• 한국해양공학회지
• /
• 제21권2호
• /
• pp.22-34
• /
• 2007

We present basic data for developing new research topics and closely examine the existing data on the development and organization of the Nakdong River Estuary Delta by analyzing various studies of the area, including ocean engineering, coastal engineering, ocean environmental engineering, geomorphological, and geological studies. We first defined the general concepts related to the estuary and delta and reviewed the historical development of the Nakdong River Estuary Delta over the past 100 years. We then examined the origin and core elements of the estuary deposits that constitute the delta. In addition, we scrutinized the main factors affecting the development of the delta and analyzed existing research on delta development mechanisms by core researchers. The construction of an estuary barrage is one of the main factors effecting estuarine circulation and has altered the physical oceanic environment, area of deposition, atmospheric environment, and vegetation community of the delta. These factors affect the estuary circulation in turn, altering the delta. Along the Nakdong River, an unsteady-state sandy barrier appears at approximately three times the distance of the wavelength of incident offshore waves, and this terrain forms approximately 10-15 years after reclamation in the interdistributary upper stream and transforms the shoreline. It is necessary to develop a technique to predict terrain change that reproduces the erosion and accumulation of estuarine deposits. To determine the parameters and variables necessary to reproduce this system, continuous on-site monitoring is necessary. The existing research did not fully examine the terrain changes in Nakdong River Estuary or the periodic developmental characteristics. To understand the future process of estuary delta development, it is necessary to establish an integrated management system.

• 한국측량학회지
• /
• 제34권2호
• /
• pp.185-194
• /
• 2016

The purpose of this study is to present a method to provide environment information based on spatial information document. At present, a lot of spatial information, including environment information, is being produced, but separate software or system is required for the user to acquire the information. In particular, in the case of environment information, various types of information are being produced, such as ecology, vegetation and measurement network data. Therefore, it is necessary to present the form and the making method of spatial information document that allows using environment information as spatial information without separate software or system. To provide spatial information document-based environment information, types and forms of environment information, data format and offering methods produced by the government, in particular, the Ministry of Environment and the local governments, are analyzed. 12 fields are classified and the form of produced data is GIS DB, measurement network data, text data and so on. With decrease of paper maps, spatial information document that offers display by layer, coordinate data, attribute data, distance and area measurement, location search by coordinates, GPS location linkage and location display on the map is presented to increase utilization of geo-environment information maps. Finally, the standard document specification based on spatial information document is presented in consideration of usability and readability in order to provide a variety of environment information without separate software or system.

• 한국환경복원기술학회지
• /
• 제19권3호
• /
• pp.11-27
• /
• 2016

This study is a survey of the flora distributed in Seocheon tidal flat wetland protected area of nearby island (Daejuk-do, Tokki-deung, Muk-do) and Yubo-do Seocheon-gun Chuncheongnam-do, Korea. The numbers of vascular plants were summarized as 231 taxa including 65 families, 167 genera, 204 species, 2 subspecies, 23 varieties and 2 forms. The halophytes were 33 taxa including 15 families, 29 genera, 29 species, 3 varieties and 1 form (Chenopodium album var. stenophyllum, Cnidium japonicum, Juncus haenkei and so on). The rare plants were 4 taxa including Pseudoraphis ukishiba (VU), Belamcanda chinensis (VU), Phacelurus latifolius (LC) and Polygonum bellardii (DD). The Korean endemic plants were 2 taxa including Salix pseudolasiogyne and Forsythia koreana. In the specific plants by floristic region were 24 taxa, a degree I were 19 taxa (Rhodotypos scandens, Zanthoxylum planispinum, Cynodon dactylon and so on), 2 taxa of a degree III (Elymus mollis and Asparagus oligoclonos), 3 taxa of a degree IV (Polygonum bellardii, Wisteria floribunda and Pseudoraphis ukishiba) and degree II, V were not found. The naturalized plants were 40 taxa including Phytolacca americana, Sicyos angulatus, Lactuca scariola and so on. Naturalization rate (NR) was 17.3% of all 231 taxa of vascular plants and urbanization index (UI) was 12.5% of all 321 taxa of naturalized plants. This study was performed to used as a basic data to identify the protected from plant ecosystems of type classify into analyze the vegetation characteristic of based on flora distributed in Yubu-do and nearby islands.

