{"id":572,"date":"2015-09-27T18:24:37","date_gmt":"2015-09-27T18:24:37","guid":{"rendered":"http:\/\/192.168.1.70\/wordpress\/?p=572"},"modified":"2022-09-01T18:36:49","modified_gmt":"2022-09-01T18:36:49","slug":"betra-en-endurheimts-votlendis","status":"publish","type":"post","link":"http:\/\/www.agust.net\/wordpress\/2015\/09\/27\/betra-en-endurheimts-votlendis\/","title":{"rendered":"Sk\u00f3gr\u00e6kt betri en “endurheimt votlendis”…?"},"content":{"rendered":"
\"H\u00e9r<\/a>

H\u00e9r var \u00e1\u00f0ur votlendi. N\u00fa er \u00fea\u00f0 fallegur sj\u00e1lfs\u00e1\u00f0ur sk\u00f3gur.<\/span><\/p><\/div>\n

Oft hefur m\u00e9r komi\u00f0 til hugar a\u00f0 \u201cendurheimt votlendis\u201d me\u00f0 \u00fev\u00ed a\u00f0 fylla \u00ed skur\u00f0i s\u00e9 ekki endilega r\u00e9tt a\u00f0fer\u00f0 til a\u00f0 minnka losun koltv\u00eds\u00fdrings.<\/p>\n

Annar m\u00f6guleiki til a\u00f0 binda kolefni, og jafnvel betri,\u00a0er a\u00f0 r\u00e6kta sk\u00f3g \u00e1 landinu, e\u00f0a einfaldlega fri\u00f0a \u00fea\u00f0 og leyfa sj\u00e1lfs\u00e1\u00f0um trj\u00e1pl\u00f6ntum a\u00f0 vaxa.<\/p>\n

\u00c1 myndinni efst \u00e1 s\u00ed\u00f0unni m\u00e1 sj\u00e1 hvernig fyrrum votlendi hefur gerbreytt um svip \u00e1 f\u00e1um \u00e1ratugum. \u00dearna var landi\u00f0 r\u00e6st me\u00f0 m\u00f6rgum skur\u00f0um, en hefur lengi veri\u00f0 laust vi\u00f0 \u00e1gang hesta og kinda. Svona sk\u00f3gur er v\u00e6ntanlega duglegur a\u00f0 binda koltv\u00eds\u00fdring og au\u00f0vita\u00f0 miklu fallegri en einhver d\u00fdjam\u00fdri. \u00dearna hefur engu veri\u00f0 planta\u00f0. Allt er sj\u00e1lfs\u00e1\u00f0.<\/p>\n

Landi\u00f0 er ofarlega \u00ed uppsveitum og er alllangt s\u00ed\u00f0an landi\u00f0 var \u00feurrka\u00f0 me\u00f0 skur\u00f0greftri. \u00c1 myndinni h\u00e9r fyrir ne\u00f0an sj\u00e1st \u00feessir skur\u00f0ir og hvernig myndin var tekin til vesturs.<\/p>\n

Til \u00feess a\u00f0 fl\u00fdta fyrir a\u00f0 sk\u00f3gur vaxi upp n\u00e1nast af sj\u00e1lfd\u00e1\u00f0um m\u00e6tti planta f\u00e1einum birkipl\u00f6ntum h\u00e9r og \u00fear, jafnvel a\u00f0eins 100 stk. \u00ed hvern hektara, \u00fe.e. um 10 metrar milli pantnanna. Eftir nokkur \u00e1r fara \u00feessi tr\u00e9 a\u00f0 bera fr\u00e6 og ver\u00f0a fr\u00e6lindir. Sj\u00e1lfs\u00e1\u00f0ar pl\u00f6ntur fara a\u00f0 skj\u00f3ta upp kollinum v\u00edtt og breitt. \u00c1 f\u00e1einum \u00e1ratugum ver\u00f0ur birkisk\u00f3gurinn \u00fe\u00e9ttur og fallegur. \u00deetta kostar l\u00edti\u00f0 sem ekkert, e\u00f0a \u00ferj\u00e1 bakka af birkipl\u00f6ntum \u00ed hvern hektara. Um 15.000 kr\u00f3nur kosta pl\u00f6nturnar samtals. Au\u00f0vita\u00f0 ver\u00f0ur einnig a\u00f0 gir\u00f0a landi\u00f0 fj\u00e1rheldri gir\u00f0ingu.<\/p>\n

A\u00f0 sj\u00e1lfs\u00f6g\u00f0u m\u00e1 planta \u00fe\u00e9ttar, nota fleiri tegundir en birki og jafnvel stunda formlega sk\u00f3gr\u00e6kt. En til a\u00f0 koma til meira og minna sj\u00e1lfs\u00e1\u00f0um sk\u00f3gi \u00fearf litla fyrirh\u00f6fn. Fyrst og fremst \u00fearf a\u00f0 fri\u00f0a landi\u00f0 og gir\u00f0a, og tryggja a\u00f0 fr\u00e6lindir skorti ekki.<\/p>\n

