7沼津工業高等専門学校研究報告
第 57 号，2023 年 2 月ᚚẊሙᕷ࡟࠾ࡅࡿ⾨ᫍ⏬ീࢆ⏝࠸ࡓࢼࣛᯤࢀ᳨ฟࡢணഛⓗㄪᰝ❑⏣㞷ே ᫍᕝ೺ྐ ᑠᰩᖿ୍ 㕥ᮌ㟼⏨ Preliminary ,nvestigation for the 'etection of Japanese 2ak :ilt
8sing 6atellite ,magery in Gotemba CityKUBOTA Yukito*1, HOSHIKAWA Takeshi*2, OGURI Masakazu*3, SUZUKI Shizuo*1
Abstract: Recently, Japanese oak wilt damage has been increasing throughout Japan. This study
aimed to assess the potential for estimating important parameters of Japanese oak wilt withsatellite data. We estimated differences in composition between oak wilt and healthy oak sites
in two years (2020 and 2019) in Gotemba City, Shizuoka Prefecture. Multispectral bands wereused to detect oak wilt with a vegetation index NDVI (normalized difference vegetation index)
of Sentinal-2. The most severely damaged site showed that the NDVI values in 2020 (a damagedyear) were lower than those at the same site in 2019 (a non-damaged year) and those at a control
site in both years. The study was preliminary research and demonstrated encouraging results
using the freely accessible and middle-resolution Sentinel-2 imagery, which is expected to offertools for detecting, mapping, and monitoring Japanese oak wilt.
Key Words:NDVI, Quercus serrata Murray, Remote sensing, Satellite image, Sentinel-2

ࡣࡌࡵ࡟ᯤࢀࢆᨺ⨨ࡋࡓሙྜࠊᢡᦆࡸಽᮌ࡟ࡼࡾ᪋タࡸே࡬ࡢ༴ࢼࣛᯤࢀࡣࠊ⣒≧⳦ࡢ୍✀࡟ࡼࡿⴎ෼⑓࡛࠶ࡿࠋ5 ᭶㝤ᛶࡀୖ᪼ࡍࡿࠋࡲࡓࠊࢼࣛᯤࢀ࡟ࡼࡿ࡝ࢇࡄࡾࡢ⏕⏘࠿ࡽ 8 ᭶࡟࠿ࡅ࡚ࠊࡇࡢ⣒≧⳦㸦⑓ཎ⳦㸧ࢆ፹௓ࡍࡿ࢝