• 한국자원식물학회지
• /
• 제25권6호
• /
• pp.719-730
• /
• 2012

This study was conducted to investigate the environmental characteristics of natural habitats, and the genetic variations in samples from 19 different quadrates of Asplenium scolopendrium 10 habitats. The natural habitats of A. scolopendrium were located at an altitudes 110-973 m with inclinations of $7-30^{\circ}$. All the quadrates were located on north facing slopes. The average field capacity of the soil is 31.4%, with organic matter at 16.7%, and the pH is 5.84. The soil texture was confirmed as sandy loam in 8 habitats and silt loam in 2 habitats. A total of 214 vascular plants were identified from 10 habitats. The importance value of the herbaceous layer (H) was the highest in A. scolopendrium, at 10.4%, followed by Arachniodes standishii (7.3%), Dryopteris crassirhizoma (6.5%), and Polystichum tripteron (5.3%), which implies that the natural habitats of A. scolopendrium are affinity with ferns. The species diversity of A. scolopendrium was estimated as on average 1.09, while the dominance and evenness were 0.12 and 0.87, respectively. The result of the RAPD analysis, among 59 bands amplified with a primer, 25 (42.4%) showed polymorphism. Twenty-one individuals of 10 habitats could be classified into four groups with similarity coefficient values ranging from 0.74 to 1.0. Mt. Mullae and Geumdaebong populations shows basal branching within the 21 individuals. Ulleung-do island and Jeju-do island population forms an independent clade, respectively. Mt. Moak and Byeonsan-bando clade formed a sister to the Ulleung-do island and Jeju-do island clade.

• The Korean Journal of Ecology
• /
• 제26권5호
• /
• pp.255-261
• /
• 2003

To analyze ecological characteristics of the Ulmus pumila community, an on-the-spot survey was conducted in August, 1998 in the Dong River, Gangwon-do, South Korea. The Ulmus pumila community is partially distributed in Dong River's midstream and upper stream. Topographical characteristics of this community are significant in the point bar or sandbank of the river. The community is classified into two types, disturbed and non-disturbed types, by the effect of flooding. The Ulmus pumila community (bush forests of Siberian elms) is a representative community which forms riparian forests, but its distribution is rare in South Korea. Only in Dong River is the Ulmus pumila distributed enough to form a community, and none is known that is lager than this community in South Korea. The non-disturbance type progresses more homogeneously than the disturbance type because it is formed on riverside banks where it is affected less by flooding. We concluded that the Ulmus pumila community in this study area has characteristics of riparian forests. In South Korea, Ulmus pumila community can be regarded as important element of vegetation landscape constituting riparian forests. Specifically, these riparian forests are evaluated as high in conservation value due to their being formed spontaneously. Moreover, Dong River is regarded as the southern limit of Ulmus pumila, which has a northern origin. The species or community needs continuous interests and conservation countermeasures because there are limitations in its spread of distribution by natural or artificial efforts.

• 농촌계획
• /
• 제17권3호
• /
• pp.103-111
• /
• 2011

The purpose of this study is to review foreign scenic inventory map for the systematic management of natural scenic resources. Several foreign cases were surveyed and analyzed to apply the scenery inventory map in domestic, such as Visual Resource Management(VRM) from United States Bureau of Land Management, Scenery Management System(SMS) from USDA Forest Service and Visual Landscape Inventory(VLI) from British Columbia Ministry of Forest's, that were already established scenery inventory maps. The results are as follows. First, the characteristic of Korean landscape is quite a different from those of north american's, which is much smaller and more complex in topography and land use. So, it would be difficult to apply foreign system directly and we need more researches to our own system. The multi-stepped landscape unit system is highly recommended. Second, scenic quality could be estimated by the pre-built database, such as land forms, vegetation, hydrology and land uses. Historical and cultural attributes should be complemented. Third, existing scenic integrity could be grasped by scenic damage, landscape alteration caused by human activities and land exfoliation. Also, subjective evaluation method should be supplemented by objective criteria through further detailed studies. Finally, about landscape view conditions, landscape control points should be surveyed and established in advance, and viewing distance, viewing frequency, amount of observers and public interests should be considered.