S\u00ed\u00f0an er au\u00f0vita\u00f0 einfalt a\u00f0 fl\u00e9tta svona birkisk\u00f3g vi\u00f0 votlendissv\u00e6\u00f0i me\u00f0 \u00fev\u00ed a\u00f0 fylla \u00ed skur\u00f0i \u00ed hluta landsins. \u00deannig m\u00e1 fara bil beggja og tryggja fj\u00f6lbreytt fugla- og pl\u00f6ntul\u00edf \u00e1samt skj\u00f3lg\u00f3\u00f0um sk\u00f3gi.<\/p>\n

\n
\"Skur\u00f0akerfi\u00f0<\/a>

Skur\u00f0akerfi\u00f0 leynir s\u00e9r ekki.\u00a0 Samkv\u00e6mt m\u00e6lingu eru a\u00f0 me\u00f0altali 43 metrar milli skur\u00f0a (fr\u00e1 mi\u00f0ju skur\u00f0ar \u00ed mi\u00f0ju, samtals 300 metrar m\u00e6lt yfir 7 bil).\u00a0<\/span><\/p><\/div>\n

\"\"

Fengi\u00f0 a\u00f0 l\u00e1ni \u00far Sk\u00f3gr\u00e6ktarritinu 2019, 1.tbl.<\/p><\/div>\n

 <\/p>\n

Veltum \u00feessu fyrir okkur:
\n<\/b>Hve lengi losar m\u00fdri sem hefur veri\u00f0 \u00feurrku\u00f0 CO2<\/sub>?\u00a0 A\u00f0 \u00fev\u00ed hl\u00fdtur a\u00f0 koma a\u00f0 \u00f3rotnu\u00f0u jurtaleyfarnar \u00ed fyrrum m\u00fdrinni hafi a\u00f0 mesu rotna\u00f0 og breyst \u00ed frj\u00f3sama gr\u00f3\u00f0urmold. \u00dea\u00f0 tekur ekki mj\u00f6g langan t\u00edma. Eftir \u00fea\u00f0 er losunin ekki meiri en fr\u00e1 venjulegum \u00fathaga og \u00fe\u00f6rfin fyrir a\u00f0 endurheimta votlendi\u00f0 til a\u00f0 minnka losun \u00e1 CO2<\/sub> \u00fe\u00e1 engin. \u00c1rangur af \u00fev\u00ed bleyta upp \u00feannig land g\u00e6ti h\u00e6glega veri\u00f0 enginn s\u00e9 horft til losunar \u00e1 CO2<\/sub>.<\/p>\n

Ekki er \u00f3l\u00edklegt a\u00f0 losun \u00feurrku\u00f0u m\u00fdrarinnar fylgi veldisfalli eins og algengt er \u00ed n\u00e1tt\u00farunni. Losunin v\u00e6ri \u00fe\u00e1 mest \u00ed byrjun, en f\u00e6ri hratt minnkandi. Ef til vill er h\u00fan or\u00f0in \u00f3veruleg eftir f\u00e1eina \u00e1ratugi.<\/p>\n

A\u00f0 bleyta upp land sem breyst hefur \u00far m\u00fdrarjar\u00f0vegi \u00ed frj\u00f3saman jar\u00f0veg hefur \u00fev\u00ed ef til vill ekki nokkurn tilgang. \u00dea\u00f0 hj\u00e1lpar au\u00f0vita\u00f0 ekkert a\u00f0 st\u00f6\u00f0va losun sem af n\u00e1tt\u00farulegum \u00e1st\u00e6\u00f0um er or\u00f0in l\u00edtil sem engin.<\/p>\n

Svo m\u00e1 ekki gleyma \u00fev\u00ed, a\u00f0 \u00fe\u00f3 a\u00f0 blautar m\u00fdrar losi ekki nema takamarka\u00f0 af CO2<\/sub>, \u00fe\u00e1 losa \u00fe\u00e6r metan. Metan er um 25 sinnum virkara gr\u00f3\u00f0urh\u00fasagas en koltv\u00eds\u00fdringur, svo \u00fea\u00f0 kann a\u00f0 vera a\u00f0 fara \u00far \u00f6skunni \u00ed eldinn a\u00f0 bleyta upp land til a\u00f0 endurheimta votlendi!<\/em><\/span><\/p>\n

