19沼津工業高等専門学校研究報告
第 55 号，2021 年 1 月

㛛ụࡢỈ㉁ࡢኚ໬㸦㹼 ᖺࡢㄪᰝ㸧ⰾ㔝ᜤኈ *࣭➉ཱྀᫀஅ *Changes of Water Quality in Kado-ike Pond (Research of 2006-2020)
YOSHINO Kyoji *, TAKEGUCHI Masayuki *Abstract: We have monitored the changes in water quality in Kado-ike, an irrigation pond in
Numazu City, Shizuoka, from 2006 to 2020. Some parameters, which were air temperature,
water temperature, transparency, and electric conductivity for the physical characteristics, pH,chemical oxygen demand (COD), and nutrients as nitrogen and phosphorus for the chemical
characteristics, were measured to assess the environmental water quality. For past 15 years,
the water quality of the pond did not greatly change. Some conductive contaminants andinorganic nitrogen and phosphorous as nourishment salts flowed into the pond from at least 3
streams throughout the year and then eutrophication has been taking place. As for the surface
water of the pond in summer, water temperature rose up intensely and the COD values
increased, and the high pH values and low degrees of transparency were observed. It will benecessary to watch the changes of water quality of the pond continuously to prevent theaggravation of it.
Key Words:

Water quality, Eutrophication, Kado-ike䠍䠊䛿䛨䜑䛻㛛ụࡣࠊ἟ὠᕷ໭ᮾ㒊ࡢୣ㝠ᆅ࡟࠶ࡿࠊ࿘ᅖ⣙ 1.3 kmࠊ㠃✚⣙ 13.5 haࠊ῝ࡉ⣙ 5㹼6 m ࡢබᅬụ࡛࠶ࡿࠋỤᡞ᫬⤖ᯝ࡟ࡘ࠸࡚ࡣࡇࢀࡲ࡛࡟ሗ࿌ࡋ࡚࠸࡞࠸ࡶࡢࡶ࠶ࡿࠋᮏሗ࿌ࡣࠊ㐣ཤ 15 ᖺ㛫ࡢ㛛ụෆእࡢᐃⅬ࡟࠾ࡅࡿỈ㉁ࡢኚ
໬ࢆᢕᥱࡍࡿ㈨ᩱ࡜ࡋ࡚ࠊ2006 ᖺ࠿ࡽ 2020 ᖺࡲ࡛ࡢࡇࢀࡽᮍⓎ⾲ࡢࢹ࣮ࢱࢆࡲ࡜ࡵࡓࡶࡢ࡛࠶ࡿࠋ

௦࠿ࡽ㎰ᴗࡢࡓࡵࡢ℺₅⏝⁀ụ࡜ࡋ࡚ᩚഛࠊ฼⏝ࡉࢀ࡚ࡁࡓࡀࠊ㯤℩ᕝ➼ࡢ࿘ᅖࡢᕝࡸഃ⁁࠿ࡽὶࢀ㎸ࡴᰤ㣴ሷࡀ⁫␃ࡍࡿࡇ࡜࡛ࠊࡑࡢᐩᰤ㣴໬࡜Ỉ㉁ࡢᝏ໬ࡀၥ㢟࡜࡞ࡗ࡚䠎䠊ㄪᰝ᪉ἲ࠸ࡿࠋᆅᇦ⮬἞఍࡛ࡣࠊ2004 ᖺᗘ࠿ࡽࠕ㛛ụࡢỈࢆ⪃࠼᥇Ỉࡢሙᡤࡣࠊᅗ 1 ࡟♧ࡍࡼ࠺࡟㛛ụࡢ໭ഃ୰ኸࡢᆅⅬࡿ఍㸦⌧ 㛛ụࡢỈ࡜⎔ቃࢆ⪃࠼ࡿ఍㸧ࠖ࡜࠸࠺ຮᙉ఍ࢆẖAࠊྠ༡ഃᮾᐤࡾࡢᆅⅬ Bࠊ㛛ụࡢ໭ᮾ㒊࠿ࡽὶධࡍࡿᑠᖺᐇ᪋ࡋ࡚࠸ࡿࠋࡑࡇ࡛ᡃࠎࡣࠊᆅᇦࡢᑠ୰Ꮫ⏕ࡸఫẸ➼

ᕝࡢᆅⅬ Cࠊ㛛ụࡢᮾ㒊࠿ࡽὶධࡍࡿ㯤℩ᕝ࠿ࡽࡢỈ㊰ࡢࡀཧຍ࡛ࡁࡿබ㛤ㅮᗙࠕ㛛ụ⎔ቃㄪᰝ㝲㸟ࠖࢆ 2006 ᖺ࠿ᆅⅬ Dࠊࡉࡽ࡟ࡣᆅⅬ C ࡜ᆅⅬ D ࡢ୰㛫ࡢሙᡤ࠿ࡽὶධࡽ⌧ᅾࡲ࡛᩿⥆ⓗ࡟㛤ദࡍࡿࡇ࡜࡛ࠊ㛛ụࡢỈ㉁➼࡟ࡘ࠸ࡍࡿഃ⁁ࡢᆅⅬ E ࡢ 5 ࣧᡤ࡜ࡋࡓࠋᆅⅬ A ࡜ᆅⅬ B ࡣࡇ࡚ࣔࢽࢱࣜࣥࢢࢆ⾜ࡗ࡚ࡁࡓࠋࡲࡓࠊ2011 ᖺ࠿ࡽࡣᆅᇦࢀࡲ࡛ࡢㄪᰝᅇᩘࡀከ࠸ሙᡤ࡜ࡋ࡚ࠊࡲࡓࠊᆅⅬ C㹼E ࡣࡢᑠ୰Ꮫᰯࡢ༠ຊࢆᚓ࡚ࠊ⎔ቃ࡟㛵ࡍࡿฟ๓ᤵᴗࡶᐇ᪋ࡋ㛛ụ࡬ࡢὶධỈࢆ᥇ྲྀ࡛ࡁࡿᆅⅬ࡜ࡋ࡚ࠊࡇࢀࡲ࡛ࡢ」ᩘ

