{"id":1568,"date":"2025-09-19T09:15:36","date_gmt":"2025-09-19T07:15:36","guid":{"rendered":"https:\/\/europe-land.eu\/?p=1568"},"modified":"2025-09-23T10:24:26","modified_gmt":"2025-09-23T08:24:26","slug":"new-europe-land-study-shows-drones-can-detect-bark-beetle-outbreaks-weeks-before-visible-damage","status":"publish","type":"post","link":"https:\/\/europe-land.eu\/et\/news\/new-europe-land-study-shows-drones-can-detect-bark-beetle-outbreaks-weeks-before-visible-damage\/","title":{"rendered":"Euroopa-maa teadlase uus uuring n\u00e4itab, et droonid suudavad tuvastada puukooremardika puhanguid n\u00e4dalaid enne n\u00e4htavaid kahjustusi."},"content":{"rendered":"<p>Kooremardikate puhangud on viimastel aastatel laastanud kuusepuud kogu Kesk-Euroopas, mille p\u00f5hjuseks on kuumemad ja kuivemad tingimused ning stressis olevad puistud. Kui n\u00e4htavad s\u00fcmptomid ilmnevad, on sageli liiga hilja t\u00f5husaks sekkumiseks. Aga mis oleks, kui me suudaksime nakatumise varem, enne v\u00e4rvimuutust, lehestumist v\u00f5i surma avastada?<\/p>\n\n\n\n<p>Euroopa-L\u00e4ndi teadlase dr Lucie Kupkova ja tema meeskonna uus eksperdihinnanguga uuring uurib just seda k\u00fcsimust. Avaldatud ajakirjas\u00a0<em>\u00d6koloogilised n\u00e4itajad<\/em>, Artiklis uuritakse, kas mehitamata \u00f5hus\u00f5idukite (UAV), mida sageli nimetatakse droonideks, h\u00fcperspektraalsed kujutised v\u00f5imaldavad tuvastada m\u00e4rke puukooremardika (Ips typographus) nakatumisest \u201crohelises faasis\u201d, kui puud n\u00e4ivad palja silmaga veel terved.<\/p>\n\n\n\n<p><strong>Uuring<\/strong><\/p>\n\n\n\n<p>Uurimisr\u00fchm viis 2022. aasta vegetatsiooniperioodi jooksul l\u00e4bi \u00fcheksa UAV-lendu Krkono\u0161e rahvuspargis (T\u0161ehhi) asuva kuuse monokultuuri kohal, j\u00e4\u00e4dvustades h\u00fcperspektraalseid andmeid 3 cm eraldusv\u00f5imega. Nad j\u00e4lgisid t\u00e4helepanelikult 23 nakatunud ja 23 tervet puud, kasutades p\u00f5ldtunnustamist, termilist modelleerimist ja taimestikuindikaatoreid, et j\u00e4lgida nakatumise ajaj\u00e4rge.<\/p>\n\n\n\n<p>Kasutades statistilisi meetodeid, sealhulgas Jeffries-Matusita distantsi, sarnasuste anal\u00fc\u00fcsi, Wilcoxoni ristsummateste ja erinevuste erinevust, n\u00e4itas uuring, et:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nakatumine oli tuvastatav umbes kolm n\u00e4dalat p\u00e4rast esialgset r\u00fcnnakut, kuid kaks n\u00e4dalat enne n\u00e4htavat krooni v\u00e4rvimuutust.<\/li>\n\n\n\n<li>K\u00f5ige informatiivsemad lainepikkused olid punase serva (692-706 nm) ja punase (626-644 nm) piirkonnas - tunduvalt enne seda, kui muutused olid n\u00e4htavad standardsetel RGB-kujutistel.<\/li>\n\n\n\n<li>Rohelise etapi jagamine kolmeks alafaasiks aitas t\u00e4psustada ajakava ja tuvastamisv\u00f5imalusi:\n<ul class=\"wp-block-list\">\n<li>G-HS (varjatud s\u00fcmptomid, varajane koore puurimine),<\/li>\n\n\n\n<li>G-BS (n\u00e4htavad koore s\u00fcmptomid, roheline kroon),<\/li>\n\n\n\n<li>G-YS (rohekaskollane staadium, varajane krooni stress).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>M\u00f5ju metsamajandusele<\/strong><\/p>\n\n\n\n<p>Nakatumise avastamine varases rohelises staadiumis on t\u00f5husaks t\u00f5rjeks h\u00e4davajalik, v\u00f5imaldades sanitaarseid raiet\u00f6id ja sihip\u00e4rast reageerimist enne haiguspuhangute eskaleerumist. Praegune avastamine toimub sageli liiga hilja, kui kroonid kolletavad v\u00f5i surevad, v\u00f5ivad mardikad olla juba laiali l\u00e4inud.