Nokkrar spurningar sem menn kunna vafal\u00edti\u00f0 svar vi\u00f0:<\/p>\n

    \n
  1. Hve mikil er \u00e1rleg losun CO2<\/sub> pr. hektara fyrst eftir skur\u00f0gr\u00f6ft mi\u00f0a\u00f0 vi\u00f0 d\u00e6miger\u00f0a m\u00fdri?<\/span><\/li>\n
  2. Hva\u00f0 \u00e6tli \u00e1rleg losun CO2<\/sub> s\u00e9 eftir 10 \u00e1r? \u00a020 \u00e1r? 30 \u00e1r?<\/span><\/li>\n
  3. Eftir hve langan t\u00edma fr\u00e1 \u00fev\u00ed skur\u00f0ir voru grafnir er losun \u00e1 CO2 or\u00f0in \u00f3vera mi\u00f0a\u00f0 vi\u00f0 \u00fea\u00f0 sem h\u00fan var flj\u00f3tlega eftir skur\u00f0gr\u00f6ft?<\/span><\/li>\n
  4. Hve miki\u00f0 minnkar losun CO2<\/sub> eftir bleytingu?<\/span><\/li>\n
  5. Hve miki\u00f0 bindur sk\u00f3gur pr. ha. sem planta\u00f0 er \u00ed \u00feurrka\u00f0 land?<\/span><\/li>\n
  6. Er v\u00edst a\u00f0 bleyting e\u00f0a endurheimt votlendis s\u00e9 \u00e1rangursr\u00edkari en sk\u00f3gr\u00e6kt \u00e1 sama sta\u00f0? \u00a0\u00a0<\/span><\/li>\n
  7. Hver mikil eru \u00e1hrif \u00fatstreymis metans fr\u00e1 blautum m\u00fdrum \u00e1 hl\u00fdnun mi\u00f0a\u00f0 vi\u00f0 \u00fatstreymi CO2<\/sub> fr\u00e1 \u00feurrku\u00f0um m\u00fdrum?<\/span><\/li>\n
  8. Getur veri\u00f0, a\u00f0 \u00feegar landi sem \u00feurrka\u00f0 hefur veri\u00f0 upp fyrir nokkrum \u00e1ratugum er breytt \u00ed m\u00fdri aftur, a\u00f0 \u00fe\u00e1 fari \u00ed gang losun metans sem er sk\u00e6\u00f0ari valdur hl\u00fdnunar en \u00fatstreymi koltv\u00eds\u00fdrings sem var or\u00f0i\u00f0 l\u00edti\u00f0? (Sem sagt, fari\u00f0 \u00far \u00f6skunni \u00ed eldinn)<\/span>.<\/span><\/li>\n
  9. V\u00ed\u00f0a er jar\u00f0vegurinn \u00fear sem m\u00fdrlendi er a\u00f0 t\u00f6luver\u00f0u leyti \u00far \u00f3l\u00edfr\u00e6num efnum, t.d. blanda\u00f0ur eldfjalla\u00f6sku og vikri, og jafnvel \u00e1foki fr\u00e1 uppbl\u00e6stri \u00e1 h\u00e1lendinu. \u00deannig g\u00e6ti til d\u00e6mis veri\u00f0 \u00e1statt um votlendi\u00f0 Almenning skamt fr\u00e1 Geysi, en jar\u00f0vegur \u00fear r\u00e9tt nor\u00f0ar er \u00f3frj\u00f3r af \u00feessum s\u00f6kum. \u00deannig m\u00fdrlendi getur ekki losa\u00f0 miki\u00f0 CO2<\/sub> vi\u00f0 \u00feurrkun. Hefur \u00feetta veri\u00f0 teki\u00f0 me\u00f0 \u00ed \u00fatreikningum?<\/span><\/li>\n
  10. Hve st\u00f3r hluti b\u00e6nda og landeigenda er tilb\u00fainn a\u00f0 f\u00f3rna \u00feurrlendi \u00ed \u00feeirra eigu, en \u00feeir f\u00e1 ekki greitt nokkurn skapa\u00f0an hlut fyrir landi\u00f0?<\/span><\/li>\n<\/ol>\n<\/div>\n

     <\/p>\n

    F\u00e1ir vir\u00f0ast kunna svar vi\u00f0 \u00feessum spurningum, sem \u00fe\u00f3 eru grundvallaratri\u00f0i \u00ed umr\u00e6\u00f0unni um laoftslagsm\u00e1l.<\/strong><\/p>\n

    \n

    “Samkv\u00e6mt g\u00f6gnum Landgr\u00e6\u00f0slu r\u00edkisins bindur sunnlensk l\u00fap\u00ednubrei\u00f0a a\u00f0 me\u00f0altali 5 tonn CO2<\/sub> \u00e1 hektara og \u00e1ri. \u00c1 \u00feurrari og kaldari sv\u00e6\u00f0um landsins er bindihra\u00f0inn eitthva\u00f0 l\u00e6gri”.<\/p>\n