࡚࠸ࡿࠋ㛛ụࡢỈ㉁ㄪᰝ⤖ᯝ࡟ࡘ࠸࡚ࡣࠊࡇࢀࡲ࡛࡟ 2006

ࡢ᥇ỈᆅⅬ࠿ࡽ௒ᅇࡢሗ࿌ࡢࡓࡵ࡟㑅ᢤࡋࡓࠋ࡞࠾ࠊᆅⅬᖺ㹼2011 ᖺ࠾ࡼࡧ2015 ᖺࡢኟᏘࡢࢹ࣮ࢱࢆሗ࿌ࡋ࡚ࡁࡓA ࡜ᆅⅬ B ࡟ࡘ࠸࡚ࡣࠊụࡢ⾲ᒙỈࢆ᥇ྲྀࡋࡓࠋ

[1-4]ࠋࡲࡓࠊỈ㉁࡟㛵㐃ࡋ࡚㛛ụࡢỈ୰ࡢᚤᑠ⏕≀࡟㛵ࡍኟᏘࡢ᥇Ỉࡣࠊ2006, 2007, 2008, 2009, 2010, 2011,ࡿほᐹ⤖ᯝ࡟ࡘ࠸࡚ࡶሗ࿌ࡋ࡚࠸ࡿ[5]ࠋ୍᪉ࠊỈ㉁ㄪᰝ࡟

2015, 2016, 2018, 2019, 2020 ᖺࡢ 7㹼9 ᭶࡟ᐇ᪋ࡋࡓࠋࡇ

ࡘ࠸࡚ࡣࠊ2016 ᖺ௨㝆ࡶ⥅⥆ࡉࢀ࡚࠾ࡾࠊᖺ࡟ࡼࡗ࡚ࡣ

ࡢᮇ㛫࡟」ᩘᅇㄪᰝࢆ⾜ࡗࡓሙྜ࡟ࡣࠊࡑࡢᖹᆒ್ࢆ⟬ฟ෤Ꮨࡢㄪᰝࡶ⾜ࢃࢀ࡚ࡁࡓࠋࡲࡓࠊ2015 ᖺ௨๓࡟࠾࠸࡚ࡋࡓࠋ෤Ꮨࡢ᥇Ỉࡣࠊ2007, 2009, 2011, 2018 ᖺࡢ 12 ᭶࠿ࡶࠊኟᏘ࡟」ᩘᅇㄪᰝࢆ⾜ࡗ࡚࠸ࡿሙྜࡀ࠶ࡾࠊࡇࢀࡽࡢࡽࡑࢀࡒࢀࡢ⩣ᖺࡢ 2 ᭶ࡢ㛫࡟ᐇ᪋ࡋࡓࠋࡇࡢᮇ㛫࡟」ᩘ
ᅇㄪᰝࢆ⾜ࡗࡓሙྜ࡟ࡣࠊࡑࡢᖹᆒ್ࢆ⟬ฟࡋࡓࠋࡲࡓࠊ* ≀㉁ᕤᏛ⛉Department of Chemistry & BiochemistryኟᏘ࠿ࡽ෤Ꮨ࡟࠿ࡅ࡚ࡢỈ㉁ࡢኚ໬ࢆほᐹࡍࡿࡓࡵࠊ2011
ᖺࡢ 8 ᭶࠿ࡽ 2012 ᖺࡢ 3 ᭶ࡲ࡛ࡢ㛫ࠊẖ᭶᥇Ỉࢆ⾜ࡗࡓࠋ20