୙㊊࡟ࡼࡗ࡚⇃ࡀ㣵୙㊊࡟㝗ࡾࠊே㔛࡬ࡢฟἐࡢ༴㝤ᛶࢩࣀࢼ࢞࢟ࢡ࢖࣒ࢩࡢ౵ධ࡟ࡼࡾឤᰁࡍࡿ[1]ࠋ⑓ཎ⳦࡟

ࡀୖ᪼ࡍࡿࡓࡵࠊ㍍どࡍࡿࡇ࡜ࡀ࡛ࡁ࡞࠸[3]ࠋ

ឤᰁࡋࡓᶞᮌࡣࠊ㜵ᚚ཯ᛂ࡟ࡼࡾ஧ḟ௦ㅰ≀㉁㸦ࢸࣝ࣌⌧ᅾࠊࢼࣛᯤࢀᑐ⟇ࡣ୺࡟ 2 ࡘࡢ᪉ἲࡀ࠶ࡿࠋ1 ࡘ┠ࣥ㢮ࡸࣇ࢙ࣀ࣮ࣝᛶ≀㉁㸧ࢆ⏕⏘ࡍࡿࡀࠊࡇࡢ≀㉁࡟ࡼ

ࡣࠊఆ᥇࡟ࡼࡾᯤṚᮌෆࡢ࢝ࢩࣀࢼ࢞࢟ࢡ࢖࣒ࢩࢆ㥑㝖ࡿ⑓ཎ⳦࡬ࡢ㜼ᐖຠᯝࡀ࡞࠸ࡲࡲᶞᮌෆࡢ㐨⟶࡟⛣ືࡍࡍࡿ᪉ἲࠊࡶ࠺ 1 ࡘࡣࠊᯤṚࡋ࡟ࡃ࠸ⱝ࠸ᮌࡢࡳṧࡋឤࡿࠋࡇࡢ≀㉁ࡣἜ≧ࡢᛶ㉁ࢆᣢࡘࡓࡵࠊᑟ⟶࡟࠾ࡅࡿỈᰁ㜵Ṇࢆࡍࡿ᪉ἲ࡛࠶ࡿ[1]ࠋᮏ◊✲࡛ࡣࠊ1 ࡘ┠ࡢᑐ⟇ศࡸᶞᾮࡢὶࢀࢆ㜼ᐖࡋ㏻Ỉ㞀ᐖ࡟㝗ࡽࡏࡿࠋࡑࡢ⤖ᯝࠊ࡟ὀ┠ࡋఆ᥇ࡍࡿᯤṚᮌࢆ࣮ࣜࣔࢺࢭࣥࢩࣥࢢ࡟ࡼࡾほⴥࡢⴎࢀࡸኚⰍࡀ㢧ⴭ࡟⾲ࢀᛴ㏿࡟ᯤṚࡍࡿࠋⴥࡢኚⰍ

ࡍࡿࠋࢼࣛᯤࢀࡣࠊ8 ᭶࠿ࡽ 9 ᭶࡟࠿ࡅ࡚ⴥࡀኚⰍࡍࡀ⾲ࢀࡓẁ㝵࡛ࡣࠊᶞᮌࡢ⣽⬊ࡣቯṚࡋࠊඖࡢ೺඲ᮌ࡟ࡿ≉ᚩࡀ࠶ࡿࠋᮏ◊✲ࡣࠊ⌧ᆅ㋃ᰝ࡟ࡼࡾᯤṚᮌࡢከ࠸ᡠࡿࡇ࡜ࡣ୙ྍ⬟࡛࠶ࡿ[1]ࠋᆅⅬࢆ☜ㄆࡋࠊࡑࡢ⠊ᅖࡢ⾨ᫍ⏬ീ࡜ẚ㍑ࡍࡿࡇ࡜࡛ࠊ

㏆ᖺࠊࢼࣛᯤࢀࡣ඲ᅜ࡛ࡶ⿕ᐖࡀቑຍഴྥ࡟࠶ࡿࠋ௧ࢼࣛᯤࢀⓎ⏕ሙᡤࡢ཯ᑕࢫ࣌ࢡࢺࣝഴྥࢆ♧ࡍࠋ

࿴ 2 ᖺ࡟ࠊከࡃࡢ㒔㐨ᗓ┴࡛⿕ᐖᮦ✚㔞ࡀᣑ኱ࡋ࡚࠸ࡿ୰ࠊ㟼ᒸ┴඲ᅵ࡛ࡑࡢ㔞ࡣࠊ9,100 m3 ࡟㐩ࡋࡓ[2]ࠋࢼࣛ᪉ἲ

*1 㟁ᏊไᚚᕤᏛ⛉ࢼࣛᯤࢀ᝟ሗࡢ཰㞟

Department of Electronic Control System Engineering*2 㟼ᒸ┴❧㎰ᯘ⎔ቃᑓ㛛⫋኱Ꮫ
Shizuoka Professional University of Agriculture*3 ᪥ᮏ DMC ᰴᘧ఍♫Nihon DMC Co., Ltd.
㈐௵ⴭ⪅: 㕥ᮌ㟼⏨ (shizuo.suzuki@numazu-ct.ac.jp)ᚚẊሙᕷᙺᡤ࠿ࡽࡢ㈨ᩱࢆࡶ࡜࡟ 2020 ᖺࡢᚚẊሙᕷ࡟࠾࠸࡚ࢼࣛᯤࢀ⿕ᐖᮌࡀከ࠸ᆅⅬࢆ⾲ 1 ࡟グࡋࡓࠋẚ㍑ᑐ㇟࡜ࡋ࡚ࢥࢼࣛࡢ೺඲ᮌࡀ⏕⫱ࡍࡿᆅⅬࢆ Control࡜ࡋ࡚㑅ᐃࡋࡓࠋ㑅ᐃ࡟࠶ࡓࡗ࡚ࡣࠊ⮬↛⎔ቃㄪᰝ WebGIS ࡢ 2 ୓ 5 ༓ศࡢ 1 ᳜⏕ᅗࢆ⏝࠸ࡓ[4]ࠋࡲࡓࠊ⾲ 1 ࡢ఩⨨ࢆᆅᅗୖ࡟♧ࡋࡓ㸦ᅗ 1㸧ࠋ8

