• 한국기후변화학회지
• /
• 제8권2호
• /
• pp.125-143
• /
• 2017

This study is conducted to estimate potential evapotranspiration of 10 weather observing systems in Andong Dam watershed with FAO56 Penman-Monteith (FAO56 PM) methodology using the meteorological data from 2013 to 2014. Also, assuming that there is no solar radiation data, humidity data or wind speed data, the potential evapotranspiration was estimated by FAO56 PM and the results were evaluated to discuss whether the methodology is applicable when meteorological dataset is not available. Then, the potential evapotranspiration was estimated with Hargreaves method and compared with the potential evapotranspiration estimated by FAO56 PM only with the temperature dataset. As to compare the potential evapotranspiration estimated from the complete meteorological dataset and that estimated from limited dataset, statistical analysis was performed using the Root Mean Square Error (RMSE), the Mean Bias Error (MBE), the Mean Absolute Error (MAE) and the coefficient of determination ($R^2$). Also the Inverse Distance Weighted (IDW) method was performed to conduct spatial analysis. From the result, even when the meteorological data is limited, FAO56 PM showed relatively high accuracy in calculating potential evapotranspiration by estimating the meteorological data.

• 한국환경과학회지
• /
• 제32권5호
• /
• pp.329-341
• /
• 2023

We surveyed the vegetation of an ecological landscape preservation area (legally protected conservation areas or national parks) and the surrounding areas of Mt. Cheonggye, Republic of Korea, to explore the conservation implications for preservation areas and surrounding transition areas. We calculated diversity indices to identify the properties of the preservation and surrounding areas that are relevant to conservation efforts. We then compared the plant community composition between the areas using field and quadrat surveys in the preservation and surrounding areas. The cover of the dominant species in all tree and herb layers was markedly higher in the preservation area than in the peripheral zones. The species richness indices were significantly higher in the preservation area than in the peripheral zones. Ordination using detrended canonical correspondence analyses showed that the cover of the dominant tree species and rocks could explain the distribution of plant species in the Cartesian space of the ordination. Our results demonstrate that physiognomically designated protected areas match well with ecological data based on diversity indices and ordination analyses and that disturbances in the areas surrounding the ecological landscape of preservation areas can have considerable impacts on plant diversity indices. Hence, the preservation and management of surrounding areas are essential conservation elements for protecting the entire ecological landscape of preservation areas.

• 환경영향평가
• /
• 제9권4호
• /
• pp.349-362
• /
• 2000

In the study, the feasibility of landscape ecological measures as indices system for interpretation and evaluation of regional ecosystem was investigated through the application to Yongin City. Each patch metrics well showed the class structure and supplemented the class metrics, and class metrics also showed well the landscape structure and supplemented the landscape metrics. And the change analysis through subtraction of two set of landscape ecological measurement in two point of time showed the dynamic trends very well. One of the dynamic trends in Yongin City was the rapid fragmentation. While there was no landcover data on Yongin City, using Landsat data and remote sensing techniques were proved to be efficient and effective to produce the digital landcover data.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2007년도 Proceedings of ISRS 2007
• /
• pp.533-536
• /
• 2007

The LiDAR data structure has the potential for modeling in three dimensions because the LiDAR data can represent voxels with z value under certain defined conditions. Therefore, it is possible to classify the physical damaged degree of vegetation by forest fire as using the LiDAR data because the physical loss of canopy height and width by forest fire can be relative to an amount of points reached to the ground through the canopy of damaged forest. On the other hand, biological damage of vegetation by forest fire can be explained using the NDVI (Normalized Difference Vegetation Index) which show vegetation vitality. In this study, we graded the damaged degree of vegetation by forest fire in Yangyang-Gun of South Korea using the LiDAR data for physical grading and digital aerial photograph including Red, Green, Blue and Near Infra-Red bands for biological grading. The LiDAR data was classified into 2 classes, of which one was Serious Physical Damaged (SPD) and the other was Light Physical Damaged (LPD) area. The NDVI was also classified into 2 classes which are Serious Biological Damaged (SBD) and Light Biological Damaged (LBD) area respectively. With each 2 classes ofthe LiDAR data and NDVI, the damaged area by forest fire was graded into 4 degrees like damaged class 1,2,3 and 4 grade. As a result of this study, 1 graded area was the broadest and next was the 3 grade. With this result, we could know that the burned area by forest fire in Yangyang-Gun was damaged rather biologically because the NDVI in 1 and 3 grade appeared low value whereas the LiDAR data in 1 and 3 grade included light physical damage like the LPD.