沼津工業高等専門学校研究報告

第 55 号

ᆅⅬD∾ ሖ ⏝Ỉ㯤℩ᕝᆅⅬC ᆅⅬEᑟỈ㊰㛛ụᆅⅬA

ᆅⅬB

ᅗ 1 㛛ụ࡟࠾ࡅࡿ᥇ỈᆅⅬྠࡌ᭶࡟」ᩘᅇㄪᰝࢆ⾜ࡗࡓሙྜ࡟ࡣࠊࡑࡢᖹᆒ್ࢆ⟬ฟ࡛ࡢ኱ࡁ࡞ኚ໬ࡣㄆࡵࡽࢀ࡞࠿ࡗࡓࠋ୍᪉ࠊᆅⅬ C ࠾ࡼࡧࡋࡓࠋ

ᆅⅬ D ࡛ࡣỈὶࡀ࠶ࡿࡇ࡜ࡸ࿘ᅖ࡟ᮌ❧ࡀ࠶ࡿࡇ࡜࠿ࡽࠊ᥇Ỉࡣࠊ୺࡟᫨๓ᚋ࡟⾜ࡗࡓࠋ᥇Ỉ᫬ࡢẼ ࢆグ㘓ࡍࡿኟᏘ࡛ࡶⱝᖸỈ ࡀప࠸ഴྥࡀぢࡽࢀࡓࠋ෤Ꮨ࡟ࡣࠊࡇࢀ

࡜࡜ࡶ࡟ࠊỈ㉁࡟ࡘ࠸࡚௨ୗࡢ᳨ᰝࢆ⾜ࡗࡓࠋࡽ 4 ᆅⅬࡢỈ ࡣ 10Υ๓ᚋ࡜ྠ⛬ᗘ࡟ప࠿ࡗࡓࠋ࣭Ỉ 㸸ᕷ㈍ࡢ ᗘィࢆ⏝࠸ࡓࠋ

 ㏱どᗘࡣࠊụෆࡢᆅⅬ A ࡜ᆅⅬ B ࡛ࡣࠊኟᏘࠊ෤Ꮨ࡜

࣭㏱どᗘ㸸⮬సࡢ෇⟄≧ᐜჾࡲࡓࡣᕷ㈍ࡢ㏱どᗘィࢆ⏝࠸ࡶ࡟పࡃࠊὶධỈ࡛࠶ࡿᆅⅬ C ࠾ࡼࡧᆅⅬ D ࡢ᪉ࡀ㧗࠿ࡓࠋࡗࡓࠋࡑࡢࡓࡵࠊὶධࡋࡓỈࡀụࡢ୰࡛⃮ࡾࢆ⏕ࡌࠊኟᏘࠊ࣭㟁Ẽఏᑟᗘ㸸ᕷ㈍ࡢ㟁Ẽఏᑟᗘィࢆ⏝࠸ࡓࠋ෤Ꮨ࡟㛵ಀ࡞ࡃ⃮ࡾࡀゎᾘࡋ࡚ࡇ࡞࠿ࡗࡓࡇ࡜ࡀࢃ࠿ࡿࠋ࣭pH㸸ᕷ㈍ࡢ pH ィࡲࡓࡣඹ❧⌮໬Ꮫ◊✲ᡤ♫〇ࣃࢵࢡࢸỈࡢ⃮ࡾࡢཎᅉ࡜ࡋ࡚ࡣࠊከࡃࡢᖺ࡛࣑ࢡࣟ࢟ࢫࢸ࢕ࢫᒓࢫࢺ®ࢆ⏝࠸ࡓࠋ࣭໬Ꮫⓗ㓟⣲せồ㔞㸦COD㸧㸸ඹ❧⌮໬Ꮫ◊✲ᡤ♫〇ࣃࢵࢡࢸࢫࢺ®ࢆ⏝࠸ࡓࠋ࡞࡝ࡢ⸛⸴㢮ࡸࢺࢤ࢖࢝ࢲࣔ࡞࡝ࡢ⥳⸴㢮࡜࠸ࡗࡓࣉࣛࣥࢡࢺࣥࡀほᐹࡉࢀ࡚࠸ࡿ[5]ࠋ࡞࠾ࠊᆅⅬ A ࡢ 2008 ᖺࡢኟᏘ࠾ࡼࡧᆅⅬ C ࡢ 2018 ᖺ෤Ꮨ࡜ 2020 ᖺኟᏘ࡟࠾࠸࡚ࠊ࣭↓ᶵ❅⣲㔞㸸ඹ❧⌮໬Ꮫ◊✲ᡤ♫〇ࣃࢵࢡࢸࢫࢺ®࡟ࡼ

㏱どᗘࡀ 100 cm ࡜௚ࡢ್࡟ẚ㍑ࡋ࡚㧗ࡃ࡞ࡗ࡚࠸ࡿࡀࠊࠊள◪㓟ែ❅ᐃࡋࡓ࢔ࣥࣔࢽ࣒࢘ែ❅⣲㸦NH4+-N㸧ࡇࢀࡣ⏝࠸ࡓ㏱どᗘィ࡟ࡼࡾࠊィ ㊥㞳࡟㐪࠸ࡀ࠶ࡿࡓࡵ⣲㸦NO2--N㸧ࠊ◪㓟ែ❅⣲㸦NO3--N㸧ࡢ㔞ࢆྜィࡋࡓࠋ࡛ࠊ௒ᅇ♧ࡋࡓࢹ࣮ࢱ࡟ࡘ࠸࡚ࡣ 50 cm ࢆ㉸࠼࡚࠸ࢀࡤࠊࡾ࣭ࣜࣥ㓟ែࣜࣥ㸦PO43--P㸧㔞㸸ඹ❧⌮໬Ꮫ◊✲ᡤ♫〇ࣃࢵࢡࢸࢫࢺ®ࢆ⏝࠸ࡓࠋ

㏱どᗘࡀ㧗࠸࡜ุ᩿ࡍ࡭ࡁ࡜⪃࠼ࡽࢀࡿࠋ 㟁Ẽఏᑟᗘ࡟ࡘ࠸࡚ࡣࠊụෆ࡛ࡣᆅⅬ A ࡢ 2008 ᖺኟᏘ
࡜ᆅⅬ B ࡢ 2009 ᖺኟᏘ࡛ 0.2 mS/cm ௨ୖ࡜࡞ࡗࡓࡶࡢࡢࠊ䠏䠊⤖ᯝ䛚䜘䜃⪃ᐹ㸱㸬㸯 㛛ụࡢ㐣ཤ 15 ᖺ㛫ࡢኟᏘ࡜෤ᏘࡢỈ㉁ࡢኚ໬
ኟᏘ࠾ࡼࡧ෤ᏘࡢᆅⅬA, B, C, D ࡟࠾ࡅࡿ᥇Ỉ᫬ࡢẼ ࠊࡑࢀ௨እ࡛ࡣኟᏘ࡜෤Ꮨ್࡛ࡢᕪࡣᑠࡉࡃࠊ2010 ᖺ௨㝆ࡣ኱ࡁ࡞ኚ໬ࡣぢࡽࢀ࡚࠸࡞࠸ࠋᆅⅬ C ࡜ᆅⅬ D ࡢὶධỈࡣࠊኟᏘࠊ෤Ꮨ࡜ࡶ࡟ᆅⅬ A ࡸᆅⅬ B ࡟ẚ㍑ࡋ࡚㧗࠸㟁Ẽఏᑟᗘࢆ♧ࡍഴྥࡀぢࡽࢀࡓࡓࡵࠊᑟ㟁ᛶࡢ㧗࠸≀㉁Ỉ ࠾ࡼࡧỈ㉁ࡢࢹ࣮ࢱࢆᅗ 2 ࡟♧ࡍࠋ᥇Ỉ᫬ࡢẼ ࡟ࡘࡀࡇࢀࡽࡢὶධỈ࡟ࡼࡾụࡢ୰࡟㐠ࡤࢀ࡚࠸ࡿࡶࡢ࡜⪃࠸࡚ࡣࠊኟᏘࠊ෤Ꮨ࡜ࡶ࡟ࠊࡇࡢ 15 ᖺ㛫࡟኱ࡁ࡞ኚ໬ࡣ

࠼ࡽࢀࡿࠋぢࡽࢀ࡞࠿ࡗࡓࠋỈ ࡟ࡘ࠸࡚ࡣࠊኟᏘࡢᆅⅬ A ࡜ᆅⅬ B

 pH ࡟ࡘ࠸࡚ࡣࠊụෆࡢᆅⅬ A ࡜ᆅⅬ B ࡛ࡣኟᏘ࡟ࡣࡣ⁫␃ࡍࡿỈࡀ᪥ග࡟ᙜࡓࡾ㧗 ࡟࡞ࡗ࡚࠸ࡓࡀࠊ15 ᖺ㛫

15 ᖺ㛫ࢆ㏻ࡌ࡚ pH9 ࢆ㉸࠼ࡿ࢔ࣝ࢝ࣜᛶ࡜࡞ࡗ࡚࠸ࡿࡇ

21

門池の水質の変化（ 2006 ～ 2020 年の調査）

40

35

35

30

20

15䠄Υ䠅

25

25

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Ỉ

Ẽ䠄Υ 䠅

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552006 2007 2008 2009 2010 2011//2015 2016//02018 2019 2020