沼津工業高等専門学校研究報告

第 57 号

Green, Red, Near̺infrared (NIR)ࡢ 4 ࣂࣥࢻࢆ⏝࠸ࡓ[6]ࠋ⾲ 1 ࡟࠾࠸࡚᭱ࡶ⿕ᐖᮏᩘࡀከ࠸ᆅⅬ 1 ࡜ Control⿕ᐖᆅⅬࡢ⌧ᆅ☜ㄆ
⾲ 1 ࡛⿕ᐖᮏᩘࡀ✺ฟࡋ࡚ከ࠸ᆅⅬ 1 ࡟╔┠ࡋࡓࠋᆅ
Ⅼ 1 ࡢ⌧ᆅ࡟࠾࠸࡚ࢥࢼࣛࡢ᭷↓ࢆ☜ㄆࡋࡓࠋᚚẊሙᕷࡢ 2020 ᖺ 9 ᭶ 9 ᪥ࠊ2019 ᖺ 10 ᭶ 10 ᪥ࡢ⾨ᫍ⏬ീࢆ⏝࠸ࡓࠋ࡟࠾ࡅࡿࢼࣛ㢮ࡢ⣚ⴥࡣ 10 ᭶୰᪪௨㝆࡛࠶ࡿࡓࡵࠊ8 ᭶

Jupyter Notebook ୖ࡛ Python ࢆ⏝࠸ࠊSentinel-2 ⏝࠿ࡽ 10 ᭶ึ᪪࡟ࠊⴥࡀኚⰍࡋࡓࢥࢼࣛࡣࢼࣛᯤࢀࡢྍAPI ࢆᐇ⾜ࡍࡿࡇ࡜࡛㛵ᚰ㡿ᇦࡢ⏬ീ᝟ሗࢆྲྀᚓࡋࡓࠋ⬟ᛶࡀ㧗࠸ࠋࢹ࣮ࢱࢆᆅᅗ࡛ྍど໬ࡍࡿ foliumࠊpandas ࡢᣑᙇᶵ⬟
࡛࠶ࡾ⾨ᫍ⏬ീࢆฎ⌮ࡍࡿ geopandasࠊ⾨ᫍ⏬ീ࡟࣐ࢫ⾲ᚚẊሙᕷ࡟࠾ࡅࡿࢼࣛᯤࢀ⿕ᐖᆅⅬ࡜ᮏᩘࢡฎ⌮➼ࢆ᪋ࡍ rasterio ➼ࡢࣛ࢖ࣈࣛࣜࢆ⏝࠸ࡓࠋᆅⅬ␒ྕඃ༨ᶞ✀⿕ᐖᮏᩘࢥࢼࣛ⣙ ࢥࢼࣛ⣙ ࢼࣛ㢮⣙ ࣂࣥࢻἼ㛗୰ᚰἼ㛗QPศゎ⬟Pࢥࢼࣛ⣙ %