• 한국조경학회지
• /
• 제49권1호
• /
• pp.31-41
• /
• 2021

본 연구는 최근 개발압력이 증가하여 생태자산 관리에 대한 많은 과제가 있는 경기도 파주시를 대상으로, 국립생태원에서 실시한 지역 주민 인식평가 조사 데이터를 활용하여, 지역 생태자산에 대한 거주민의 인식을 분석하였다. 연구에서는 가치관의 차이를 밝히는데 유용한 Q방법론을 적용하여 생태자산에 대한 주민들의 평가 성향을 구분하였으며, 성향에 따른 그룹별로 생태자산 훼손 취약성에 대한 인식 차이를 비교 분석하였다. 분석 결과, 파주시 주민 중에는 생태적으로 중요한 기능을 하는 습지나 기수역, 산림 등 자연자산을 우선 보전하고자 하는 '자연보전 그룹'과 왕릉 및 묘역 등 문화유산과 연계된 생태자산을 우선 보전하고자 하는 '유산보전 그룹' 등 크게 두 성향이 구분되었다. 두 설명그룹은 각 생태자산의 보전 인식, 활용 인식에 대해서는 차이가 있었지만, 훼손도 평가에서는 비슷한 성향으로 답했으며, 특히 25개의 생태자산 중 2개 자산을 제외하고 모두 개발압력을 받고 있다고 인식했다. 또한, 전반적으로 '자연보전 그룹'이 '유산보전 그룹'보다 생태자산의 훼손에 대해 적극적으로 인식하고 있었다. 생태자산 중에서는 산남습지, 특히 공릉천, 공릉천 기수지역, 심학산의 관리에 대해서 '자연보전 그룹'이 훼손 가능성에 대해서 문제로 인식하고 있었다. 본 연구는 각 생태자산에 대한 거주민들의 가치관의 차이를 보다 객관적으로 평가했으며, 연구의 결과는 파주시 생태자산 관리에 관한 의사결정에 유용한 자료로 활용할 수 있으리라 기대된다.

• 한국환경복원기술학회지
• /
• 제26권4호
• /
• pp.35-50
• /
• 2023

As urbanization progresses, there is a growing and continuous demand for green spaces that provide ecosystem services. However, increasing the quantity of green spaces within major cities is challenging. Therefore, it is essential to pursue qualitative improvements that consider ecological characteristics of existing green spaces. In this study, we focus on local neighborhood parks in Seoul and present the following two questions through an evaluation utilizing ecological design indicators and land use data: 1. Which factor, design or location, has a greater influence on the ecological quality of neighborhood parks in Seoul? 2. Additionally, when evaluating ecological characteristics, is there similarity between assessments based on land-use data and those utilizing ecological design indicators? For this study, we conducted research on 30 neighborhood parks in Seoul and classified them into mountainous types (adjacent to mountains, natural terrain parks) and urban types (independently designed within 300m without existing forests) based on previous studies. Firstly, we conducted evaluations according to park location types. When comparing the evaluation scores of urban types (14 parks) and mountainous types (16 parks), significant differences were observed with scores of 16.86 and 35.94, respectively. Statistical analysis showed a significant difference between park types. In terms of habitat quality, the average values for urban and mountainous parks were 0.33 and 0.53, respectively, and statistically significant differences were observed between park types indicating differences in ecological potential according to park location. Secondly, when comparing the results of ecological potential evaluations based on park design and external connectivity, a correlation was found between habitat quality and total scores according to evaluation indicators. The correlation analysis showed significant linear relationships between habitat quality and total scores, biodiversity scores, and ecosystem function scores, with high positive correlation coefficients of 0.829, 0.861, and 0.802, respectively. This study holds significance in analyzing the ecological aspects of urban parks through the lens of both park location characteristics and design indicators. The analysis results underscore the importance of planning and managing ecologically sound urban parks contingent upon their location. Moreover, the utilization of appropriate ecological design indicators can help alleviate environmental limitations surrounding parks. Integrating these considerations could enhance the ecological quality and ecosystem services of urban green spaces.

