영산강 유역에 서식하는 수달의 서식지 이용 특성분석

하정욱 ( Ha¸ Jeong-wook ),안경환 ( Ahn¸ Kyung-hwan ),배양섭 ( Bae¸ Yang-sup ),김형후 ( Kim¸ Hyung-hoo ),신화용 ( Shin¸ Hwa-yong ),송세규 ( Song¸ Se-kyu ) 한국도서(섬)학회 2020 韓國島嶼硏究 Vol.32 No.4

수달은 하천을 주 서식지로 이용하기 때문에 하천 주변 서식지의 훼손은 개체군 변화에 큰 영향을 준다. 본 연구에서는 2012년 5월부터 2014년 4월까지 영산강 하구와 제1 지류하천이 속한 행정권역을 중심으로 5개 권역으로 구분하여 영산강 유역에 서식하는 수달의 서식지 이용을 알아보았다. 조사지역은 하천별로 4㎞ 간격을 두었고, 총 238지점에 대하여 계절별로 최소 1회씩 총 8회 조사를 실시하였다. 본 연구에서 총 238개 수달 조사 지점의 수달 서식흔적 분석에서는 권역별로 유의미한 차이를 확인할 수 없었다. 154개 지점에서 발견된 수달의 흔적수는 권역별로 유의한 차이가 있었다(F=3.329, p<0.05, d.f.=4). Ⅰ권역과 Ⅱ권역이 다른 권역들에 비해 발견된 흔적 수가 많았고, Ⅲ, Ⅳ, Ⅴ권역이 상대적으로 발견된 흔적 수가 적었다. 이는 Ⅲ, Ⅳ, Ⅴ권역이 다른 권역에 비해 시가화 지역이 넓거나 승촌보, 죽산보와 같이 주변이 노출되어 있고 하천 흐름이 정체된 지역(Ⅲ권역) 하천공사 등의 인위적 교란이 높은 지역(Ⅳ권 역)은 다른 지역에 비해 활동이 소극적으로 나타나 권역에 따라서 흔적 발견개수는 유의미한 차이를 보였다. 반면, 인위적 교란과 훼손 강도가 상대적으로 낮고 수질이 양호한 중·상류 지역은 수달 서식흔적 확인 빈도 높게 나타났다. 수달의 흔적이 발견되는 장소는 권역별로 부분적인 차이는 있었으나 대부분 교량하부와 바윗돌이 가장 많았다. 수달에게 교량하부나 바윗돌과 같은 지역은 체온유지를 위해 털을 말리거나 영역 표시, 먹이 자원을 관망하는 장소로 매우 중요한 역할을 하기 때문으로 판단된다. 계절별 수달 서식흔적 차이에 관한 분석에서 봄과 가을에 서식 흔적 확인 빈도가 높았으나 여름과 겨울은 비교적 서식 확인 빈도가 낮게 나타났다. 이러한 결과는 수달의 경우 여름과 가을은 출산 및 수유기로 새끼가 태어난 후 2개월 동안은 어미가 하루 종일 새끼와 함께 서식 굴에 있으면서 하루에 한 번만 먹이활동을 하기 때문이다. 또한 여름철 장마로 인한 하천 수위 상승으로 바위지역 등과 같이 수달이 배설지로 이용하는 지역이 감소하거나 고수위에 노출된 바위 지역이라도 장마에 따른 빗물로 인해 흔적이 씻겨 내려간 것이 원인이다. 겨울철은 하천의 결빙으로 인해 먹이활동이 용이하지 않기 때문에 서식흔적의 확인율이 낮은 것으로 판단된다. 영산강 유역에 서식하는 수달의 서식지 이용에 관한 정확한 자료 확보를 위한 보완의 방법으로 무인카메라나 무선추적 등을 활용한 조사 방법이 병행되어야 할 것이다. 수달의 서식지 취약성을 개선하기 위한 노력이 필요하며 하천환경의 건강성(수량, 수질 등)과 수달의 서식지와의 상관관계를 살펴보는 상세한 연구가 보완되어야 할 것이다. Since otters use the river as their main habitat, damage to the habitat around the river has a great impact on their population changes. In this study, from May 2012 to April 2014, the use of habitats of otters living in the Yeongsan River was surveyed by dividing them into five areas, centering on the administrative area in which the Youngsan River estuary and the first tributary river belong. The survey area was separated by 4km for each river and a total of 8 surveys were conducted at least once per season for a total of 238 points. In this study, in the analysis of otter signs at a total of 238 otter survey sites, no significant differences were found for each region. The number of otter signs found at 154 spots was statistically significantly different by region (F=3.329, p<0.05, d.f.=4). Areas Ⅰ and Ⅱ had more traces than the other areas, and areas Ⅲ, Ⅳ, and Ⅴ had relatively few traces. Areas Ⅲ, Ⅳ, and Ⅴ have wider urbanization than other areas or are exposed in surroundings such as Seungchon-bo and Juksan-bo. Areas where the river flow is stagnant (area Ⅲ) and areas with high artificial disturbances (area Ⅳ) showed that their activities were more passive than other areas. Therefore there was a significant difference in the number of signs. On the other hand, in the middle and upper stream areas where the intensity of artificial disturbance * 한국수달보호협회 and damage was relatively low and the water quality was good, the frequency of otter habitat traces was high. The places where the traces of otters were found were partially different by region, but most of them were at the base of the bridges and nearby rocks. For otters, areas such as the lower part of bridges and rocks are considered to play a very important role as a place to dry their hair, mark their territories, and observe food resources to maintain body temperature. In the analysis of the difference in signs of otters by season, the frequency of habitat traces was high in spring and autumn, but the frequency of habitat traces was relatively low in summer and winter(6.42, p<0.1, df=3). This result is because otters are born and the lactation period is in the summer and autumn, and for two months after the pup is born, the mother stays in the habitat with the pup all day and feeds only once a day (Kruuk, 2006). In addition, due to the rise in river water levels caused by the rainy season in the summer, the areas used for excretion by otters such as rocky areas decrease, or even in rocky areas exposed to high water levels, and also are washed down by rainwater. In winter, it is considered that the rate of finding habitat traces is low because feeding activities are not easy due to freezing of the river. As a complementary method to secure accurate data on the use of habitats of otters living in the Youngsan River watershed area, a survey method using sensor cameras or Radio-Telemetry Systems should be used in parallel. Efforts are needed to improve the habitat vulnerability of otters, and detailed studies on the relationship between the health (quantity, water quality, etc.) of the river environment and the habitat of otters should be supplemented.

