{"id":61,"date":"2014-02-09T20:28:41","date_gmt":"2014-02-09T19:28:41","guid":{"rendered":"http:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/?page_id=61"},"modified":"2017-02-01T15:33:02","modified_gmt":"2017-02-01T14:33:02","slug":"vymladkove-polykormony","status":"publish","type":"page","link":"https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/vymladkove-polykormony\/","title":{"rendered":"V\u00fdmladkov\u00e9 polykormony"},"content":{"rendered":"<p style=\"text-align: justify;\">V\u00fdskyt star\u00fdch v\u00fdmladkov\u00fdch polykormon\u016f je rozhoduj\u00edc\u00edm krit\u00e9riem pro vymezen\u00ed lokalit starobyl\u00fdch pa\u0159ezin a pro hodnocen\u00ed jejich v\u00fdznamu. Schopnost vegetativn\u00ed regenerace je d\u016fle\u017eitou sou\u010d\u00e1st\u00ed dendrologick\u00e9 charakteristiky d\u0159evin (\u00daradn\u00ed\u010dek et al., 2009).<\/p>\n<figure id=\"attachment_793\" aria-describedby=\"caption-attachment-793\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obal-zadn\u00ed-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-793 size-large\" src=\"http:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obal-zadn\u00ed-3-1024x768.jpg\" width=\"700\" height=\"525\" srcset=\"https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obal-zadn\u00ed-3-1024x768.jpg 1024w, https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obal-zadn\u00ed-3-300x225.jpg 300w, https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obal-zadn\u00ed-3-768x576.jpg 768w, https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obal-zadn\u00ed-3-1000x750.jpg 1000w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><figcaption id=\"caption-attachment-793\" class=\"wp-caption-text\">Starobyl\u00fd v\u00fdmladkov\u00fd polykormon habru v Lesonick\u00e9m lese<\/figcaption><\/figure>\n<p style=\"text-align: justify;\">Existence v\u00fdmladkov\u00fdch les\u016f je zalo\u017eena na schopnosti d\u0159evin obnovit se ze sp\u00edc\u00edch nebo adventivn\u00edch pupen\u016f na pa\u0159ezech nebo na ko\u0159enech. Schopnost tvo\u0159it pa\u0159ezov\u00e9 nebo ko\u0159enov\u00e9 v\u00fdmladky je u jednotliv\u00fdch druh\u016f d\u0159evin velmi odli\u0161n\u00e1. Z na\u0161ich stromovit\u00fdch d\u0159evin maj\u00ed velmi dobrou pa\u0159ezovou v\u00fdmladnost habr obecn\u00fd (<i>Carpinus betulus<\/i>), jilm habrolist\u00fd (<i>Ulmus minor<\/i>), l\u00edpa srd\u010dit\u00e1 (<i>Tilia cordata<\/i>) i l\u00edpa velkolist\u00e1 (<i>T. platyphyllos<\/i>), ol\u0161e lepkav\u00e1 (<i>Alnus glutinosa<\/i>) a v\u0161echny druhy vrb (<i>Salix<\/i> spp.). Dobrou pa\u0159ezovou v\u00fdmladnost\u00ed se vyzna\u010duj\u00ed v\u0161echny druhy dub\u016f (<i>Quercus<\/i> spp.), javor babyka (<i>Acer campestre<\/i>), jilm horsk\u00fd (<i>Ulmus glabra<\/i>), ol\u0161e \u0161ed\u00e1 (<i>Alnus incana<\/i>), je\u0159\u00e1b pta\u010d\u00ed (<i>Sorbus aucuparia<\/i>), topol \u010dern\u00fd (<i>Populus nigra<\/i>) a topol b\u00edl\u00fd (<i>P. alba<\/i>). K druh\u016fm s malou pa\u0159ezovou v\u00fdmladnost\u00ed jsou \u0159azeny jasan ztepil\u00fd (<i>Fraxinus excelsior<\/i>), javor klen (<i>Acer pseudoplatanus<\/i>) a javor ml\u00e9\u010d (<i>A.