1200.31000.25㟁Ẽఏᑟᗘ䠄㼙㻿㻛㼏㼙䠅㏱ ど ᗘ 䠄 㼏 㼙䠅

080
60
40//

2015 2016//2018 2019 20202006 2007 2008 2009 2010 2011//

2015 2016//

2018 2019 20202006 2007 2008 2009 2010 2011//

2015 2016//2018 2019 20202006 2007 2008 2009 2010 2011//

2015 2016//2018 2019 2020

0.102018 2019 2020

1050840㻯 㻻 㻰 䠄 㼙 㼓㻛 㻸 䠅㼜㻴2006 2007 2008 2009 2010 2011

64230
20102006 2007 2008 2009 2010 2011//2015 2016//02018 2019 2020

500.4450.35

䝸 䞁 㓟 ែ 䝸 䞁 㔞䠄 㼙 㼓 㻛 㻸 䠅40↓ᶵ❅⣲㔞䠄mg/L䠅䠅

//

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30
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100.3
0.25
0.2
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0.1
0.05

502015 2016

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0.05

2002006 2007 2008 2009 2010 2011

2006 2007 2008 2009 2010 2011//2015 2016//

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ᅗ 2 2006 ᖺ࠿ࡽ 2020 ᖺ࡟࠾ࡅࡿ㛛ụࡢỈ㉁ࡢኚ໬
Ẽ 㸸   㸪ኟᏘ㸹   㸪෤Ꮨ㸬ኟᏘ㸸   㸪ᆅⅬ A㸹   㸪ᆅⅬ B㸹   㸪ᆅⅬ C㸹   㸪ᆅⅬ D㸬෤Ꮨ㸸   㸪ᆅⅬ A㸹   㸪ᆅⅬ B㸹   㸪ᆅⅬ C㸹   㸪ᆅⅬ D㸬࡜ࡀࢃ࠿ࡿࠋ㧗࠸ pH ࡣ࣑ࢡࣟ࢟ࢫࢸ࢕ࢫᒓ࡞࡝ࡢ⸛⸴㢮⛬ᗘ࡟ⱝᖸపୗࡍࡿࡶࡢࡢࠊ౫↛࡜ࡋ࡚㧗࠸ pH ࢆ⥔ᣢࡋࡢቑṪࢆಁࡋࠊῐỈ㉥₻㸦࢔࢜ࢥ㸧ࡢⓎ⏕ཎᅉ࡜࡞ࡗ࡚࠸

࡚࠸ࡓࠋ୍᪉ࠊᆅⅬ C ࡜ᆅⅬ D ࡢὶධỈࡢ pH ࡣࠊኟᏘࠊࡿࡶࡢ࡜⪃࠼ࡽࢀࡿࠋࡇࢀࡽࡢᆅⅬ࡛ࡣࠊ෤Ꮨ࡟ࡣ pH8෤Ꮨ࡜ࡶ࡟ụࡢ୰࡯࡝࡟ࡣ㧗ࡃ࡞࠸ࡓࡵࠊụࡢ୰࡟࠾࠸࡚

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沼津工業高等専門学校研究報告pH ࡀ㧗ࡲࡿ⎔ቃࡀ㔊ᡂࡉࢀ࡚࠸ࡿࡶࡢ࡜ᛮࢃࢀࡿࠋ㛛ụࡣᑠつᶍࡢụ࡛࠶ࡿࡇ࡜࠿ࡽࠊ
ࠕ⏕ά⎔ቃࡢಖ඲࡟㛵ࡍࡿ⎔ቃᇶ‽㸦†἟㸧ࠖࡢ pH ࡢᇶ‽ࢆࡑࡢࡲࡲᙜ࡚ࡣࡵࡿࡇ
࡜ࡣ࡛ࡁ࡞࠸ࡀࠊ㢮ᆺ B ࡢ㎰ᴗ⏝Ỉࡸ㢮ᆺ C ࡢ⎔ቃಖ඲ࡢᇶ‽࡛࠶ࡿ pH6.0 ௨ୖ 8.5 ௨ୗࢆ‶ࡓࡋ࡚࠾ࡽࡎࠊⰋ࠸Ỉ㉁⎔ቃ࡜ࡣゝ࠸㞴࠸ࠋ COD ࡣࠊᆅⅬ A ࡛ࡣ 2008 ᖺ࡜ 2009 ᖺࡢኟᏘࠊᆅⅬ B
࡛ࡣ 2009 ᖺࡢኟᏘ࡟ࡑࢀࡒࢀ㧗್ࡀぢࡽࢀࡓࡀࠊࡑࡢᚋࡣ 20 mg/L ࢆ㉸࠼ࡿࡇ࡜ࡣ࡞ࡃࠊụෆࡢ್ࡣẚ㍑ⓗపࡃ᥎⛣ࡋ࡚ࡁࡓࠋᆅⅬ C ࡜ᆅⅬ D ࡢኟᏘ࠾ࡼࡧࡍ࡭࡚ࡢᆅⅬࡢ෤Ꮨࡢ್ࡣࠊ⣙ 10 mg/L ௨ୗ࡛࠶ࡗࡓࡓࡵࠊኟᏘࡢụෆ࡟࠾࠸࡚ COD ࡢୖ᪼ࡀ㉳ࡇࡗ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡿࠋ
ࠕ⏕ά⎔ቃࡢಖ඲࡟㛵ࡍࡿ⎔ቃᇶ‽㸦†἟㸧ࠖࡢ COD ࡟࠾ࡅࡿࠊ㢮ᆺ B ࡢ㎰ᴗ⏝Ỉࡢᇶ‽࡛࠶ࡿ 5 mg/L ௨ୗࡸ㢮ᆺ C ࡢ⎔ቃಖ඲ࡢᇶ‽࡛࠶ࡿ 8 mg/L ௨ୗ࡜࠸࠺᮲௳ࡼࡾࡶ㧗࠸್

第 55 号

⾲ 1 2018 ᖺ෤Ꮨ࡟࠾ࡅࡿᆅⅬ C ࡜ᆅⅬ E ࡢẚ㍑ᐃ㡯┠Ỉ 㸦Υ㸧
㏱どᗘ㸦cm㸧㟁Ẽఏᑟᗘ㸦mS/cm㸧
pH
COD㸦mg/L㸧↓ᶵ❅⣲㔞㸦mg/L㸧ࣜࣥ㓟ែࣜࣥ㔞㸦mg/L㸧