%OXHࢥࢼࣛ⣙ %*UHHQࢥࢼࣛ

⣙ %

5HGࢥࢼࣛ⣙ %1,5ࢡࢾࢠ㸪࢝ࢩ࣡࢔࢝࢞ࢩ⣙ &RQWUROࢥࢼࣛ೺඲⾲

6HQWLQHO ⾨ᫍࠊᡴࡕୖࡆ≧ែ $ ࡢ⏬ീࢹ࣮ࢱ࡟㛵ࡍࡿࣂࣥࢻ᝟ሗ࡜ศゎ⬟>@ ⾨ᫍ⏬ീゎᯒ௒ᅇࡢ⾨ᫍ⏬ീࢹ࣮ࢱࡣࠊᆅ⾲㠃཯ᑕ⋡ࢹ࣮ࢱ࡟ᑐࡋ

ᚚẊሙᕷᙺᡤᥦ౪㈨ᩱ㸦 ᖺ㸧࠿ࡽ୍㒊ᢤ⢋࡚኱Ẽ⿵ṇࡉࢀࡓࡶࡢ࡛࠶ࡿࠋᐃࣂࣥࢻࡢ࠺ࡕࠊᆅୖ

ゎീᗘࡀ pixel ᙜࡾ 10m ࡛࠶ࡿྍど㟷ࠊྍど⥳ࠊྍど㉥ࠊ㏆㉥እࡢࢹ࣮ࢱࢆ⏝࠸ࡓࠋ⾨ᫍ⏬ീ࠿ࡽᑐ㇟࡜ࡍࡿ㡿ᇦࢆษࡾᢤࡃࡇ࡜࡛ࠊᑐ㇟㡿ᇦࡢ඲ࣆࢡࢭࣝࡀࡶࡘ್ࢆゎᯒ࡟⏝࠸ࡓࠋ
Controlࢼ ࣛᯤ ࢀ ࢆ ゎ ᯒࡍ ࡿ ࡟ ࠶ ࡓ ࡗ ࡚ࠊ ṇ つ ໬ ᳜⏕ ᣦ ᩘ
㸦NDVI㸧ࢆ⟬ฟࡋࡓࠋNDVI ࡣḟᘧ࡛⾲ࡉࢀࡿࠋ7ܰ‫ ܫܸܦ‬ൌ

612ᅗࡇࡇ࡛ NIR ࡣ㏆㉥እࠊR ࡣྍど㉥ࡢᆅ⾲㠃཯ᑕ⋡࡛࠶
8 34ܰ‫ ܴܫ‬െ ܴܰ‫ ܴܫ‬൅ ܴࡿࠋ㏆㉥እἼ㛗ࡣ᳜≀ࡢⴥࡢ⣽⬊ᵓ㐀࡟ࡼࡿ཯ᑕ⋡ࡀ኱5ᚚẊሙᕷ࡟࠾ࡅࡿࢼࣛᯤࢀ⿕ᐖᆅⅬࡁ࠸㡿ᇦ࡛࠶ࡾࠊ㉥Ἴ㛗ࡣⴥ࡟ྵࡲࢀࡿࢡࣟࣟࣇ࢕ࣝ࡟ࡼࡿ྾཰⋡ࡀ኱ࡁ࠸㡿ᇦ࡛࠶ࡿࡓࡵࠊNDVI ࡣᆅ⾲ୖ࡟᳜≀ࡀከ࠸࡯࡝኱ࡁ࠸್ࢆ♧ࡍ[7]ࠋ

2SHQ6WUHHW0DS ࡟ຍ➹ࡋࡓࠋ⾲  ࡢᆅⅬ␒ྕ࡜ྠࡌࠋ⤖ᯝ࡜⪃ᐹ⿕ᐖᆅⅬࡢ⾨ᫍ⏬ീྲྀᚓ࣮ࣜࣔࢺࢭࣥࢩࣥࢢ࡟ࡼࡿࢼࣛᯤࢀ᳨ฟࡢྍྰࢆㄪ࡭
ࡿࡓࡵ࡟ࠊᆅୖศゎ⬟ 10m ࡢ Sentinel-2[5]⾨ᫍ⏬ീࢆ⏝࠸ࡓࠋSentinel-2 ࡜ࡣࠊḢᕞᏱᐂᶵ㛵ࡀᡴࡕୖࡆࡓ⾨⾲ 3 ࡟ᆅⅬ 1 ࡜ Control ࡟࠾ࡅࡿ 2 ࣧᖺࡢ NDVI ⤫ィ㔞ࢆ♧ࡋࠊᅗ 2 ࠿ࡽᅗ 9 ࡟ᑐᛂࡍࡿሙᡤ࡜᫬ᮇ࡟࠾ࡅ
ࡿ True color ࡜ NDVI ⏬ീࢆ♧ࡋࡓࠋ
2020 ᖺࡢ␗࡞ࡿᆅⅬ࡛ẚ㍑ࡋࡓሙྜࠊᅗ 2 ࡣ᳃ᯘෆ⤖ᯝࢆ↓ൾ࡛බ㛤ࡋ࡚࠸ࡿࠋ

