Taizo Mikazuki · 2020. 7. 14. · Shiga Prefecture Agriculture is the Best Solution to Climate...
Transcript of Taizo Mikazuki · 2020. 7. 14. · Shiga Prefecture Agriculture is the Best Solution to Climate...
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Shiga Prefecture Agriculture is the Best Solution to Climate Change!
Taizo MikazukiGovernor of ShigaMay 13, 2019, Otsu City, Shiga, Japan 1
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ShigaJAPAN
Shiga in Japan
Shiga and Lake Biwa
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Shiga and Lake Biwa
●Surface area:670.25 km2
(1/6 the size of Shiga)● Length of shore:
235 km● Water volume:
~27.5 billion m3
● Average depth: ~41 m
● Maximum depth:103.58 m
● Minimum width: 1.35 km
Basic information about Lake Biwa
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The annual average temperature in Hikone, Shiga(1894-2018)
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12.5
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13.5
14
14.5
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15.5
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1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 2020
(℃)
(Year)
Annual Average
5year Moving Average
Long-term change
Impact of Climate Change in Shiga
Trend in the average temperature: +1.3℃ in 100 years
A further rise of about 2.9℃ by the end of the century is predicted. That is the same average temperature as present-day Miyazaki.
Shiga
Miyazaki 4
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Butterfly that lived further south
Cherry Blossoms at Lake Biwa Canal
Animal and Plant Life is Already Changing
Blue-green algae appeared later than usual, in late autumn (November 6, 2015)
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Thermal layer
Dissolved oxygen
Dissolved from the atmosphere
Phytoplankton Phytoplankton
Holomixis(complete mix)
Spring to autumn
Oxygen consumption Recovery of
oxygen
Thermal layer
Phytoplankton
Oxygen consumption
Photosynthesis
Dissolved oxygen
Average winter Dissolved from the
atmosphere
Warm winter Dissolved from the
atmosphere
Dissolved oxygen
Every winter, Lake Biwa turns into a holomictic lake that has a uniform temperature and density from top to bottom.However, this year, the lake stayed meromictic because of the warm winter.
Photosynthesis
Meromixis(Partial mix)
Meromixis(Partial mix)
Impacts on Lake Biwa
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Impacts of Climate Change on Agriculture in Shiga
Deterioration in the appearance of rice due to summer heat
white immature grains cracked rice grains
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Destruction of vinyl greenhouses by typhoon No. 21 (September 2018)
Impacts of Climate Change on Agriculture in Shiga
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Source:A-PLAT, NIES(Edited)
Countermeasures against Climate Change Shiga
JAPANAgriculture, Forestry and Fisheries
Water Environment and Water Resources Natural Ecosystem
Natural DisastersEconomy, Trade
and Industry
Health
Civil Life and Environment
The Shiga government is taking measures to mitigate climate change and adapt to it.Shiga established its Center for Climate Change Adaptation in January 2019. It was the second in Japan.
Decrease in quality and in yield
Water quality deterioration
Water shortage Changes in the habitat of plants and animals
Impacts on the distribution and production equipment
Impacts on infrastructures and on tourism
Landslides
Flooding
Heatstroke
Risk of dengue fever
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The new rice cultivar, Mizukagami, is tolerant to high temperatures10
Adapting agriculture to climate change in Shiga
Shiga’s environmentally-conscious agriculture area
is the largest in Japan.
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Hairy vetch
Lotus
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Shiga’s efforts in environmentally-
conscious agriculture are No.1 in Japan!
Environmentally-conscious agriculture in Shiga (planting cover crops)12
Mitigating Climate Change’s Effects on Agriculture
Shiga’s environmentally-conscious agriculture area
is the largest in Japan.
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溝切り作業
Environmentally-conscious agriculture in Shiga (extending the duration of the midsummer drainage on paddy fields) 13
Mitigating Climate Change’s Effects on Agriculture
Shiga’s environmentally-conscious agriculture area
is the largest in Japan.
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Adapting to climate change
Maintaining sustainable food
production
Reducing greenhouse gases
through “mitigations”
Environmentally-Conscious Agriculture in Shiga
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Techniques to reduce greenhouse gases in tea fields15
Mitigating Climate Change’s Effects on Agriculture
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The Lake Biwa System interweaves fisheries and agriculture, nurtured by the forests, villages, and the Lake
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Shiga Prefecture Agriculture is a Solution to Climate Change!
Developing environmentally-conscious agriculture and the Lake Biwa System and connecting them to the next generation
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ご清聴ありがとうございました。Thank you for your attention.