ᆅⅬ C
12.5
100
0.19
7.0
ND
46.4
0.15

ᆅⅬ E
13.5
56.8
0.35
7.5
13
31.0
2.00

ND㸸᳨ฟ㝈⏺௨ୗ㸬
ᆅⅬ E ࡛ࡢỈ㉁ࢆࠊྠ᫬࡟᥇ྲྀࡋࡓᆅⅬ C ࡛ࡢỈ㉁࡜ẚ㍑ࡋࡓࡶࡢࢆ⾲ 1 ࡟♧ࡍࠋ Ỉ ࡜↓ᶵ❅⣲㔞ࢆ㝖ࡃࡍ࡭࡚ࡢ㡯┠࡟࠾࠸࡚ࠊᆅⅬ E
࡛ࡣᆅⅬ C ࡼࡾࡶỈ㉁ࡀప࠸ࡇ࡜ࡀࢃ࠿ࡗࡓࠋࡇࡢഃ⁁ࡢỈ※ࡣ᫂☜࡛ࡣ࡞ࡃỈ㔞ࡶከࡃࡣ࡞࠸ࡶࡢࡢࠊ௒ᚋࡢᑐᛂࡀᚲせ࡜࡞ࡿ࠿ࡶࡋࢀ࡞࠸ࠋࡀࠊ2010 ᖺ௨㝆ࡶᩓぢࡉࢀࡓࠋ ↓ᶵ❅⣲㔞ࡣࠊụෆࡢᆅⅬ A ࠾ࡼࡧᆅⅬ B ࡛ࡣࠊᆅⅬ A
࡛ࡢ 2006 ᖺ࡜ 2008 ᖺࢆ㝖ࡁࠊኟᏘࠊ
෤Ꮨ࡜ࡶ࡟⣙ 5 mg/L௨ୗ࡛࠶ࡗࡓࠋ୍᪉ࠊὶධỈ࡟ࡘ࠸࡚ࡣᆅⅬ C ࡢኟᏘ࠾ࡼࡧ෤Ꮨࡣࠊ2011 ᖺ௨㝆ࡣ⣙ 10 mg/L ࢆ㉸࠼ࡿ㧗್ࢆ♧ࡋ࡚࠸ࡿࠋᆅⅬ D ࡟࠾࠸࡚ࡣࠊ2011 ᖺࡢኟᏘࡢࡳⱝᖸࡢ㧗್ࢆ♧ࡋࡓࠋࡇࡢࡇ࡜࠿ࡽࠊ↓ᶵ❅⣲ࡢከࡃࡣ 2011 ᖺ௨㝆ࠊᆅⅬ C ࡢᑠᕝ࠿ࡽὶධࡋ࡚ࡁࡓྍ⬟ᛶࡀ࠶ࡿࠋࡇࡢᑠ
ᕝࡣࠊụࡢ໭ഃ࡟ᗈࡀࡿ᳃ᯘ࡜⏿࠿ࡽὶࢀ࡚࠾ࡾࠊ⭉ⴥᅵ➼ࡀ❅⣲※࡜࡞ࡗ࡚࠸ࡿྍ⬟ᛶࡀ࠶ࡿࠋࠕ⏕ά⎔ቃࡢಖ඲࡟㛵ࡍࡿ⎔ቃᇶ‽㸦†἟㸧ࠖࡢ඲❅⣲ࡢᇶ‽࡟ᑐࡋ࡚ࡣࠊ
㢮ᆺ V ࡢ㎰ᴗ⏝Ỉࡸ⎔ቃಖ඲ࡢᇶ‽࡛࠶ࡿ 1 mg/L ௨ୗࢆ‶ࡓࡋ࡚࠸࡞࠸ࠋ ࣜࣥ㓟ែࣜࣥ㔞ࡣࠊụෆࡢᆅⅬ A ࠾ࡼࡧᆅⅬ B ࡟࠾࠸࡚ࡣࠊኟᏘࠊ෤Ꮨ࡜ࡶ࡟ 0.1 mg/L ࢆ㉸࠼ࡿࡇ࡜ࡣ࡞ࡃࠊ
15 ᖺ㛫ࡢኚືࡣᑠࡉ࠿ࡗࡓࠋᆅⅬ C ࠾ࡼࡧᆅⅬ D ࡢὶධỈࡣࠊኟᏘࠊ෤Ꮨ࡟ࡼࡽࡎ 0.1 mg/L ࢆ㉸࠼ࡿ㧗್࡜࡞ࡿࡇ࡜ࡀᗘࠎぢࡽࢀࡓࠋࡑࡢࡓࡵࠊὶධỈ࡟ࡣࣜࣥࡀྵࡲࢀࡿࡶࡢࡢࠊụෆ࡛ࡣࠕ⏕ά⎔ቃࡢಖ඲࡟㛵ࡍࡿ⎔ቃᇶ‽㸦†἟㸧ࠖࡢ඲ࣜࣥࡢᇶ‽࡟ᑐࡋ࡚ࠊ㢮ᆺ V ࡢ㎰ᴗ⏝Ỉࡸ⎔ቃಖ඲ࡢᇶ‽࡛࠶ࡿ 0.1 mg/L ௨ୗࢆ࡯ࡰ‶ࡓࡋ࡚ࡁࡓࠋụ㸱㸬㸱 㛛ụࡢኟᏘ࠿ࡽ෤Ꮨ࡟࠿ࡅ࡚ࡢỈ㉁ࡢኚ໬
2011 ᖺࡢ 8 ᭶࠿ࡽ 2012 ᖺࡢ 3 ᭶ࡲ࡛ࡢᮇ㛫࡟࠾ࡅࡿࠊ
୺࡟ụෆࡢỈࡢᆅⅬ A ࡜㯤℩ᕝ࠿ࡽࡢὶධỈࡢᆅⅬ D ࡛ࡢỈ㉁ࡢኚ໬ࢆほᐹࡋࡓ⤖ᯝࢆᅗ 3 ࡟♧ࡍࠋẼ ࡣࠊ8 ᭶࠿ࡽ⩣ᖺࡢ 1 ᭶࡟࠿ࡅ࡚పୗࡋࠊࡑࡢᚋ 3 ᭶ࡲ࡛ࡣࢃࡎ࠿
࡟ୖ᪼ࡋࡓࠋᆅⅬ A ࡜ᆅⅬ D ࡢỈ ࡶࠊࡑࢀࡒࢀẼ ࡜ྠᵝࡢኚ໬ࢆ♧ࡋࡓࡀࠊᆅⅬ D ࡟ẚ㍑ࡍࡿ࡜ᆅⅬ A ࡢỈࡣኟᏘ࡟㧗 ࡛෤Ꮨ࡟ప ࡜࡞ࡾࠊࡑࡢኚ໬ࡀ኱ࡁ࠿ࡗ
ࡓࠋ
㏱どᗘ࡟ࡘ࠸࡚ࡣࠊ8 ᭶࠿ࡽ⩣ᖺࡢ 3 ᭶ࡲ࡛ࢆ㏻ࡋ࡚ᆅ
Ⅼ A ࡢ᪉ࡀᆅⅬ D ࡟ẚ㍑ࡋ࡚ప࠸ഴྥࡀぢࡽࢀࡓࡶࡢࡢࠊ
ࡑࢀࡒࢀࡢᆅⅬ࡛ኟᏘ࡜෤Ꮨ࡛ࡢ㐪࠸ࡣ࠶ࡲࡾぢࡽࢀ࡞࠿ࡗࡓࠋ 㟁ẼఏᑟᗘࡣࠊᆅⅬ A ࡜ᆅⅬ D ࡢ࠸ࡎࢀ࡟࠾࠸࡚ࡶ 8᭶࠿ࡽ⩣ᖺࡢ 3 ᭶ࡲ࡛ࢆ㏻ࡋ࡚ኚ໬ࡀ࡯ࡰぢࡽࢀࡎࠊࡲࡓ
ᆅⅬ㛫ࡢᕪࡶᆅⅬ D ࡢ᪉ࡀᆅⅬ A ࡼࡾࡶⱝᖸ㧗࠸ഴྥࡀぢࡽࢀࡓࡢࡳ࡛࠶ࡗࡓࠋࡇࡢ㛫ࡢ 11 ᭶ࡢࡳࠊᆅⅬ D ࡛ୖ᪼ࡀㄆࡵࡽࢀࡓࠋ
 pH ࡣᆅⅬ A ࡢ᪉ࡀᆅⅬ D ࡟ẚ㍑ࡋ࡚㧗࠿ࡗࡓࠋᆅⅬ D࡛ࡣ 8 ᭶࠿ࡽ⩣ᖺࡢ 3 ᭶ࡲ࡛ኚືࡣ࡯ࡰぢࡽࢀ࡞࠿ࡗࡓࡢෆࡢࣜࣥࡢ㔞ࡀከࡃ࡞࠸ࡇ࡜ࡣࠊ㛛ụ࡟⌛⸴㢮ࡀከࡃほᐹ࡟ᑐࡋࠊᆅⅬ A ࡛ࡣ 8 ᭶࠿ࡽ 11 ᭶࡟࠿ࡅ࡚పୗࡋࠊࡑࡢࡉࢀࡿせᅉࡢ୍ࡘ࡛࠶ࡿࡶࡢ࡜⪃࠼ࡽࢀࡿ[5]ࠋᚋ⩣ᖺࡢ 3 ᭶ࡲ࡛ᚎࠎ࡟ቑຍࡋࡓࠋ

