Ohba, miyawaki et $T\"{u}xen$ 1973 and carex kobomugi typical community. The subsidiary knowledges from this study will make possible to accumulate qualitative and quantitative information in the distribution pattern of coastal sand dune vegetation, and also will provide practical information for national biodiversity and conservation of coastal ecosystem.ecosystem.

• 한국조경학회지
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• 제27권4호
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• pp.131-136
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• 1999

Aerial videography techniques have been used to inventory conditions associated with grassland, forests, and agricultural crop production. Most recently, aerial videography has been used to verity satellite image classifications as part of the natural ecosystem survey. The objectives of this study were: (1) to use aerial video images of the study area, one part of Taean Seashore National Park, for the accuracy assessment, and (2) to determine the suitability of aerial videography as an accuracy assessment, of the land cover classification with Landsat-TM data. Video images were collected twice, summer and winter seasons, and divided into two kinds of images, wide angle and narrow angle images. Accuracy assessment methods include the calculation of the error matrix, the overall accuracy and kappa coefficient of agreement. This study indicates that aerial videography is an effective tool for accuracy assessment of the satellite image classifications of which features are relatively large and continuous. And it would be possible to overcome the limits of the present natural ecosystem survey method.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2020년도 춘계학술대회
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• pp.15-15
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• 2020

Commelina caroliniana Water, was founded in Jongdal-ri (Gujwa-eup, Jeju Island) for the first time, is widely distributed arable land near the coast and roads. C. caroliniana belongs to Commelinaceae and native to Bangladesh, India. This species can be distinguished from its allied species in Korea by several characters as followings: apex acuminate and obovate shape spathes, flowers have blue 3 petals, maroon spot on the antherode, fruit with 5 seeds in 3 ovaries. C. caroliniana is well known for its strong fertility, which can outcompate native grasses and further negatively effect on the grassland ecosystem. The species has already introduced and widely distributed across much of southeastern US and some of Asian countries. Considering the case of C. caroliniana's diffusion capacity and influence on the ecosystem, management system for prevent their spreading are required through monitoring. Given the great potential of spread found in C. caroliniana, continuous monitoring may be required.

• 한국환경과학회지
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• 제15권11호
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• pp.1077-1086
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• 2006

This study aims at analyzing relationships between land use and habitat types of winter wildbirds to provide basic understanding of ecosystem for preservation and restoration of urban ecosystem in the future. The research area is Hanam City. Researches on land use types showed Hanam City had 79.1% of greenspace and openspace, but intensive urban development has been taking place in greenspace that is adjacent to urban districts. This has brought the problems of lack of greenspace in urban districts and damages to cultivated areas and grassland. A total of 61 and 8,642 populations of winter wildbird species were observed in research areas. Paradoxornis webbiann(16.91), Passer montanus(11.93), Pica pica(6.88) were dominant species. When they were divided according to habitat types, 20 species of interior species, 8 species of interior-edge generalist species, 12 species of edge species and 3 species of urban species were observed. When which land use type was mostly served as wildbirds habitats was examined, urban species(3 species and 290 populations) was a dominant species in urban districts while in greenspace and openspaece, water species(19species and 3,075 populations) including winter migratory birds was. Among greenspace and openspaece, edge species was dominant in forest while urban species was a dominant species in cultivated areas. This shows there is a need to improve diversity of wildbirds through restoration of cultivated areas in the central part of Hanam City.