남강댐하류의 물리적 하천교란 평가

김기홍,Kim, Ki-Heung 한국환경복원기술학회 2008 한국환경복원기술학회지 Vol.11 No.3

To assessment the disturbances of the Namgang caused by dam construction, upstream area was selected for the reference reach and downstream area was selected for the comparison reach. And these reaches were surveyed and analyzed according to the assessment criteria of the river disturbances.The artificial factors of river disturbances were classified as river improvement works, dam construction and aggregate dredging. The indexes were physical factors as like epifaunal (bottom), embeddedness, velocity/depth regime, sediment deposition, channel flow status, channel alteration, frequency of riffles, bank stability, vegetative protection, riparian zone etc.The assessment results showed 46% of the assessment criteria which was serious status in dam downstream area and 89.5% of it which was excellent status in dam upstream.Finally, the results showed that physical river environment in downstream area was disturbed by the discharge control and the interception of sediment discharge by dam, consequently this disturbance give rise to impact of ecosystem in river.

Structural Characteristics and Maintenance Mechanism of Ulmus pumila Community at the Dong River, Gangwon-do, South Korea

Choung, Heung-Lak,Kim, Chul-Hwan,Yang, Keum-Chul,Chun, Jae-In,Roh, Huan-Chuen The Ecological Society of Korea 2003 Journal of Ecology and Environment Vol.26 No.5

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.

하천정비에 의한 하천의 물리적 교란 평가 -남강과 영천강을 대상으로-

김기흥 ( Ki Heung Kim ) 한국환경복원기술학회 2009 한국환경복원기술학회지 Vol.12 No.3

외래생물 미국가재 (Procambarus clarkii)의 국내 자연생태계 정착 보고

김수환,백혜준,양근복 한국하천호수학회 2019 생태와 환경 Vol.52 No.4

The Red swamp crawfish Procambarus clarkii is native to the southern United States and inhibits all over the world including the United States, Asia, Africa and Europe. In Europe, it is known to disrupt ecosystems such as competition with native crayfish. In this study, habitats of red swamp crawfish were identified in Jiseok stream (15.5 km section) and Daecho stream (6.1 km section) of Youngsan river. A total 33 red swamp crawfish were captured. A female captured in Jiseok stream carried 215 newly hatched red swamp crawfish in her the burrow. As a result of the analysis of the habitat environment, the water temperature was ranged of 2.4~32.8°C, conductivity was 53.4~502.3 μS cm-1 and DO was 0.74~22.64 mg L-1. As a result of measuring HOBO, the temperature ranged from - 9~48.1°C, showing a change of 57.1°C throughout the year. The variation of the water temperature throughout the year from 2.9~33.9°C was found to be 31°C. Red swamp crawfish have a high adaptability and a wide range of environmental resistance, and report a sharp increase in newly invaded areas, negatively affecting indigenous organisms. In addition, it can be used as a medium for the spread of diseases and parasites, so prompt investigation and research should be carried out.

