저서성 대형무척추동물을 이용한 RIVPACS 유형의 하천생태계 건강성 평가법 국내 하천 적용성
(주)코리아스칼라
- 최초 등록일
- 2023.06.05
- 최종 저작일
- 2023.03
- 12페이지/ 어도비 PDF
- 가격 4,300원
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서지정보
ㆍ발행기관 : 한국하천호수학회
ㆍ수록지정보 : 생태와 환경 / 56권 / 1호
ㆍ저자명 : 이다영, 이대성, 민중혁, 박영석
목차
Abstract
서 론
재료 및 방 법
1. 군집 자료
2. 환경 자료
3. 분석 방법
결 과
1. 생물 군집
2. 환경변수 선택
3. 군집 예측모델
고 찰
1. 모델 오차의 원인
2. 예측모델 결과의 편향성
3. 예측에 이용할 분류군 수의 결정
적 요
REFERENCES
영어 초록
In stream ecosystem assessment, RIVPACS, which makes a simple but clear evaluation based on macroinvertebrate community, is widely used. In this study, a preliminary study was conducted to develop a RIVPACS-type model suitable for Korean streams nationwide. Reference streams were classified into two types (upstream and downstream), and a prediction model for macroinvertebrates was developed based on each family. A model for upstream was divided into 7 (train): 3 (test), and that for downstream was made using a leave-one-out method. Variables for the models were selected by non-metric multidimensional scaling, and seven variables were chosen, including elevation, slope, annual average temperature, stream width, forest ratio in land use, riffle ratio in hydrological characteristics, and boulder ratio in substrate composition. Stream order classified 3,224 sites as upstream and downstream, and community compositions of sites were predicted. The prediction was conducted for 30 macroinvertebrate families. Expected (E) and observed fauna (O) were compared using an ASPT biotic index, which is computed by dividing the BMWPK score into the number of families in a community. EQR values (i.e. O/E) for ASPT were used to assess stream condition. Lastly, we compared EQR to BMI, an index that is commonly used in the assessment. In the results, the average observed ASPT was 4.82 (±2.04 SD) and the expected one was 6.30 (±0.79 SD), and the expected ASPT was higher than the observed one. In the comparison between EQR and BMI index, EQR generally showed a higher value than the BMI index.
참고 자료
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