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목차
Ⅰ. 팔당호·의암호 조류 조사 5
Ⅱ. 팔당호·의암호 조류 현황 9
1. 2020년 조류경보제 결과 9
가. 기상변화와 수리학적 특성 9
나. 수질변화 12
다. 조류발생 현황 15
라. 계절별 기상변화와 수리학적 특성 21
마. 계절별 수질변화 22
바. 계절별 조류발생 현황 24
Ⅲ. 팔당호·의암호 장기 조류 현황 27
1. 팔당호의 장기 조류경보제 결과('11~'20) 27
가. 기상변화와 수리학적 특성 27
나. 수질변화 28
다. 조류발생 현황 30
라. 계절별 조류발생 경향 35
2. 한강(이천)·의암호의 장기 조류경보제 결과('16~'20) 38
가. 기상변화와 수리학적 특성 38
나. 수질변화 40
다. 조류발생 현황 42
라. 계절별 조류발생 경향 45
3. 조류경보 발령('11~'20) 47
Ⅳ. 관찰지점 조류 현황 48
1. 2020년 관찰지점 운영결과 48
Ⅴ. 부록 52
【부록 1】 팔당호 조류경보제 시행 목적 및 법적 근거 52
【부록 2】 팔당호 조류경보제 추진 경위 및 체계 53
【부록 3】 팔당호 조류경보제 발령 기준 및 대응 요령 55
【부록 4】 '20년 조류경보제 수질 및 식물플랑크톤 조사 결과 58
판권기 67
Table Ⅰ-1-1. Monitoring sites of algae alert system in Lake Paldang 6
Table Ⅰ-1-2. Characteristics of harmful cyanobacteria in Korea 8
Table Ⅱ-1-1. Climate and hydraulic characteristics in Lake Paldang, 2020 9
Table Ⅱ-1-2. Climate and hydraulic characteristics in Gangcheon Weir, 2020 10
Table Ⅱ-1-3. Climate and hydraulic characteristics in Lake Uiam, 2020 11
Table Ⅱ-1-4. Monthly variation of physico-chemical factors in 2020 13
Table Ⅱ-1-5. Monthly variation of cell density of phytoplankton taxa in 2020 15
Table Ⅱ-1-6. Monthly variation of relative abundance of phytoplankton taxa and dominant species in 2020 18
Table Ⅱ-1-7. Seasonal variation of climate and hydraulic characteristics in Lake Paldang, 2020 21
Table Ⅱ-1-8. Seasonal variation of physico-chemical factors in 2020 22
Table Ⅱ-1-9. Seasonal variation of cell density of phytoplankton taxa in 2020 24
Table Ⅱ-1-10. Seasonal variation of relative abundance of phytoplankton taxa and dominant species in 2020 25
Table Ⅲ-1-1. Annual variation of climate and hydraulic characteristics in Lake Paldang 27
Table Ⅲ-1-2. Annual variation of physico-chemical factors in Lake Paldang 29
Table Ⅲ-1-3. Annual variation of cell density of phytoplankton taxa in Lake Paldang 29
Table Ⅲ-1-4. Annual variation of relative abundance of phytoplankton taxa and... 31
Table Ⅲ-1-5. Seasonal variation of cell density of phytoplankton taxa in P2 35
Table Ⅲ-1-6. Seasonal variation of cell density of phytoplankton taxa in P3 36
Table Ⅲ-1-7. Seasonal variation of cell density of phytoplankton taxa in SB 37
Table Ⅲ-2-1. Annual variation of climate and hydraulic characteristics in Gangcheon weir and... 38
Table Ⅲ-2-2. Annual variation of physico-chemical factors in IC and SYG 40
Table Ⅲ-2-3. Annual variation of cell density of phytoplankton taxa in IC and SYG 42
Table Ⅲ-2-4. Annual variation of relative abundance of phytoplankton taxa and dominant... 44
Table Ⅲ-2-5. Seasonal variation of cell density of phytoplankton taxa in IC 45
Table Ⅲ-2-6. Seasonal variation of cell density of phytoplankton taxa in SYG 46
Table Ⅲ-3-1. Algae alert issuing period between 2011 and 2020 47
Table Ⅳ-1-1. Monthly variation of cell density of phytoplankton taxa in three weirs, 2020 48
Table Ⅳ-1-2. Monthly variation of relative abundance of phytoplankton taxa and dominant... 50
Fig. Ⅱ-1-1. Variation of precipitation, water temperature and outflow in Lake Paldang, 2020 9
Fig. Ⅱ-1-2. Variation of precipitation, water temperature and outflow in Gangcheon weir, 2020 10
Fig. Ⅱ-1-3. Variation of precipitation, water temperature and outflow in Lake Uiam, 2020 11
Fig. Ⅱ-1-4. Monthly variation of physico-chemical factors in 2020 14
Fig. Ⅱ-1-5. Weekly variation of cell density of phytoplankton taxa and harmful cyanobacteria in 2020 16
Fig. Ⅱ-1-6. Monthly variation of relative abundance of phytoplankton taxa in 2020 20
Fig. Ⅱ-1-7. Seasonal variation of physico-chemical factors in 2020 23
Fig. Ⅱ-1-8. Seasonal variation of relative abundance of phytoplankton taxa in 2020 26
Fig. Ⅲ-1-1. Monthly variation of precipitation, water temperature and outflow in Lake Paldang 27
Fig. Ⅲ-1-2. Annual variation of precipitation, outflow and residence time in Lake Paldang 28
Fig. Ⅲ-1-3. Annual variation of physico-chemical factors in Lake Paldang 29
Fig. Ⅲ-1-4. Monthly variation of cell density of phytoplankton taxa and... 31
Fig. Ⅲ-1-5. Annual variation of relative abundance of phytoplankton taxa in Lake Paldang 34
Fig. Ⅲ-2-1. Monthly variation of precipitation, water temperature and outflow in Gancheon weir and Lake Uiam 38
Fig. Ⅲ-2-2. Monthly variation of precipitation, water temperature and outflow in Lake Uiam 39
Fig. Ⅲ-2-3. Annual variation of precipitation, outflow and residence time in Gangcheon weir 39
Fig. Ⅲ-2-4. Annual variation of precipitation, outflow and residence time in Lake Uia 39
Fig. Ⅲ-2-5. Annual variation of physico-chemical factors in IC and SYG 41
Fig. Ⅲ-2-6. Monthly variation of cell density of phytoplankton taxa with... 43
Fig. Ⅲ-2-7. Annual variation of relative abundance of phytoplankton taxa in IC and SYG 44
Fig. Ⅳ-1-1. Weekly variation of cell density of phytoplankton taxa and... 49
Fig. Ⅳ-1-2. Monthly variation of relative abundance of phytoplankton taxa in three weirs, 2020 51