‘壬申의 난’과 日本 -동아시아세계의 재편과 관련하여-

송완범 고려대학교 역사연구소 2014 사총 Vol.83 No.-

The large scale battles reached Kinki and Dokai regions in terms of war scope concerned with the past Jinshin Disturbance, and the influence ranged from Tohoku to Kyushu regions. The war scope that affected extensive regions actually reached almost all regions of Wa (Japan), and also the war was accompanied by a sudden change of the throne. The war-ridden disturbance has been mainly addressed in the Japan’s domestic problem domain. In 663, almost 10 years before Jinshin Disturbance, there was Battle on the Baekchon River, in which all the members of the East Asian World were involved. In this international battle, China’s Tang, and Korean Peninsula’s Goguryeo, Baekje, Shilla and Japan’s Wa that composed the East Asian World those days were involved. Another war that occurred in the period within 10 years of the international battle break-out was enough to make Wa turbulent. The Battle on the Baekchon River and Jinshin Disturbance are considered to be properly examined in view of the international situation at the end of the 7th century, when the swirl of rapid change of the international situation shaking East Asia occurred, and by seeing the Battle on the Baekchon River and Jinshin Disturbance in an extension of diverse and complicated international situations. Compared to the previous East Asian World, which was comprised of China (Sui, Tang), Three Kingdoms in the Korean Peninsula (Goguryeo, Baekje, Shilla) and Wa (Japanese Archipelago), East Asia after the Jinshin Disturbance was reorganized as Tang, Shilla and Wa. Namely, the significance of Jinshin Disturbance can be found from the fact that the prototype of the present East Asian World was sought in the latter part of the 7th century. 종래의 ‘임신의 난’에 대한 전란의 범위는 대규모의 전투가 긴키(近畿)와 동해(東海)지방에 까지 이르렀으며, 그 영향은 동국(東國)에서 규슈(九州)까지 미쳤다고 할 수 있다. 이렇게 광범위한 지역에 미친 전란의 범위는 당시의 왜의 거의 전역을 아우르는 것이었다고 해도 과언이 아니며, 아울러 갑작스런 왕위의 변동을 동반하는 것이기도 했다. 그러다 보니 이 전란은 주로 왜의 국내문제의 영역에서 다루어져왔다. 그런데 ‘임신의 난’의 거의 10년 전인 663년에는 동아시아세계의 구성원들이 모두 엉겨 붙었던 ‘백촌강 싸움’이라는 국제 전쟁이 있다. 이 국제 전쟁은 당시의 동아시아세계를 구성한 당, 고구려, 백제, 신라, 왜가 관련되어 벌인 전쟁이었다. 이 국제 전쟁의 발생으로부터 불과 10년이 경과되지 않은 시기에 벌어진 또 하나의 전란은 왜를 격동시키기에 충분했다. 동아시아세계를 뒤흔드는 국제 정세의 급격한 변화의 소용돌이가 쳤던 7세기 말의 국제 정세를 감안하고, 그 위에서 ‘백촌강 싸움’과 ‘임신의 난’을 다양하고 복잡한 국제 정세의 연장선상에서 보아야 제대로 규명할 수 있다고 생각한다. 이전의 동아시아세계가 중국(수와 당), 한반도 3국(고구려, 백제, 신라), 일본열도의 왜였던 것에 비하여, 이후의 동아시아는 당・신라・일본으로 재편되게 된다. 요컨대, ‘임신의 난’의 현재적 의의는 지금의 동아시아세계의 원형을 7세기 후반기에 구하게 한 데서도 찾을 수 있다고 할 수 있다.