㸱㸬㸰 ὶධᆅⅬ E ࡢỈ㉁ ࡜ࡇࢁ࡛ࠊ2018 ᖺࡢ෤Ꮨ࡟ụࡢ▼ᇉࡢᕤ஦ࡢࡓࡵ࡟኱つᶍ࡞ᢤỈసᴗࡀ⾜ࢃࢀࡓࠋࡑࡢ㝿ࡢほᐹ࡛ࠊᆅⅬ C ࡢᑠᕝ࡜ᆅⅬ D ࡢ㯤℩ᕝࡢỈ㊰௨እ࡟ࠊࡑࡢ㛫࡟఩⨨ࡍࡿᆅⅬE ࡢഃ⁁࠿ࡽࡶὶධỈࡀ࠶ࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋࡇࢀࡽ 3 ࠿ᡤ௨እ࡟ࡣἙᕝỈࠊ‪Ỉࡣぢࡽࢀ࡞࠿ࡗࡓࠋࡑࡇ࡛ࠊࡇࡢ

 COD ࡣࠊᆅⅬ A ࡜ᆅⅬ D ࡜ࡶ࡟ࠊ8 ᭶௨㝆⥅⥆ࡋ࡚పୗࡋࠊ࠸ࡎࢀࡶ 12 ᭶࠿ࡽ⩣ᖺࡢ 3 ᭶ࡲ࡛ࡢ෤Ꮨ࡟ࡣప್
ࢆ♧ࡋࡓࠋ ↓ᶵ❅⣲㔞ࡣࠊ8 ᭶࠿ࡽ⩣ᖺࡢ 3 ᭶ࡲ࡛ࢆ㏻ࡋ࡚ࠊᆅⅬA ࡼࡾࡶᆅⅬ D ࡢ᪉ࡀ㧗࠸ഴྥࡀぢࡽࢀࠊᆅⅬ D ࡢ 11 ᭶ࡢ್ࡀ㧗࠿ࡗࡓ௚ࡣࠊࡇࡢᮇ㛫୰࡛ࡢ኱ࡁ࡞ኚືࡣ୧ᆅⅬ

23

35.0

35

30.0

30

25.025䠄Υ 䠅20.0

䠄Υ 䠅20Ẽ

15.0

Ỉ

門池の水質の変化（ 2006 ～ 2020 年の調査）

1510.010

5.0

52011.82011.92011.10

2011.112011.122012.12012.20

2012.30.3

50

0.25

4030
200

2011.82011.92011.102011.11

2011.122012.12012.2

2011.122012.12012.2

2012.32011.92011.10

2011.112011.122012.12012.2

2012.32011.82011.92011.10

2011.112011.122012.12012.2

2012.32011.82011.92011.10 2011.11

2011.122012.12012.2

2012.30.15
0.1

2011.825
20

㻯㻻㻰䠄㼙㼓㻛㻸䠅8

㼜㻴

2011.11

0

10

6

4

15

10
52

2011.82011.92011.10

2011.112011.122012.12012.202012.3

0.6

25

0.5

䝸䞁㓟ែ䝸䞁㔞䠄㼙㼓㻛㻸䠅

30

20
15
10

50

2011.100.2

2012.312

02011.90.05

10↓ᶵ❅⣲㔞䠄㼙㼓㻛㻸䠅

2011.860㟁Ẽఏᑟᗘ䠄㼙㻿㻛㼏㼙䠅㏱ ど ᗘ 䠄 㼏 㼙䠅

0.0

0.4
0.3
0.2
0.1

2011.82011.92011.102011.11

2011.122012.12012.2

2012.30ᅗ 3 2011 ᖺ 8 ᭶࠿ࡽ 2012 ᖺ 3 ᭶࡟࠾ࡅࡿ㛛ụࡢỈ㉁ࡢኚ໬
   㸪Ẽ 㸹   㸪ᆅⅬ A㸹   㸪ᆅⅬ C㸹   㸪ᆅⅬ D㸬࡛ㄆࡵࡽࢀ࡞࠿ࡗࡓࠋ↓ᶵ❅⣲㔞ࡢኚ໬ࡣࠊ㟁Ẽఏᑟᗘࡢ䠐䠊䜎䛸䜑ኚ໬࡜㢮ఝࡋ࡚࠸ࡓࠋ