࡟ⲔⰍ㡿ᇦࡀࡳࡽࢀࡿࡀࠊᅗ 4 ࡣⲔⰍ㡿ᇦࡣࡳࡽࢀ࡞࠸ࠋ

Copernicus Open Access Hub ࢆ⏝࠸࡚ Sentinel-2 ⾨ᫍࠊࡇࢀࡽࡢࡇ࡜ࡣࠊᆅⅬ 1 ࡛ࡣ㏻ᖖࡢ⣚ⴥ࡟ࡼࡿⴥࡢኚⰍᡴࡕୖࡆ≧ែ 2A ࡢ⏬ീࢹ࣮ࢱࢆࢲ࣮࢘ࣥࣟࢻࡋࡓ[5]ࠋ࡛ࡣ࡞࠸ࡇ࡜ࢆ♧ࡋ࡚࠸ࡿࠋ2019 ᖺࡢ␗࡞ࡿᆅⅬ࡛ẚ㍑

ࣂࣥࢻᩘࡣ 13 ࠶ࡿࡀࠊᮏ◊✲࡛ࡣ⾲ 2 ࡟♧ࡋࡓ Blue,ࡋࡓሙྜࠊᅗ 6 ࡜ᅗ 8 ࡢ୧᪉࡛ⲔⰍ࠸㡿ᇦࡣࡳࡽࢀ࡞࠸ࠋ

ᫍࡢ୍ࡘ࡛ࠊほほ御殿場市における衛星画像を用いたナラ枯れ検出の予備的調査

ᅗ2ᆅⅬ 1㸪2020 ᖺ 9 ᭶ 9 ᪥, True color ⏬ീᅗ3ᆅⅬ 1㸪2020 ᖺ 9 ᭶ 9 ᪥, NDVI ⏬ീᅗ4Control㸪2020 ᖺ 9 ᭶ 9 ᪥, True color ⏬ീᅗ5Control㸪2020 ᖺ 9 ᭶ 9 ᪥, NDVI ⏬ീᅗ6ᆅⅬ 1㸪2019 ᖺ 10 ᭶ 10 ᪥, True color ⏬ീᅗ7ᅗ8ᅗ9ᆅⅬ 1㸪2019 ᖺ 10 ᭶ 10 ᪥, NDVI ⏬ീControl㸪2019 ᖺ 10 ᭶ 10 ᪥, True color ⏬ീControl㸪2019 ᖺ 10 ᭶ 10 ᪥, NDVI ⏬ീ910沼津工業高等専門学校研究報告

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ࡇࡢࡇ࡜ࡣࠊᆅⅬ 1 ࡛ࡣ 2020 ᖺࡢⴥࡢⲔⰍ࠸ኚⰍࡣࠊᫍ⏬ീ㸦Sentinel-2㸧ࢆ⏝࠸ࡓ NDVI ฼⏝ࡢྍ⬟ᛶࡀ♧㏻ᖖࡢ⣚ⴥ࡛ࡣ࡞࠸ࡇ࡜ࡀࢃ࠿ࡿࠋຍ࠼࡚ࠊᚚẊሙᕷࡢࡉࢀࡓࠋ⌧᫬Ⅼ࡛ࡣࢹ࣮ࢱᩘࡀᑡ࡞࠸ࡓࡵࠊ᭦࡞ࡿㄪᰝሗ࿌࠿ࡽࠊࡇࡢⲔⰍ࠸ኚⰍࡣࠊࢼࣛᯤࢀ࡟ࡼࡿࡶࡢ࡛࠶ࡀᚲせ࡛࠶ࡿࠋࡿࡇ࡜ࡀド᫂ࡉࢀࡓࠋㅰ㎡
⾲ 3 ᆅⅬ 1 ࡜ Control ࡟࠾ࡅࡿ 2020 ᖺ 9 ᭶ 9 ᪥࡜ᮏ◊✲ࢆ㐍ࡵࡿ࡟࠶ࡓࡾࠊᚚẊሙᕷᙺᡤࡼࡾ 2020 ᖺ2019 ᖺ 10 ᭶ 10 ᪥ࡢ NDVI ⤫ィ㔞ࡢᚚẊሙᕷ࡟࠾ࡅࡿࢼࣛᯤࢀ⿕ᐖࢹ࣮ࢱࢆࡈᥦ౪㡬ࡁࡲࡋࡓࠋࡇࡇ࡟グࡋ࡚ㅰពࢆ⾲ࡋࡲࡍࠋ⏬ീ᝟ሗ୰ኸ್ᖹᆒᶆ‽೫ᕪ