임신(壬申)의 난과 일본(日本) -동아시아세계의 재편과 관련하여-

송완범 ( Whan Bhum Song ) 고려대학교 역사연구소 2014 사총 Vol.83 No.-

The large scale battles reached Kinki and Dokai regions in terms of war scope concerned with the past Jinshin Disturbance, and the influence ranged from Tohoku to Kyushu regions. The war scope that affected extensive regions actually reached almost all regions of Wa (Japan), and also the war was accompanied by a sudden change of the throne. The war-ridden disturbance has been mainly addressed in the Japan’s domestic problem domain. In 663, almost 10 years before Jinshin Disturbance, there was Battle on the Baekchon River, in which all the members of the East Asian World were involved. In this international battle, China’s Tang, and Korean Peninsula’s Goguryeo, Baekje, Shilla and Japan’s Wa that composed the East Asian World those days were involved. Another war that occurred in the period within 10 years of the international battle break-out was enough to make Wa turbulent. The Battle on the Baekchon River and Jinshin Disturbance are considered to be properly examined in view of the international situation at the end of the 7th century, when the swirl of rapid change of the international situation shaking East Asia occurred, and by seeing the Battle on the Baekchon River and Jinshin Disturbance in an extension of diverse and complicated international situations. Compared to the previous East Asian World, which was comprised of China (Sui, Tang), Three Kingdoms in the Korean Peninsula (Goguryeo, Baekje, Shilla) and Wa (Japanese Archipelago), East Asia after the Jinshin Disturbance was reorganized as Tang, Shilla and Wa. Namely, the significance of Jinshin Disturbance can be found from the fact that the prototype of the present East Asian World was sought in the latter part of the 7th century.