• 한국환경복원기술학회지
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• 제18권1호
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• pp.127-133
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• 2015

Interests in ecosystem services have increased and a number of attempts to perform a quantitative valuation on them have been undertaken. To classify the ecosystem types landcover classification maps are generally used. However, some forest types on landcover classification maps have a number of errors. The purpose of this study is to verify the forest types on the landcover map by using a variety of field survey data and to suggest an improved method for forest type classifications. Forest types are compared by overlaying the landcover classification map with the 4th forest type map, and then they are verified by using National Forest Inventory, 3rd National Ecosystem Survey and field survey data. Misclassifications of forest types are found on the forest on the forest type map and farm and other grassland on the landcover map. Some errors of forest types occur at Daegu, Busan and Ulsan metropolitan cities and Gangwon province. The results of accuracy in comprehensive classification show that deciduous forest is 76.1%; coniferous forest is 54.0%; and mixed forest is 22.2%. In order to increase the classification accuracy of forest types a number of remote sensing images during various time periods should be used and the survey period of NFI and the National Forest Inventory and National Ecosystem Survey should be consistent. Also, examining areas with wide forest patch should be prioritized during the field survey in order to decrease any errors.

• 한국초지조사료학회지
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• 제4권3호
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• pp.220-225
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• 1984

1. 낙동강(洛東江) 하류(下流) 갈대군락(群落)에서 유기탄소(有機炭素)의 생성(生成), 분해(分解) 및 축적(蓄積)을 이론적(理論的) 분석(分析)에 의(衣)해서 평가하였다. 2. $m^2$당(當) 낙엽(落葉)의 유기물(有機物), 유기탄소(有機炭素)의 함량(含量)은 각각(各各)이였으며 초지상(草地床)의 함량(含量)은 1154.96g과 669.93g 이었다. 3. 시별(尸別) 유기물(有機物), 유기탄소(有機炭素)의 함량(含量)은 광합성부(光合成部)에서는 120-140cm에 가장 많았으며, 비광합성부(非光合成部)에서는 0-20cm에 가장 많았다. 4. 안정(安定)된 상태(狀態)의 초지생태계(草地生態系)에서 년(年) 낙엽(落葉) 총생산량(總生産量)과 토양(土壤)의 윗부분(F, H 및 A층)의 비(比)로 결정(決定)된 분해상수(分解常數) k는 0.884이었다. 5. 낙동강(洛東江) 하류(下流) 갈대군락(群落)에서 유기탄소(有機炭素) 50%. 95%, 99%가 분해(分解)되는데 걸리는 시간(時間)은 각각(各各) 0.784, 3.394. 5.656년(年)이었다.

• 아시안잔디학회지
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• 제10권4호
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• pp.305-313
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• 1996

This study was carried out to investigate the removal rates of Cd and Pb of the litters in the Phragmites communis. Miscanthus sacchariflorus, Typha angustata, Scirpus tabernaemontani grassland aquatic ecosystem in the lake Paldangho. The annual production of Cd and Pb were 0.005g /$m^2$ , 0.21g /$m^2$in P. commumis, 0.004g /$m^2$, O.08g /$m^2$ in M. sacchariflorus, 0.023g /$m^2$, 0.42g /$m^2$ in T. angustata and 0.020g /$m^2$, 0.23g /$m^2$ in S. tabernaemontani respectively. The removal rates of Cd and Pb of the litters were 0.83, 0.85 in P. communis. 0.36, 0.54 in M. sacchariflorus, 0.61, 0.51 in T. angustata and 0.76, 0.71 in S. tabernaemontani, respectively. The times required to decay 50, 95, 99 percent of the steady state level and turnover values of cadmium on the grassland floor were 0.83, 3,60, 6.00 years in P. communis. 1.90, 8.24, 13.74 years in M.sacchariflorus, 1.15, 4.96, 8.27 years in T. angustata and 0.91, 3.95, 6.58 years in S. tabernaemontani The times required to decay 50, 95, 99 percent of the steady state level and turnover values of lead on the grassland floor were 0.81, 3.51, 5.86 years in P. communis. 1.28, 5.56, 9.26 years in M. sacchariflorus, 1.37, 5.94, 9.90 years in T. angustata and 0.97, 4.21, 7.02 years in S. tabernaemontani. Key words: Removal rate, Accumulation, Paldangho, Cadmium, Lead, Phragmites communis Miseanthus sacchariflorus, Typha angustata, Scirpus tabernaemontani.