• 한국지리정보학회지
• /
• 제26권4호
• /
• pp.80-96
• /
• 2023

인간의 활동 영역과 도로의 확장으로 인한 생태공간의 손실과 단절은 생물다양성에 부정적 요소이다. 특히 토지의 이용과 피복이 급속하게 변한 도시의 시가화지역은 생태공간의 손실과 고립으로 야생생물의 서식이 어려운 지역이다. 또한 도시화에 따른 생태공간 손실과 단절은 생태계서비스에 부정적 영향을 미칠 수 있다. 그러므로 도시와 국토의 생물다양성 및 생태계서비스 증진을 위해 도시의 현황을 반영한 실용적 생태축 구축이 필요하다. 따라서 본 연구는 대구·경북권역 기초자치단체의 도시생태축 관련 공간계획 수립에 활용할 수 있는 생태공간의 연결성과 산림축을 분석하여 제시하였다. 생태공간 연결성은 대구·경북권역 31개 기초자치단체의 산림과 자연지역으로 구분하여 토지피복도를 활용하여 분석하였다. 그리고 대상지를 20,483개의 1km² 육각형 격자로 나누고 생태공간의 100m 이내 단절에 대한 복원 효과를 공간 군집화하여 복원 중점지역을 시각화하였다. 산림축은 100ha 이상 산림 1,534개를 연결하는 선형을 토지피복, 건축물 면적, 경사 등 지역 현황을 반영하여 도출하였다. 연구 결과는 생태공간의 연결성 개선을 위한 공간계획 및 목표 수립과 복원지역 선정의 기초자료로 활용할 수 있을 것으로 기대된다.

• 대한원격탐사학회지
• /
• 제31권2호
• /
• pp.127-136
• /
• 2015

본 연구는 항공 LiDAR 자료를 이용하여 열대원시림인 브루나이 지역의 지상부 생체량을 정량화하기 위하여 수행되었다. 25ha 크기의 연구대상지에 0.09ha ($30m{\times}30m$) 크기의 24개의 표본구 내에서 조사된 각 표본점 내 개체목의 흉고직경 및 위치자료를 활용하였다. 또한, 항공 LiDAR 자료를 이용하여 수치표면모델(Digital Surface Model), 수치지형모델(Digital Terrain Model), 수고모델(Canopy Height Model)을 구축하였다. 수고모델을 표본구단위로 분할하고 총 12개의 LiDAR 높이변수를 구축하였다. 표본구별로 상대생장식을 이용하여 계산된 생체량과 LiDAR 자료로부터 추출된 변수간의 다중회귀분석을 통해 LiDAR 자료로부터 생체량을 추정할 수 있는 식을 도출하였다. 표본구의 생체량은 평균 366.48 Mg/ha였으며, 155.81 Mg/ha부터 597.21 Mg/ha까지 분포하였다. LiDAR로부터 생체량을 추정하는 식의 검증 결과, 결정계수 값은 0.84로 나타났다.

• 한국도서관정보학회지
• /
• 제51권4호
• /
• pp.249-278
• /
• 2020

본 연구의 목적은 생태 분야에서 생산되는 연구데이터의 관리 및 공유를 위한 메타데이터를 설계하기 위함이다. 특히, 메타데이터는 웹에 게시된 데이터 카탈로그 사이의 상호운용성을 용이하게 하도록 설계된 DCAT을 기반으로 설계되었다. 또한, 생태분야의 특성을 반영하기 위하여 ABCD, Darwin Core 그리고 EML 등을 분석하여 메타데이터 설계에 적용하였다. 연구 결과, 생태 분야 연구데이터를 관리하기 위한 메타데이터 요소는 전체 51개가 도출되었으며 필수 요소는 6개, 권고 요소 23개 그리고 선택요소 22개가 포함되었다. 본 연구 결과는 메타데이터 요소를 기반으로 연구데이터 관리 및 공유시스템 구축 시 DB를 설계할 수 있으며, 타 시스템과 연계 시 메타데이터 교환 형식을 제시하는데 사용할 수 있을 것이다.

• Journal of Forest and Environmental Science
• /
• 제29권2호
• /
• pp.138-146
• /
• 2013

The typical natural landscapes and temporal- spatial regulation of Land use change and their ecological effects at Hailun County were conducted and analyzed, based on the translated data from remote sensing images in 1986, 1996 and 2000 using GIS and landscape ecological theory. The results indicated the area of arable land, paddy field and city land increased 7,786.39 $hm^2$, 3391.18 $hm^2$ and 120.84 $hm^2$ while the area of forestry, grassland and marsh decreased 3,184.88 $hm^2$, 1,625.8 $hm^2$ and 3,994.85 $hm^2$ respectively during 14 years. Dry land is a main landscape in this area. These changes made the environmental quality worse gradually, such as land degradation, soil erosion and water and soil losses, and temperature getting warmer. This study is very important for the local ecological environment protect and agricultural sustainability and land resources sustainable using.