영산강하류지역의 생태계교란식물 분포와 관리방안

김하송,조영준,곽수란 한국도서(섬)학회 2019 韓國島嶼硏究 Vol.31 No.1

The survey was conducted 30 times from June to December, 2018 to investigate the ecosystem disturbed plants distribution according to 8 subdivisions of the Youngsan River(Naju Seungchonbo) in Jeollanam-do up to the lower part of Youngsan River Estuary. The management plan for the major ecosystem disturbed plants in the Yeongsan River area was prepared. As a result, it was found Paspalum distichum var. indutum was the largest to be affected at 34,269㎡, and Solidago altissima L. was highly impacted at 9,119㎡, and 8,567㎡ was recorded for Lactuca scariola L., while the Sicyos angulatus L. and Ambrosia artemisiifolia L. at the upper and middle parts of Youngsan River had relatively low visible peaks and are expected to diffuse upstream and downstream and to gradually expand downstream. Distribution of ecosystem disturbed plants and distribution of major habitats identified in the downstream section of the Yeongsan River were divided into water purification sites, riverside sites, highland sites, and levees, and their distributions were respectively analyzed. As a result, Solidago altissima L. accounted for 55.9%. The distribution area ratio was higher in the order of Solidago altissima L., Lactuca scariola L., Ambrosia artemisiifolia L., and Aster pilosus willd. The main distribution habitat of Sicyos angulatus L. is on the watery side, the terraced land along the river, and on the banks; and Lactuca scariola L., Solanum carolinense L., Hypochaeris radicata L. are situated on the embankments. Ambrosia artemisiifolia L., Aster pilosus Willd., and Solidago altissima L. were found on the terraced land along the river respectively. The Ministry of Environment (National Institute of Ecology) conducts necessary research on the actual condition and management of various forms oflife in accordance with the 5 - year National Biological Control Plan for Biological Diversity according to Article 21 of the Biodiversity Conservation and Use Act. Since 2015, it has been planning and conducting surveys on the status of exotic life forms and establishing a systematic outpatient biological management system by periodically identifying the status of exotic life forms. In addition, the Ministry of Environment produces and manages the ecosystem disturbed plants site management manual (2017). Based on the results, the management methods of Sicyos angulatus L., Ambrosia artemisiifolia L., Solanum carolinense L., Aster pilosus willd, Solidago altissima L. and Paspalum distichum var. indutum which can be applied in the downstream area of the Youngsan River were compared. Major ecosystem disturbances are physical, chemical and biological depending on the plant. It is considered that the removal effect such as changes in habitat can be improved by appropriately applying the removal method. If the distribution area is small, biological methods to induce natural ecosystem restoration by cultivating and transplanting suitable native species for habitat will be effective, but it is necessary to carry out a pilot project suitable for preliminary stability verification and field application. Therefore, comprehensive and long-term countermeasures will need to be established in accordance with the long-term ecosystem restoration plan related to the removal of plant life affected by disturbances to the ecosystem. 본 조사는 전라남도 영산강 하류(나주 승천보)에서 영산강하구둑까지 영산강하류지점 8구간을 구분하여 생태계교란식물 분포실태 조사를 2018년 6월부터 12월까지 총 30회에 걸쳐 실시하고 영산강 지역에 분포하는 주요 생태계교란식물에 대한 관리방안을 마련하였다. 그 결과, 털물참새피가 34,269㎡로 가장 넓게 분포하였고, 양미역취 9,119㎡, 가시상추 8,567㎡로 높게 나타났으며, 과거 영산강 상류와 중류에서 넓게 나타난 가시박과 돼지풀은 상대적으로 낮게 나타났으나 가시박은 상류와 중류에서 확산되어 하류로 점점 확대될 것으로 예상된다. 영산강 하류에서 확인된 생태계 교란식물의 분포와 주요 서식지별 분포 현황을 정수역, 수변부, 고수부지, 제방 등으로 세분하여 각각 그 분포 특성을 비교한 결과 전체분포 면적 중 털물참새피가 전체 55.9%로 가장 높게 나타났으며, 양미역취, 가시상추, 돼지풀, 미국쑥부쟁이 순으로 분포 면적 비율이 높게 나타났다. 가시박의 주요 분포 서식지는 수변부, 고수부지, 제방 등이며, 가시상추, 도깨비가지, 서양금혼초 등은 제방, 돼지풀, 미국쑥부쟁이, 양미역취 등은 고수부지, 털물참새피는 정수역과 수변부에서 주로 나타났다. 환경부(국립생태원)에서는 생물다양성보전 및 이용에 관한 법률 제21조에 따른 5년 단위 국가 외래생물 관리 계획에 의거 외래생물 피해 실태 및 관리에 필요한 조사연구를 수행하고 있으며, 2015년부터 외래생물 전국 서식실태 조사를 기획하여 수행하고, 외래생물의 서식현황을 주기적으로 파악하여 체계적인 외래생물 관리체계를 구축하고 있다. 또한, 환경부에서 생태계교란식물 현장관리 매뉴얼(2017년)을 제작하여 관리하고 있으며 이를 바탕으로 본 조사지역인 영산강 하류지역에 현장적용 할 수 있는 생태계교란식물인 가시박, 돼지풀, 도깨비가지, 미국쑥부쟁이, 양미역취, 털물참새피 등의 관리방안을 각각 비교하여 제시하였다. 주요 생태계 교란식물에 따라 물리적, 화학적, 생물학적. 서식지 환경변화 등의 제거방법을 적절히 적용하면 제거효과를 높일 수 있을 것으로 판단되며, 분포 면적이 소규모일 경우, 서식지에 적합한 자생종을 재배, 이식하여 자연생태계 복원을 유도하는 생물학적 방법도 효과가 있을 것으로 생각되지만, 사전 안정성 검증과 현장적용에 적합한 시범사업을 실시하여 충분한 검증이 필요한 실정이다. 따라서 생태계 교란식물 제거와 관련 장기적인 생태계복원계획 수립에 따라 종합적이고 장기적인 대책수립이 필요할 것으로 판단된다.

한강하구에서 월동하는 재두루미 개체군의 취식지 이용

이화수 ( Hwa Su Lee ),김정수 ( Jung Soo Kim ),구태희 ( Tae Hoe Koo ) 한국환경생물학회 2009 환경생물 : 환경생물학회지 Vol.27 No.4