• 한국환경생태학회지
• /
• 제20권1호
• /
• pp.41-51
• /
• 2006

우이도 해안사구의 식물상을 조사한 결과, 52과 108속 124종 15변종 3품종 총 142종류가 확인되었다. 식물구계학적 특정식물종에는 3등급에 갯그령, 솔장다리, 틸머위 3종류, 1등급에 갯쇠보리, 통보리사초, 갯방풍, 모래지치 등의 사구식물들과 후박나무, 보리밥나무, 해국 등의 해안식물들이 포함되어 총 16종류가 확인되었다. 또한, 귀화식물에는 7과 10속 11종류로 조사되었으며, 총 출현하는 식물상에 대한 귀화율은 약7.8%로 분석되었다. 식생군집 조사 중 돈목해안지역에는 2002년도에 전체 피복율이 약$20%{\sim}25%$정도가 확인되었으나, 본 조사에서는 $65%{\sim}75%$로 3배 이상의 사구식물들이 높게 출현하였다. 성촌해안지 역 또한 2002년도 조사에서는 식생 피복율이 $15%{\sim}20%$ 정도이었으나, 본 조사에서 왕잔디와 통보리사초가 급속도로 증가하여 전체 피복율이 $70%{\sim}75%$정도로 증가하였다. 풍성사구 지역은 강한 바람과 모래의 유출유입이 반복되면서 사구식물의 종수나 개체수가 단조로운 경향을 나타냈다.

• 환경생물
• /
• 제19권2호
• /
• pp.113-118
• /
• 2001

본 연구는 자연생태관 조성계획지인 강원도 평창군 용평면 노동리 노동계곡을 대상으로 식생조사를 실시하여 자연생태관 조성에 필요한 기초자료를 제공하고자 수행되었다. 노동계곡의 조사구에서 출현한 관속식물은 총 56과 121속 152종 24변종 2품종이며, 본 조사에서 감소추세종으로 관중과 도깨비부채가, 한국특산종으로 노랑무늬붓꽃이 출현하였다. 식물군락은 자연군락인 신갈나무-당단풍군락과 인공군락인 일본잎갈나무군락, 잣나무군락으로 구분되었으며, 신갈나무-당단풍군락은 다시 소나무아군락, 고로쇠나무아군락으로 구분되었다. 한국특산종으로 구분된 노랑무의붓꽃은 고로쇠나무아군락에 분포하였으며, 자연생태관을 조성할 때 이 군락에 대한 보존 관리방안을 마련해야 할 것으로 판단된다.

• 대한원격탐사학회지
• /
• 제33권5_2호
• /
• pp.751-762
• /
• 2017

작황 정보 시스템은 작물 분포, 작황 정보 및 생산량에 대한 모니터링, 예측, 추정 또는 분석과 같은 다양한 형태를 통해 정보를 제공하며 본 논문은 한국, 미국 및 중국 데이터를 기반으로 구축한 웹기반 작황 정보 시스템을 제안한다. 온도, 강수량 및 일사량의 기후 데이터는 작물 성장에 미치는 영향을 분석하는데 사용되었으며, NDVI 데이터와 작물구분도 데이터는 각각 작물 모니터링과 작물 분포 관리를 목적으로 사용되었다. 본 시스템은 3가지의 주요 장점을 갖고 있으며 이는 다음과 같다: 1) 높은 시간 해상도의 데이터를 통한 정보 제공, 2) 보유 데이터 분석을 통한 보고서 작성의 자동화, 3) 사용자의 편리성을 위한 기능 제공.

• 한국자원식물학회지
• /
• 제20권1호
• /
• pp.50-62
• /
• 2007

본 연구는 시화호 갈대습지공원내의 식물상 현황과 분포를 파악하여 본 지역의 식생생태계 관리 및 보전과 향후 지속적인 식생모니터링(Vegetation monitoring)을 위한 기초 자료로 활용하고자 수행되었다. 시화호 갈대습지공원내 반월천, 동화천 및 삼화천에서 조사된 관속식물은 72과 175속 201종 38변종 2품종 1재배종으로 총 242분류군이 확인되었으며, 이중 식재종이 92분류군(38.0%), 자생종이 150분류군(62.0%)을 차지하였다. 또한, 염생식물은 5과 9속 12종 1변종으로 총 13분류군(5.4%), 귀화식물은 17과 41속 45종 1변종으로 총 46분류군이 확인되었으며, 19.0%의 귀화율과 17.0%의 도시화지수로 분석되었다.