ᆅⅬ 

&RQWURO





[1]

ᆅⅬ 





[2]

&RQWURO

ཧ⪃ᩥ⊩
65(3), 2011, pp. 162-166.
ᯘ㔝ᗇ: ࢼࣛᯤࢀ⿕ᐖ, 㒔㐨ᗓ┴ูࢼࣛᯤࢀ⿕ᐖ㔞( ⿕ ᐖ ᮦ ✚ ) ࡢ ᥎ ⛣ ( ⥲ ᩘ ), ᯘ 㔝 ᗇ ࣍ ࣮ ࣒ ࣌ ࣮ ࢪ ,

https://www.rinya.maff.go.jp/j/hogo/higai/attach/pdf/naragare_R3-7.pdf, ཧ↷᪥: 2022-10-02.

ୖグ࡜ྠᵝ࡟ NDVI ⏬ീ࡟ࡘ࠸࡚㏙࡭ࡿࠋ2020 ᖺࡢ␗࡞ࡿᆅⅬ࡛ẚ㍑ࡋࡓሙྜࠊᅗ 3 ࡛ࡣ᳃ᯘෆ࡟ 0.2㹼0.4ࡢ㯤Ⰽ࠸ࣆࢡࢭࣝࡀከࡃࡳࡽࢀࠊ0.6㹼1.0 ࡢ⥳Ⰽࡢࣆࢡ[3]

ࡿᆅⅬ࡛ẚ㍑ࡋࡓሙྜࠊᅗ 7 ࡜ᅗ 9 ࡢ୧᪉࡜ࡶᅗ 5 ࡜ྠᵝ࡟ 0.6㹼1.0 ࡢ⥳Ⰽࡢࣆࢡࢭࣝ๭ྜࡀከ࠸ࠋࡇࡢࡇ࡜ࡣࠊ

[4]ࡉࢀࡿࠋ⾲ 3 ࡢ NDVI ⤫ィ㔞࡟࠾࠸࡚ࠊᆅⅬ 1࣭2020 ᖺ 9 ᭶2022-09-30.
[5]

[6]

ᮌୗࡽ[8]ࡣࠊ⾨ᫍ⏬ീ㸦WorldView-2㸧ࢆ⏝࠸ࡓゎᯒᡃࠎࡢணഛⓗㄪᰝ࡟࠾࠸࡚ࡶࠊࢼࣛᯤࢀ⠊ᅖࡢ᥎ᐃ࡟⾨

2B/2C/2D,b.html, ཧ↷᪥: 2022-09-30.
[7]஭ୖྜྷ㞝࡯࠿ (2019)㎰ᴗ࡜⎔ቃㄪᰝࡢࡓࡵࡢࣜࣔ
࣮ࢺࢭࣥࢩࣥࢢ࣭GIS࣭GPS ά⏝࢞࢖ࢻ, ᳃໭ฟ∧,pp152.