본 연구는 경기도 고양시와 김포시 인근의 한강하구지역에 도래하여 월동하는 재두루미의 도래 및 취식지역 이용현황, 잠재식이물, 주간 일주행동 그리고 방해요인에 대한 조사를 통하여 이 지역 재두루미의 월동생태에 대한 기초자료 구축과 지속적인 서식을 위한 보전방안을 마련하기 위하여 실시하였다. 재두루미는 본 지역에서 2월 중순에 최대개체수인 162개체가 확인되었고, 3월 중순에 모두 번식지역으로 이동하였다. 월동기간 동안 한강주변 김포시와 고양시의 농경지역인 홍도평, 이화동, 평동 그리고 송포동지역을 취식지역으로 이용하였으며, 월동지 전체의 이용가능일수(ECC)는 334일(121~909일)이었다. 재두루미는 오전에 취식지역으로 이동하여 먹이 활동을 하였으며, 방해요인이 발생하면 한강의 갯벌로 이동하여 먹이 활동을 하거나 휴식을 취했다. 일주행동은 취식, 경계, 이동, 깃다듬기, 안락, 사회 및 기타행동으로 나누어 조사 하였으며, 월동지에서는 취식의 비율이 가장 높았다. 또한 일주행동 중 취식, 경계, 이동 그리고 깃다듬기는 취식지역별로 유의적인 차이가 나타났다. 통계적으로 유의한 차이를 나타내었다. 취식지역에서 재두루미의 월동에 방해를 주는 요인은 총 348회가 관찰되었으며, 차량, 사람, 자전거 및 오토바이와 같은 인위적인 방해요인과 소음, 동물, 기타의 자연적인 요인이 있었다. 방해요인은 이화동 (134회), 홍도평 (109회), 송포동 (64회) 그리고 평동(44회)의 순으로 관찰되었으며, 인위적인 방해요인(228회)이 자연적인 방해요인(120회)에 비해 많았다. 특히, 그 중에서 차량에 의한 방해의 빈도가 가장 높았다. The aims of this study were wintering individuals, usage of foraging sites, potential food availability, daily activity and disturbance factors of White-naped Cranes Grus vipio on the wintering site, Han-river estuary, Goyang and Gimpo city, Korea. We want to provide basic data to conserve the cranes. Maxium population was identified 162 individuals at the middle of February in the river side and mud flat of this study area. Spring migration for breeding was started at the first week of March and finished for two weeks later. White-naped Cranes were used four feeding sites in winter; agricultural area in Hongdopyong, Yihwa-dong, Pyong-dong and Songpo-dong. Expected carrying capacity (ECC) was 334 days (121~909 days). White-naped Cranes departed from roosting site to feeding site at every morning for foraging. If they were disturbed by some factors at feeding sites, they moved to mud flat in the Han River to forage and take a rest. Daily activity was consisted of six category; feeding, alert, locomotion, preening, comfort, social and other behaviors. Feeding was the highest portion among behaviors in the wintering area. Feeding, alert, locomotion and preening in daily activities significantly differed among feeding sites. We watched total 348 times of disturbances in the wintering sites. Artificial disturbances were vehicles, humans, bicycles and motorcycles. Natural disturbances were noises, animals and others. Disturbances in all wintering sites were highest in Yihwa-dong (134 times) and followed by Hongdopyong (109 times), Songpo-dong (64 times) and then Pyong-dong (44 times). And artificial disturbances (228 times) were more than natural disturbances (120 times). Especially, vehicle was one of the most checked factor in the wintering area.

정량화에 의한 물리적 하천교란 평가기법의 개선과 적용

최흥식,심규랑,이웅희 한국습지학회 2015 한국습지학회지 Vol.17 No.3

본 연구에서는 기존의 물리적 하천교란 평가방법을 개선하고 적용성을 분석하였다. 개선한 교란평가 기법은 정성적 항목을 정량적인 항목으로 제시하고 이의 근거와 평가 산정식을 제시하였고, 이에 상응하는 평가영역 내 점수를 보다 세분화 하고 수리특성과 지형 변화를 수치모의에 의한 결과를 이용할 수 있도록 개선하였다. 개선된 교란평가방법은 적용성을 확인하기 위해 비정비하천, 도시관류하천, 산지계류하천의 특성을 가지는 6개의 하천에 적용하여 기존의 평가방법과 개선된 평가방법의 결과를 비교 분석하였다. 하상서식환경과 하상재료를 제외한 8가지 평가항목은 HEC-RAS 수치모의 결과를 직접 입력하여 간편하게 수행할 수 있었다. 또한 정량적 평가방법의 적용 결과 기존의 평가방법보다민감한 평가 결과를 나타냈으나, 전반적으로 기존의 평가방법과 비슷한 결과를 나타내어 적용성이 있음을 확인하였다. This study has improved the existed physical disturbance evaluation assessment technique in a river and analysed its applicability. The improvements are the quantitative evaluation items instead of qualitative one by providing the background and their evaluation equations, corresponding detailed itemization of evaluation score, and the direct input of hydraulic characteristics and geometrical changes by numerical simulation. In order to confirm the applicability of improved disturbance evaluation technique, the comparison and analysis between the evaluation results of existed and improved techniques have been carried out by applying to the 6 cases of natural, urban, and mountainous streams. Direct input of numerical simulation results of HEC-RAS enables the evaluation simple for 8 evaluation items excluding the items of habitat environment and bottom substrate. The improved disturbance evaluation technique, which evaluates the degree of disturbance sensitively by the quantitative and detailed itemized evaluations, has been confirmed the appropriate applicability by applying to river systems.