\u00a0platanoides<\/i>) a topol osika (<i>Populus tremula<\/i>). Nepatrnou pa\u0159ezovou v\u00fdmladnost maj\u00ed v\u00a0podm\u00ednk\u00e1ch \u010cR buk lesn\u00ed (<i>Fagus sylvatica<\/i>) a b\u0159\u00edza b\u011blokor\u00e1 (<i>Betula pendula<\/i>). Velmi dobrou ko\u0159enovou v\u00fdmladnost\u00ed se vyzna\u010duj\u00ed p\u0159edev\u0161\u00edm topol osika a topol b\u00edl\u00fd. Schopnost tvo\u0159it pa\u0159ezov\u00e9 v\u00fdmladky ub\u00fdv\u00e1 s v\u011bkem, nejbohat\u0161\u00ed a nejsiln\u011bj\u0161\u00ed v\u00fdmladky se tvo\u0159\u00ed u mlad\u00fdch strom\u016f, v\u00fdmladnost ub\u00fdv\u00e1 po zpomalen\u00ed v\u00fd\u0161kov\u00e9ho r\u016fstu, zhruba ve 40 letech, z\u00e1vis\u00ed tak\u00e9 na\u00a0v\u00fdmladnosti pa\u0159ez\u016f. Velmi dlouh\u00e9 trv\u00e1n\u00ed v\u00fdmladnosti maj\u00ed duby, dlouh\u00e9 trv\u00e1n\u00ed v\u00fdmladnosti maj\u00ed habr, jilm habrolist\u00fd a jilm drsn\u00fd, l\u00edpy a vrby, st\u0159edn\u00ed trv\u00e1n\u00ed javor babyka, ol\u0161e lepkav\u00e1, je\u0159\u00e1b pta\u010d\u00ed a\u00a0topoly. Velmi kr\u00e1tk\u00fdm trv\u00e1n\u00edm v\u00fdmladnosti se vyzna\u010duj\u00ed buk lesn\u00ed, jasan ztepil\u00fd, javor ml\u00e9\u010d, javor klen, ol\u0161e \u0161ed\u00e1 a b\u0159\u00edza. Pa\u0159ezov\u00e9 v\u00fdmladky rostou zpo\u010d\u00e1tku mnohem rychleji ne\u017e generativn\u011b vznikl\u00e9 semen\u00e1\u010dky d\u0159evin, nebo\u0165 mohou vyu\u017e\u00edt existuj\u00edc\u00ed ko\u0159enov\u00fd syst\u00e9m a odeb\u00edrat tak z pa\u0159ez\u016f zna\u010dn\u00e9 mno\u017estv\u00ed l\u00e1tek. Tento n\u00e1skok se vyrovn\u00e1v\u00e1 a\u017e po n\u011bkolika desetilet\u00edch (Svoboda 1952).<\/p>\n<figure id=\"attachment_792\" aria-describedby=\"caption-attachment-792\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obr.-4.1.9.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-792 size-large\" src=\"http:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obr.-4.1.9-1024x768.jpg\" width=\"700\" height=\"525\" srcset=\"https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obr.-4.1.9-1024x768.jpg 1024w, https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obr.-4.1.9-300x225.jpg 300w, https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obr.-4.1.9-768x576.jpg 768w, https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obr.-4.1.9-1000x750.jpg 1000w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><figcaption id=\"caption-attachment-792\" class=\"wp-caption-text\">Polykormon jilmu horsk\u00e9ho se 17 v\u00fdmladky<\/figcaption><\/figure>\n<p style=\"text-align: justify;\">V\u00fdmladkov\u00e9 polykormony vznikaj\u00ed vegetativn\u00ed regenerac\u00ed d\u0159evin na pa\u0159ezech a pa\u0159ezov\u00fdch hlav\u00e1ch. Pa\u0159ezov\u00e9 hlavy se vyv\u00edjej\u00ed z\u00e1valy na b\u00e1zi kmene p\u0159i dlouhotrvaj\u00edc\u00edm v\u00fdmladkov\u00e9m hospoda\u0159en\u00ed, jejich v\u011bk m\u016f\u017ee dosahovat i n\u011bkolik set let. Star\u00e9 v\u00fdmladkov\u00e9 pa\u0159ezy a pa\u0159ezov\u00e9 hlavy v lokalit\u00e1ch starobyl\u00e9ho v\u00fdmladkov\u00e9ho lesa jsou cenn\u00fdmi doklady p\u016fvodn\u00edho genofondu listnat\u00fdch d\u0159evin z obdob\u00ed p\u0159ed vznikem racion\u00e1ln\u00edho lesn\u00edho hospod\u00e1\u0159stv\u00ed, spojen\u00e9ho s p\u0159enosem semen \u010dasto na velk\u00e9 vzd\u00e1lenosti. V\u011bk porost\u016f v\u00fdmladkov\u00e9ho p\u016fvodu b\u00fdv\u00e1 v lesnick\u00fdch pramenech ur\u010dov\u00e1n na z\u00e1klad\u011b st\u00e1\u0159\u00ed v\u00fdmladkov\u00fdch kmen\u016f. V\u00fdmladkov\u00e9 polykormony ve starobyl\u00fdch les\u00edch jsou ov\u0161em mnohon\u00e1sobn\u011b star\u0161\u00ed, jejich v\u011bk se m\u016f\u017ee pohybovat v \u0159\u00e1du stalet\u00ed. V\u00a0neprav\u00fdch kmenovin\u00e1ch v p\u0159\u00edrodn\u00ed rezervaci \u0160estajovick\u00e1 str\u00e1\u0148, kde byl v\u011bk lesn\u00edch porost\u016f v lesn\u00edm hospod\u00e1\u0159sk\u00e9m pl\u00e1nu ud\u00e1v\u00e1n 55 a 66 let, bylo na zkusn\u00fdch ploch\u00e1ch zji\u0161t\u011bno st\u00e1\u0159\u00ed v\u00fdmladkov\u00fdch pa\u0159ez\u016f a\u017e 158 let (Bu\u010dek 2009).<\/p>\n<figure id=\"attachment_355\" aria-describedby=\"caption-attachment-355\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2014\/02\/P1010314.