[8]ᮌୗ⠜ᙪ, ⚄㔝ᛅᗈ, ᭹㒊ಖ, ᒾ㛫ᇶᕭ, 㔠᐀↵,⣽ぢᏊ, 㕥ᮌ῟ྖ㸸භ⏥ᒣ⣔࡟࠾ࡅࡿࢼࣛᯤࢀࡢ⌧≧̿⿕ᐖᢕᥱ࡟࠾ࡅࡿ࣮ࣜࣔࢺࢭࣥࢩࣥࢢά⏝࠿ࡋࠊឤᰁᮌࡢᢳฟ࡟ࡣ⮳ࡽ࡞࠿ࡗࡓࠋྠᵝ࡟ࠊỌ஭ࡽࡀྍ⬟࡛࠶ࡗࡓࠋࡇࢀࡽࡢ◊✲࡜ྠᵝ࡟/

https://www.restec.or.jp/satellite/sentinel-2-a-2-

࡛ࠊNDVI ࡢᣦᶆ⏬ീ࠿ࡽᯤṚᮌࢆ㠃ⓗ࡟ᢳฟࡋࡓࠋࡋ[9]ࡶ⾨ᫍ⏬ീ㸦Sentinel-2㸧ࢆ⏝࠸࡚ࢼࣛᯤࢀ࡟ࡼࡿ୍᳜⯡㈈ᅋἲே࣮ࣜࣔࢺ࣭ࢭࣥࢩࣥࢢᢏ⾡ࢭࣥࢱ࣮,Sentinel-2A㔞࠿ࡽࡶ NDVI ࡣࠊࢼࣛᯤࢀᆅⅬ࡜೺඲࡞ᯘ࡜࡛ࡣ㐪࠸ࡀฟࡿࡇ࡜ࡀ♧ࡉࢀࡓࠋhttps://scihub.copernicus.eu/dhus/#/home,ཧ↷᪥: 2022-09-30.

ᖹᆒ࡜ẚ㍑ࡋ࡚ప࠸ࠋᶆ‽೫ᕪ࠿ࡽ NDVI ࡢࡤࡽࡘࡁࢆ᭶ 9 ᪥࡛᫂ࡽ࠿࡟ప࠸ࡇ࡜ࡀࢃ࠿ࡿࠋࡇࢀࡽ⾲ 3 ࡢ⤫ィEuropean Space Agency, Copernicus Open Access
Hub,9 ᪥ࡢ୰ኸ್࡜ᖹᆒ್ࡣࠊ௚ࡢ㸱ࡘࡢሙᡤ࣭ᖺࡢ୰ኸ್ࠊ
⪃៖ࡋ࡚ࡶࠊୖグࡢ୰ኸ್࡜ᖹᆒࡀࠊᆅⅬ 1࣭2020 ᖺ 9⎔ ቃ ┬ , ⮬ ↛ ⎔ ቃ ㄪ ᰝ Web-GIS, ᳜ ⏕ ㄪ ᰝ ,http://gis.biodic.go.jp/webgis/index.html, ཧ↷᪥:

ᆅⅬ 1 ࡟࠾ࡅࡿ 2020 ᖺࡢ 0.2㹼0.4 ࡢ㯤Ⰽ࠸ࣆࢡࢭࣝࡣࠊࢼࣛᯤࢀ࡟ࡼࡿࡶࡢ࡛࠶ࡿࡇ࡜ࡀ᥎኱஭ᚭ㸸ࢶ࢟ࣀ࣡ࢢ࣐ࡢ⏕ែ࡜ศᕸᣑ኱, ᳃ᯘ㔝⏕ື≀◊✲఍ㄅ, 39, 2014, pp. 21-24.

ࢭࣝ๭ྜࡀᅗ 5 ࡜ẚ㍑ࡋ࡚ᑡ࡞࠸ࠋ୍᪉ࠊ2019 ᖺࡢ␗࡞⏕ኚ໬ࡢほ㯮⏣៞Ꮚ㸸ࢼࣛᯤࢀࡢⓎ⏕ཎᅉ࡜ᑐ⟇, ᳜≀㜵␿,࡬ࡢྲྀ⤌ࡳ̿, ◁㜵Ꮫ఍ㄅ, 66(1), 2013, pp. 58-61.
[9]Ọ஭ಙ, 㐲⸨ᣅὒ, ୗ⏣ᙲᏊ㸸SENTINEL-2A/B ⾨ᫍ࡟ࡼࡿ⮬↛ᩍ⫱ᅬࡢࢼࣛᯤࢀほ࿌, 53, 2021, pp. 35-38.

, ⮬↛ᩍ⫱ሗ