<\/p>\n\n\n\n<p>Kombineerides suure eraldusv\u00f5imega droonipilte h\u00fcperspektraalse anal\u00fc\u00fcsi ja aegridade andmetega, pakub see meetod t\u00e4psemaid ja \u00f5igeaegsemaid vahendeid riigiasutustele ja metsamajandajatele, kes tegelevad kliimaga seotud kahjurite puhangutega.<\/p>\n\n\n\n<p><strong>Lisateave<\/strong><\/p>\n\n\n\n<p>Loe kogu artiklit:<br><a rel=\"noreferrer noopener\" target=\"_blank\" href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1470160X2500799X\">https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1470160X2500799X<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Bark beetle outbreaks have devastated spruce forests across Central Europe in recent years, driven by hotter, drier conditions and stressed tree stands. Once visible symptoms&hellip;<\/p>","protected":false},"author":6,"featured_media":1564,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1568","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"featured_image_url":{"thumbnail":"https:\/\/europe-land.eu\/wp-content\/uploads\/1-s2.0-S1470160X2500799X-gr1-150x150.jpg","medium":"https:\/\/europe-land.eu\/wp-content\/uploads\/1-s2.0-S1470160X2500799X-gr1-300x285.jpg","medium_large":"https:\/\/europe-land.eu\/wp-content\/uploads\/1-s2.0-S1470160X2500799X-gr1.jpg","large":"https:\/\/europe-land.eu\/wp-content\/uploads\/1-s2.0-S1470160X2500799X-gr1.jpg","1536x1536":"https:\/\/europe-land.eu\/wp-content\/uploads\/1-s2.0-S1470160X2500799X-gr1.jpg","2048x2048":"https:\/\/europe-land.eu\/wp-content\/uploads\/1-s2.0-S1470160X2500799X-gr1.jpg","trp-custom-language-flag":"https:\/\/europe-land.eu\/wp-content\/uploads\/1-s2.0-S1470160X2500799X-gr1-13x12.jpg"},"post_author":"Megan Curling","assigned_categories":"News","featured_image_src":"https:\/\/europe-land.eu\/wp-content\/uploads\/1-s2.0-S1470160X2500799X-gr1.jpg","author_info":{"display_name":"Megan Curling","author_link":"https:\/\/europe-land.eu\/et\/participant\/mcurling\/"},"_links":{"self":[{"href":"https:\/\/europe-land.eu\/et\/wp-json\/wp\/v2\/posts\/1568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/europe-land.eu\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/europe-land.eu\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/europe-land.eu\/et\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/europe-land.eu\/et\/wp-json\/wp\/v2\/comments?post=1568"}],"version-history":[{"count":3,"href":"https:\/\/europe-land.eu\/et\/wp-json\/wp\/v2\/posts\/1568\/revisions"}],"predecessor-version":[{"id":1571,"href":"https:\/\/europe-land.eu\/et\/wp-json\/wp\/v2\/posts\/1568\/revisions\/1571"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/europe-land.eu\/et\/wp-json\/wp\/v2\/media\/1564"}],"wp:attachment":[{"href":"https:\/\/europe-land.eu\/et\/wp-json\/wp\/v2\/media?parent=1568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/europe-land.eu\/et\/wp-json\/wp\/v2\/categories?post=1568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/europe-land.eu\/et\/wp-json\/wp\/v2\/tags?post=1568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}