{"id":7742,"date":"2020-11-05T09:26:54","date_gmt":"2020-11-05T09:26:54","guid":{"rendered":"https:\/\/orca.rs\/?p=7742"},"modified":"2020-11-30T11:03:11","modified_gmt":"2020-11-30T11:03:11","slug":"biljke-prilagodjavanje-hladnom-vremenu","status":"publish","type":"post","link":"https:\/\/orca.rs\/en\/biljke-prilagodjavanje-hladnom-vremenu\/","title":{"rendered":"Kako se biljke prilago\u0111avaju hladnijem vremenu"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"background-color: rgba(255,255,255,0);background-position: center center;background-repeat: no-repeat;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-bottom: 0px;margin-top: 0px;border-width: 0px 0px 0px 0px;border-color:#eae9e9;border-style:solid;\" ><div class=\"fusion-builder-row fusion-row\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-one-full fusion-column-first fusion-column-last\" style=\"margin-top:0px;margin-bottom:20px;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div class=\"fusion-text fusion-text-1\"><p style=\"text-align: justify;\">Ne pripremaju se samo \u017eivotinje svake godine za zimu. Biljke su zauzete tokom celog leta \u2212 rastu, prave i \u010duvaju hranu. Za razliku od \u017eivotinja, biljke nemaju mogu\u0107nost migracije ili hibernacije. <strong>Biljke moraju da se prilagode uslovima oko sebe.<\/strong> Drve\u0107e ima neverovatnu sposobnost da oseti promene vremena. Ono po\u010dinje da se priprema \u010dim prepozna znake da dolazi zima. Listopadno drve\u0107e se priprema za mirovanje, koje je poput hibernacije kod \u017eivotinja, tako \u0161to usporava rast i odbacuje li\u0161\u0107e. Drve\u0107e tako\u0111e \u0161titi svoje \u0107elije od niskih temperatura tako \u0161to preme\u0161ta vodu iz unutra\u0161njosti \u0107elije u male prostore izvan \u0107elija, \u0161to spre\u010dava da se one smrznu.<\/p>\n<p style=\"text-align: justify;\">Jedna od stvari koja biljkama najte\u017ea pada tokom zime jeste to \u0161to se voda ponekad mo\u017ee smrznuti, a biljke ne mogu da prenose led kroz svoje korenje. Listopadne biljke ovaj nedostatak vode prevazilaze tako \u0161to im opada li\u0161\u0107e svake jeseni. Sa li\u0161ca voda isparava iz biljaka. Nakon odbacivanja li\u0161\u0107a, listopadne biljke ulaze u fazu mirovanja. \u010cetinari su tako\u0111e adaptirani da spre\u010davaju gubitak vode. Njihovi listovi, koji izgledaju poput iglica, imaju debele, vo\u0161tane prevlake koje smanjuju gubitak vode sa povr\u0161ine. Neke zimzelene biljke imaju posebne mehanizme adaptacije, poput kapka koji automatski zatvara pojedina\u010dne \u0107elije koje su zamrznute. Na ovaj na\u010din se spre\u010dava zamrzavanje okolnih \u0107elija.<\/p>\n<h2 style=\"text-align: justify;\"><span style=\"color: #ff6600;\">Adaptacija<\/span><\/h2>\n<p style=\"text-align: justify;\">Listopadne biljke re\u0161avaju nedostatak vode tako \u0161to odbacuju li\u0161\u0107e sa kog voda isparava u vazduh. Tokom hladnih zimskih meseci ve\u0107ini listopadnih biljaka opadne li\u0161ce i one ulaze u stanje mirovanja. Zimzelene biljke zadr\u017eavaju li\u0161\u0107e, ali njihovo li\u0161\u0107e i iglice imaju debele, vo\u0161tane obloge kako bi smanjile gubitak vode.<\/p>\n<p style=\"text-align: justify;\">U podru\u010djima poput Arktika gde je sneg \u010dest i gde tokom cele godine mo\u017ee biti hladno vreme, biljke su se adaptirale na druge na\u010dine. Drve\u0107e mo\u017ee rasti blizu zemlje u oblicima koji im poma\u017eu da lak\u0161e odbacuju te\u017eak sneg. Biljke mogu i da zadr\u017ee mrtvo li\u0161\u0107e zbog izolacije ili da koriste duboki sneg poput pokriva\u010da kao za\u0161titu od hladno\u0107e. Neke zimzelene biljke tako\u0111e imaju poseban kapak u svojim \u0107elijama. On automatski zatvara pojedina\u010dne smrznute \u0107elije da bi spre\u010dio lan\u010danu reakciju smrzavanja.<\/p>\n<h2 style=\"text-align: justify;\"><span style=\"color: #ff6600;\">Me\u0111usobni uticaji<\/span><\/h2>\n<p style=\"text-align: justify;\">Ba\u0161 kao \u0161to sneg ima mo\u0107 da oblikuje biljke, biljke ponekad mogu uticati na sneg. \u0160umska vegetacija uti\u010de na to koliko sneg dopire do tla i koliko se on brzo topi. Sneg i odre\u0111eni prostorni obrasci vegetacije me\u0111usobno se dopunjuju. U blizini linije drve\u0107a, gde \u0161uma ustupa mesto tundri, drve\u0107e mo\u017ee rasti u uskim nizovima. Na otvorenim prostorima izme\u0111u drve\u0107a sneg \u010desto stvara nanose. Ovi nizovi drve\u0107a imaju funkciju sne\u017enih ograda. Tokom leta duboki sneg skra\u0107uje vegetacioni period, ometaju\u0107i uspostavljanje i rast sadnica. Me\u0111utim, kako leto promi\u010de, nanosi snega koji se topi pove\u0107avaju koli\u010dinu vlage u zemlji\u0161tu u blizini nanosa, i tako povoljno uti\u010du na rast biljaka.<\/p>\n<p>Prevela: Ana Stijelja<\/p>\n<\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":3,"featured_media":7848,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[40],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kako se biljke prilago\u0111avaju hladnijem vremenu - ORCA<\/title>\n<meta name=\"description\" content=\"Ne pripremaju se samo \u017eivotinje svake godine za zimu. Biljke su zauzete tokom leta \u2212 prave i \u010duvaju hranu. 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