{"id":7599,"date":"2025-07-11T14:54:58","date_gmt":"2025-07-11T13:54:58","guid":{"rendered":"https:\/\/www.clwydianrangeanddeevalleyaonb.org.uk\/article\/light-pollution\/"},"modified":"2025-08-26T13:21:07","modified_gmt":"2025-08-26T12:21:07","slug":"light-pollution","status":"publish","type":"article","link":"https:\/\/www.clwydianrangeanddeevalleyaonb.org.uk\/cy\/article\/light-pollution\/","title":{"rendered":"Llygredd Golau"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"light-pollution-how-can-you-help\">Llygredd Golau \u2013 Sut allch chi helpu?<\/h2>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"672\" height=\"480\" src=\"https:\/\/www.clwydianrangeanddeevalleyaonb.org.uk\/wp-content\/uploads\/2025\/07\/Castell-Dinas-Bran-milkyway-1.jpg\" alt=\"Dark sky over Dinas Bran\" class=\"wp-image-2682\" srcset=\"https:\/\/www.clwydianrangeanddeevalleyaonb.org.uk\/wp-content\/uploads\/2025\/07\/Castell-Dinas-Bran-milkyway-1.jpg 672w, https:\/\/www.clwydianrangeanddeevalleyaonb.org.uk\/wp-content\/uploads\/2025\/07\/Castell-Dinas-Bran-milkyway-1-300x214.jpg 300w\" sizes=\"auto, (max-width: 672px) 100vw, 672px\" \/><\/figure>\n\n\n\n<p>Gall olygu<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Amharu ar batrwm cysgu oherwydd fod golau\u2019n treiddio i mewn i gartrefi. Fel bodau dynol rydym yn dilyn rhythm circadaidd (ein cloc biolegol sy\u2019n cael ei reoli gan y gylchred dydd-nos). Gall gormod o olau artiffisial yn ystod y nos darfu ar y gylchred honno gan ei gwneud yn anodd inni gysgu\u2019n dda.<\/li>\n\n\n\n<li>Amharu ar iechyd meddwl a lles trigolion.<\/li>\n\n\n\n<li>Biliau ynni uwch a chynyddu allyriant o CO2.<\/li>\n\n\n\n<li>Effeithiau niweidiol ar fywyd gwyllt trwy amharu ar lwybrau mudo ac arferion paru gan arwain at ostyngiad mewn niferoedd. Gall golau artiffisial achosi i adar sy\u2019n mudo neu hela yn y nos golli\u2019u ffordd, neu fudo\u2019n rhy gynnar neu\u2019n rhy hwyr, a cholli\u2019r amgylchiadau delfrydol i nythu a fforio.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<h3 class=\"wp-block-heading\" id=\"did-you-know\">Oeddech chi\u2019n gwybod<\/h3>\n\n\n\n<p>Nid oes tystiolaeth wyddonol bendant bod mwy o olau y tu allan yn rhwystro troseddu. Efallai ei fod yn gwneud inni deimlo\u2019n fwy diogel, ond nid oes prawf ei fod yn ein gwneud yn fwy diogel.<\/p>\n<\/blockquote>\n\n\n\n<p>Dydi hyn ddim yn golygu ein bod am ichi ddiffodd pob golau! Y cyfan yr ydym yn ei annog yw:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Newid i fylbiau ynni isel (50w ac is)<\/li>\n\n\n\n<li>Defnyddiwch oleuadau LED gwyn llai llachar (chwiliwch am 3000 Kelvin neu is na hynny)<\/li>\n\n\n\n<li>Diffoddwch unrhyw oleuadau diangen<\/li>\n\n\n\n<li>Defnyddiwch oleuadau allanol sy\u2019n ymateb i symudiad (\u201cmotion sensors\u201d)<\/li>\n\n\n\n<li>Gosodwch orchudd dros oleuadau allanol a\u2019u troi at i lawr rhag i\u2019r golau ymledu i\u2019r awyr uwchben<\/li>\n\n\n\n<li>Ystyriwch ddefnyddio bylbiau watedd isel mewn goleuadau allanol<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Gall gormod o oleuadau, neu oleuadau anaddas effeithio\u2019n ddifrifol ar bobl a\u2019r amgylchedd. Mae llygredd golau yn derm cyffredin sy\u2019n cyfeirio at olau artiffisial sy\u2019n disgleirio pan nad oes ei eisiau na\u2019i angen.<\/p>\n","protected":false},"featured_media":2685,"menu_order":0,"template":"","article-category":[131,132],"class_list":["post-7599","article","type-article","status-publish","has-post-thumbnail","hentry","article-category-dark-skies-cy","article-category-discover-and-explore-cy"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Llygredd Golau - Clwydian Range and Dee Valley National Landscape<\/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:\/\/www.clwydianrangeanddeevalleyaonb.org.uk\/cy\/article\/light-pollution\/\" \/>\n<meta property=\"og:locale\" content=\"cy_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Llygredd Golau - Clwydian Range and Dee Valley National Landscape\" \/>\n<meta property=\"og:description\" content=\"Gall gormod o oleuadau, neu oleuadau anaddas effeithio\u2019n ddifrifol ar bobl a\u2019r amgylchedd. 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