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-355 size-large\" src=\"http:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2014\/02\/P1010314-1024x768.jpg\" width=\"700\" height=\"525\" srcset=\"https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2014\/02\/P1010314-1024x768.jpg 1024w, https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2014\/02\/P1010314-300x225.jpg 300w, https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2014\/02\/P1010314-1000x750.jpg 1000w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><figcaption id=\"caption-attachment-355\" class=\"wp-caption-text\">Star\u00fd dubov\u00fd polykormon se t\u0159emi v\u00fdmladky<\/figcaption><\/figure>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\">P\u0159i pr\u016fzkumu lokalit starobyl\u00fdch les\u016f zji\u0161\u0165ujeme z\u00e1kladn\u00ed dendrometrick\u00e9 \u00fadaje:<\/p>\n<p style=\"text-align: justify;\">&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 druh d\u0159eviny a po\u010dty kmen\u016f v\u00a0polykormonu,<\/p>\n<p style=\"text-align: justify;\">&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 pr\u016fm\u011br jednotliv\u00fdch kmen\u016f ve v\u00fd\u0161i \u00a01,3 m nad zem\u00ed (v cm), a to kolmo na osu kmene,<\/p>\n<p style=\"text-align: justify;\">&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 v\u00fd\u0161ku kmen\u016f (v m),<\/p>\n<p style=\"text-align: justify;\">&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 celkov\u00fd obvod pa\u0159ezov\u00e9 \u010d\u00e1sti u zem\u011b (max. 5 cm nad povrchem, v m).<\/p>\n<p style=\"text-align: left;\"><!--?xml:namespace prefix = \"v\" ns = \"urn:schemas-microsoft-com:vml\" \/--><\/p>\n<p><!--?xml:namespace prefix = \"o\" ns = \"urn:schemas-microsoft-com:office:office\" \/--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u00fdskyt star\u00fdch v\u00fdmladkov\u00fdch polykormon\u016f je rozhoduj\u00edc\u00edm krit\u00e9riem pro vymezen\u00ed lokalit starobyl\u00fdch pa\u0159ezin a pro hodnocen\u00ed jejich v\u00fdznamu. Schopnost vegetativn\u00ed regenerace je d\u016fle\u017eitou sou\u010d\u00e1st\u00ed dendrologick\u00e9 charakteristiky d\u0159evin (\u00daradn\u00ed\u010dek et al., 2009). Existence v\u00fdmladkov\u00fdch les\u016f je zalo\u017eena na schopnosti d\u0159evin obnovit se ze sp\u00edc\u00edch nebo adventivn\u00edch pupen\u016f na pa\u0159ezech nebo na ko\u0159enech. Schopnost tvo\u0159it pa\u0159ezov\u00e9 nebo ko\u0159enov\u00e9 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/vymladkove-polykormony\/\" class=\"more-link\">Pokra\u010dovat ve \u010dten\u00ed<span class=\"screen-reader-text\"> &#8222;V\u00fdmladkov\u00e9 polykormony&#8220;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-61","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>V\u00fdmladkov\u00e9 polykormony - Starobyl\u00e9 v\u00fdmladkov\u00e9 lesy, jejich v\u00fdznam a udr\u017eitelnost v\u00a0kulturn\u00ed krajin\u011b<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/vymladkove-polykormony\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"V\u00fdmladkov\u00e9 polykormony - Starobyl\u00e9 v\u00fdmladkov\u00e9 lesy, jejich v\u00fdznam a udr\u017eitelnost v\u00a0kulturn\u00ed krajin\u011b\" \/>\n<meta property=\"og:description\" content=\"V\u00fdskyt star\u00fdch v\u00fdmladkov\u00fdch polykormon\u016f je rozhoduj\u00edc\u00edm krit\u00e9riem pro vymezen\u00ed lokalit starobyl\u00fdch pa\u0159ezin a pro hodnocen\u00ed jejich v\u00fdznamu. Schopnost vegetativn\u00ed regenerace je d\u016fle\u017eitou sou\u010d\u00e1st\u00ed dendrologick\u00e9 charakteristiky d\u0159evin (\u00daradn\u00ed\u010dek et al., 