௒ᅇሗ࿌ࡋࡓ⤖ᯝ࠿ࡽࠊࡲࡎࠊ2006 ᖺ࠿ࡽ 2020 ᖺࡲ࡛ࡢ ࣜࣥ㓟ែࣜࣥ㔞ࡣࠊᆅⅬ A ࡛ࡣ 8 ᭶࠿ࡽ⩣ᖺࡢ 3 ᭶࡟࠿15 ᖺ㛫࡛ࠊỈ㉁ࢆほᐹࡍࡿࡓࡵ࡟⏝࠸ࡓ㏱どᗘࠊ㟁Ẽఏᑟࡅ࡚ࠊ࡯ࡰኚື࡞ࡃప್࡛࠶ࡗࡓࠋ୍᪉ࠊᆅⅬ D ࡛ࡣ 11

ᗘࠊpHࠊCODࠊ↓ᶵ❅⣲㔞ࠊࣜࣥ㓟ែࣜࣥ㔞ࡢ࠸ࡎࢀࡢ᭶௨㝆⩣ᖺࡢ 3 ᭶ࡲ࡛ࠊ㧗್ࢆ♧ࡋࡓࠋᐃ㡯┠࡟࠾࠸࡚ࡶ኱ࡁ࡞⤒ᖺኚ໬ࡣぢࡽࢀࡎࠊ㛛ụࡢỈ

24

沼津工業高等専門学校研究報告

第 55 号㉁࡟ࡣⴭࡋ࠸ᝏ໬ࡶᨵၿࡶ㉳ࡇࡗ࡚࠸࡞࠸ࡇ࡜ࡀࢃ࠿ࡿࠋࡁࠊබ㛤ㅮᗙࡸฟ๓ᤵᴗ➼ࢆ㏻ࡋ࡚ᆅᇦ♫఍࡟⎔ቃ᝟ሗࢆ㛛ụ࡟㛵ࡋ࡚ࡣࠊᆅⅬ C ࠾ࡼࡧᆅⅬ D ࡢὶධỈ࡜ᆅⅬ Aᥦ౪ࡋ࡚࠸ࡃࡼ࠺ࠊດຊࡍࡿᡤᏑ࡛࠶ࡿࠋ࠶ࡽࡓࡵ࡚ࡇࡇ

࠾ࡼࡧᆅⅬ B ࡢụෆࡢỈࡢỈ㉁ࡢ≉ᚩ࡜ࡋ࡚ࠊ௨ୗࡢⅬࡀ࡟ࠊࡇࡢ 15 ᖺ㛫ࡢỈ㉁ࣔࢽࢱࣜࣥࢢάື࡟ཧຍࡋ࡚࠸ࡓ

ᣲࡆࡽࢀࡿࠋࡔ࠸ࡓᆅᇦࡢᑠᏛ⏕ 24 ྡࠊ୰Ꮫ⏕ 64 ྡࠊ㧗ᰯ⏕ 10 ྡࠊ࣭ụෆࡢỈ ࡣὶධỈ࡟ẚ㍑ࡋ࡚ኟᏘ࡟ୖ᪼ࡋ෤Ꮨ࡟ࡣప

ᆅᇦఫẸ 18 ྡࠊᮏᰯᏛ⏕ 65 ྡࠊᮏᰯᩍ⫋ဨ 41 ྡࠊᘏ࡭ୗࡋ࡚ࠊᏘ⠇࡟ࡼࡿᕪࡀ኱ࡁ࠸ࠋ223 ྡࡢ᪉ࠎ࡟ឤㅰࡢពࢆ⾲ࡍࡿࡶࡢ࡛࠶ࡿࠋ

࣭㏱どᗘࡣὶධỈ࡟ẚ㍑ࡋ࡚ụෆࡢỈࡣపୗࡋ࡚࠾ࡾࠊኟᏘࡔࡅ࡛࡞ࡃࠊ෤Ꮨ࡟࠾࠸࡚ࡶ࠶ࡲࡾᨵၿࡉࢀ࡞࠸ࠋ࣭ᑟ㟁ᛶࡢ㧗࠸≀㉁ࠊᰤ㣴ሷࡢ↓ᶵ❅⣲ࠊࣜࣥ㓟ែࣜࣥࡀࠊཧ⪃ᩥ⊩ኟᏘࠊ෤Ꮨ࡜ࡶ࡟ὶධỈ࠿ࡽụෆ࡟ὶࢀ㎸ࡳࠊụෆ࡟࠾࠸[1] ➉ཱྀᫀஅ, ⶈᐇᩥᙪ, ௚ (2009): ἟ὠ㧗ᑓ◊✲ሗ࿌,࡚ⱝᖸపୗࡍࡿࠋụෆ࡛ࡣࠊࠕ⏕ά⎔ቃࡢಖ඲࡟㛵ࡍࡿ⎔43, 283-286.

ቃᇶ‽㸦†἟㸧ࠖࡢ㢮ᆺ V ࡢ㎰ᴗ⏝Ỉࡸ⎔ቃಖ඲ࡢᇶ‽࡟[2] ⰾ㔝ᜤኈ, ⶱᒣኟ⨾, ௚ (2010): ἟ὠ㧗ᑓ◊✲ሗ࿌,ᑐࡋ࡚ࡣࠊ❅⣲㔞ࡣ㧗࠸ࡀࣜࣥࡢ㔞ࡣ᮲௳ࢆ࡯ࡰ‶ࡓࡋ࡚

44, 293-298.

࠸ࡿࠋ[3] ⰾ㔝ᜤኈ㸪ⰾ㔝ᩥ㤶㸪௚ (2013): ᢏ⾡࣭ᩍ⫱◊✲ㄽᩥ

࣭COD ࡣࠊኟᏘࡢụෆ࡟࠾࠸࡚ࡑࡢୖ᪼ࡀほᐹࡉࢀࠊࠕ⏕ㄅ, 20, 21-29.

ά⎔ቃࡢಖ඲࡟㛵ࡍࡿ⎔ቃᇶ‽㸦†἟㸧ࠖࡢ㢮ᆺ B ࡢ㎰ᴗ[4] ➉ཱྀᫀஅ, 㧘ᶫ㥴ᖹ, ௚ (2019) : ᢏ⾡࣭ᩍ⫱◊✲ㄽᩥ⏝Ỉࡸ㢮ᆺ C ࡢ⎔ቃಖ඲ࡢᇶ‽࡟ᑐࡋ࡚㧗್࡜࡞ࡿࡇ࡜

ㄅ, 26, 1-9.

ࡀ࠶ࡿࠋ[5] ⰾ㔝ᜤኈ, 㕥ᮌ ⊛, ௚ (2020): ἟ὠ㧗ᑓ◊✲ሗ࿌,࣭pH ࡣࠊὶධỈ࡛ࡣࡑࢀ࡯࡝㧗ࡃ࡞࠸ࡀࠊụෆ࡛ࡣୖ᪼

54, 37-44.

ࡋࠊኟᏘࡔࡅ࡛࡞ࡃ෤Ꮨ࡟࠾࠸࡚ࡶ࠶ࡲࡾపୗࡀぢࡽࢀ࡞࠸ࠋࠕ⏕ά⎔ቃࡢಖ඲࡟㛵ࡍࡿ⎔ቃᇶ‽㸦†἟㸧ࠖࡢ㢮ᆺ Bࡢ㎰ᴗ⏝Ỉࡸ㢮ᆺ C ࡢ⎔ቃಖ඲ࡢᇶ‽࡟ᑐࡋ࡚ࠊ㧗್࡛࠶ࡿࠋ ࡲࡓࠊᆅⅬ E ࡢὶධỈ࡟ࡘ࠸࡚ࡣࠊ2018 ᖺࡢ෤Ꮨࡢࢹ࣮ࢱࡢࡳ࡛࠶ࡿࡀࠊᆅⅬ C ࡢὶධỈ࡜ẚ㍑ࡋ࡚ࠊỈ ࡜↓ᶵ❅⣲㔞ࢆ㝖ࡃࡍ࡭࡚ࡢ㡯┠࡟࠾࠸࡚Ỉ㉁ࡀప࠿ࡗࡓࠋ 㛛ụࡣࠊ㒊ศⓗ࡞⎔Ỉࡣ⥅⥆ࡋ࡚⾜ࢃࢀ࡚࠸ࡿࡶࡢࡢࠊᮏሗ࿌ࡢࢹ࣮ࢱ࡟ࡶぢࡽࢀࡿࡼ࠺࡟ࠊᐩᰤ㣴໬ࡀ㉳ࡇࡗ࡚࠾ࡾⰋ࠸Ỉ⎔ቃ࡛࠶ࡿ࡜ࡣゝ࠼࡞࠸ࠋࡋ࠿ࡋࠊ⮬↛ࡢụࢆඖ࡟ࡋࡓ࠶ࡿ⛬ᗘ኱ࡁ࠸つᶍࡢ⁀ụ࡛࠶ࡿࡇ࡜࠿ࡽࠊ㈝⏝ࡢ࠿࠿ࡿὼ ᕤ஦➼࡟ࡼࡿỈ㉁ࡢᨵၿ⟇ࡣࠊ୍᫬ⓗ࡞ຠᯝࡋ࠿࡞࠸ࡇ࡜ࡀ༴᝹ࡉࢀࡿࠋ㎰ᴗ⏝࡜ࡋ࡚ࡔࡅ࡛࡞ࡃࠊ⌧ᅾ࡛ࡣබᅬụ࡜ࡋ࡚ᆅᇦࡢᬒほࡸఫẸࡢ᠁࠸ࡢሙࢆᥦ౪ࡋࡓࡾࠊᆅᇦࡢඣ❺ࡓࡕࡢ⎔ቃᩍ⫱ࡢᩍᮦ࡜࡞ࡗࡓࡾࠊࡲࡓ㜵⅏࡟฼⏝ࡉࢀࡓࡾ࡜ከᵝ࡞┠ⓗࢆᢸ࠺ࡼ࠺࡟࡞ࡗ࡚ࡁࡓ୰ࠊ㛛ụ࡟ồࡵࡽࢀࡿỈ㉁࡜⮬↛⎔ቃ࡟ࡘ࠸࡚ࠊ௒୍ᗘఫẸ࡜⮬἞యࡀ୍⥴࡟࡞ࡗ࡚⪃࠼࡚࠸ࡃᚲせࡀ࠶ࡿࡼ࠺࡟ឤࡌࡿࠋ ᮏᰯ࡟࠾ࡅࡿࠕ㛛ụ⎔ቃㄪᰝ㝲㸟ࠖࡢάືࡣࠊ௒ᖺ࡛ 15ᖺ┠࡟࡞ࡿࡀࠊࡇࡢ㛫ࠊ2013 ᖺ࠿ࡽࡣᆅඖ⮬἞య࡟࠾࠸࡚ࠊࡲࡓ᭱㏆࡛ࡣᆅᇦ⮬἞఍࡟࠾࠸࡚ࡶࠊ㛛ụࡢỈ㉁ࡢࣔ
ࢽࢱࣜࣥࢢࡀ⾜ࢃࢀࡿࡼ࠺࡟࡞ࡾࠊ㛛ụࡢ⎔ቃ࡟㛵ࡍࡿ㛵ᚰࡢ㧗ࡲࡾࡀឤࡌࡽࢀࡿࠋࠕ㛛ụ⎔ቃㄪᰝ㝲㸟ࠖࡀࠊᚤຊ࡞ࡀࡽࡶఫẸࡢᆅᇦ⎔ቃ࡬ࡢព㆑ࡢྥୖ࡟㈉⊩࡛ࡁࡓࡢ࡛࠶ࢀࡤࠊࡑࡢ┠ⓗࢆᯝࡓࡋࡓࡶࡢ࡜ᛮ࠺ࠋ௒ᚋࡶᘬࡁ⥆