2009). Existence v\u00fdmladkov\u00fdch les\u016f je zalo\u017eena na schopnosti d\u0159evin obnovit se ze sp\u00edc\u00edch nebo adventivn\u00edch pupen\u016f na pa\u0159ezech nebo na ko\u0159enech. Schopnost tvo\u0159it pa\u0159ezov\u00e9 nebo ko\u0159enov\u00e9 &hellip; Pokra\u010dovat ve \u010dten\u00ed &quot;V\u00fdmladkov\u00e9 polykormony&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/vymladkove-polykormony\/\" \/>\n<meta property=\"og:site_name\" content=\"Starobyl\u00e9 v\u00fdmladkov\u00e9 lesy, jejich v\u00fdznam a udr\u017eitelnost v\u00a0kulturn\u00ed krajin\u011b\" \/>\n<meta property=\"article:modified_time\" content=\"2017-02-01T14:33:02+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/wp-content\/uploads\/2017\/02\/Obr.-4.1.9-1024x768.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Odhadovan\u00e1 doba \u010dten\u00ed\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/vymladkove-polykormony\\\/\",\"url\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/vymladkove-polykormony\\\/\",\"name\":\"V\u00fdmladkov\u00e9 polykormony - Starobyl\u00e9 v\u00fdmladkov\u00e9 lesy, jejich v\u00fdznam a udr\u017eitelnost v\u00a0kulturn\u00ed krajin\u011b\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/vymladkove-polykormony\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/vymladkove-polykormony\\\/#primaryimage\"},\"thumbnailUrl\":\"http:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/wp-content\\\/uploads\\\/2017\\\/02\\\/Obr.-4.1.9-1024x768.jpg\",\"datePublished\":\"2014-02-09T19:28:41+00:00\",\"dateModified\":\"2017-02-01T14:33:02+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/vymladkove-polykormony\\\/#breadcrumb\"},\"inLanguage\":\"cs\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/vymladkove-polykormony\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"cs\",\"@id\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/vymladkove-polykormony\\\/#primaryimage\",\"url\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/wp-content\\\/uploads\\\/2017\\\/02\\\/Obr.-4.1.9.jpg\",\"contentUrl\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/wp-content\\\/uploads\\\/2017\\\/02\\\/Obr.-4.1.9.jpg\",\"width\":5184,\"height\":3888,\"caption\":\"Polykormon jilmu horsk\u00e9ho se 17 v\u00fdmladky\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/vymladkove-polykormony\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\u016f\",\"item\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"V\u00fdmladkov\u00e9 polykormony\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/#website\",\"url\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/\",\"name\":\"Starobyl\u00e9 v\u00fdmladkov\u00e9 lesy, jejich v\u00fdznam a udr\u017eitelnost v\u00a0kulturn\u00ed krajin\u011b\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/fraxinus.mendelu.cz\\\/vymladkovelesy\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"cs\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"V\u00fdmladkov\u00e9 polykormony - Starobyl\u00e9 v\u00fdmladkov\u00e9 lesy, jejich v\u00fdznam a udr\u017eitelnost v\u00a0kulturn\u00ed krajin\u011b","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/fraxinus.mendelu.cz\/vymladkovelesy\/vymladkove-polykormony\/","og_locale":"cs_CZ","og_type":"article","og_title":"V\u00fdmladkov\u00e9 polykormony - Starobyl\u00e9 v\u00fdmladkov\u00e9 lesy, jejich v\u00fdznam a udr\u017eitelnost v\u00a0kulturn\u00ed krajin\u011b","og_description":"V\u00fdskyt star\u00fdch v\u00fdmladkov\u00fdch polykormon\u016f je rozhoduj\u00edc\u00edm krit\u00e9riem pro vymezen\u00ed lokalit starobyl\u00fdch pa\u0159ezin a pro hodnocen\u00ed jejich v\u00fdznamu. 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