    “Samkv\u00e6mt g\u00f6gnum Sk\u00f3gr\u00e6ktarinnar nemur me\u00f0albinding \u00ed \u00f6llu r\u00e6ktu\u00f0u sk\u00f3glendi \u00e1 \u00cdslandi (\u00f3h\u00e1\u00f0 trj\u00e1tegund e\u00f0a landshluta) um 10 tonnum CO2<\/sub> \u00e1 ha og \u00e1ri (7,7 \u00ed trj\u00e1num sj\u00e1lfum og svo 2,3 \u00ed jar\u00f0veginum). Hra\u00f0vaxnar tegundir \u00e1 kostalandi (s.s. \u00ed jar\u00f0vegi sem l\u00fap\u00ednan hefur umdirb\u00fai\u00f0) geta bundi\u00f0 mun meira en \u00feetta me\u00f0altal gefur til kynna, sennilega upp undir 30 tonn\/ha\/\u00e1r”.<\/p>\n

    (A\u00f0alsteinn Sigurgeirsson. FB\u00a0 2018-08-08)<\/p>\n<\/blockquote>\n

     <\/p>\n

    Fullyr\u00f0ingar hugsanlega st\u00f3rlega \u00fdktar um st\u00e6r\u00f0 m\u00fdra og losun \u00e1 koltv\u00eds\u00fdringi.<\/strong><\/p>\n

    Dr. \u00deorsteinn Gu\u00f0mundsson, sem hefur m.a. starfa\u00f0 sem pr\u00f3fessor \u00ed jar\u00f0vegsfr\u00e6\u00f0i vi\u00f0 Land\u00adb\u00fana\u00f0arh\u00e1sk\u00f3la \u00cdslands, og dr. Gu\u00f0ni \u00deorvaldsson, pr\u00f3\u00adfessor \u00ed jar\u00f0r\u00e6kt vi\u00f0 Lbh\u00cd, telja endurheimt votlendis \u00ed st\u00f3rum st\u00edl kunni a\u00f0 vera st\u00f3rlega ofmetin lei\u00f0 til a\u00f0 draga \u00far losun gr\u00f3\u00f0urh\u00fasalofttegunda \u00e1 \u00cdslandi.<\/p>\n

    Telja \u00feeir \u00fdmsa skekkjuvalda orsaka \u00fea\u00f0 a\u00f0 mat \u00e1 losun gr\u00f3\u00f0urh\u00fasalofttegunda \u00far \u00edslenskum m\u00fdrum kunni a\u00f0 vera rangt. Ranns\u00f3knir skorti auk \u00feess sem ekki gangi a\u00f0 taka erlenda sta\u00f0la og heimf\u00e6ra \u00fe\u00e1 beint upp \u00e1 afar misjafnar a\u00f0st\u00e6\u00f0ur \u00e1 \u00cdslandi… …<\/p>\n

    Sj\u00e1 meira h\u00e9r<\/a> \u00ed B\u00e6ndabla\u00f0inu.<\/em><\/p><\/blockquote>\n<\/div>\n

     <\/p>\n

    \n

    Framr\u00e6st land n\u00fa \u00e1\u00e6tla\u00f0 70 \u00fe\u00fasund hekturum minna en \u00e1\u00f0ur var tali\u00f0.<\/strong>
    \nJ\u00f3n Gu\u00f0mundsson, lektor vi\u00f0 Lbh\u00cd
    \n…<\/h4>\n
    Losun stendur a\u00f0eins yfir \u00ed 50 \u00e1r<\/strong><\/div>\n
    <\/div>\n
    \n

    \u00cd meistararitger\u00f0 Gunnhildar Evu Gunnarsd\u00f3ttur vi\u00f0 H\u00e1sk\u00f3la \u00cdslands\u00a0 fr\u00e1 2017 var reynt a\u00f0 meta losun kolefnis \u00ed \u00feurrku\u00f0um m\u00fdrum. Ni\u00f0urst\u00f6\u00f0ur hennar benda til a\u00f0 losun s\u00e9 mest fyrstu \u00e1rin en s\u00e9 s\u00ed\u00f0an hlutlaus a\u00f0 50 \u00e1rum li\u00f0num.<\/em> \u00dea\u00f0 er ekki \u00ed samr\u00e6mi vi\u00f0 \u00fe\u00e6r vi\u00f0mi\u00f0unart\u00f6lur sem yfirv\u00f6ld \u00e1 \u00cdslandi sty\u00f0jast vi\u00f0 \u00ed s\u00ednum a\u00f0ger\u00f0ar\u00e1\u00e6tlunum. \u00dea\u00f0 \u00fe\u00fd\u00f0ir v\u00e6ntanlega a\u00f0 losunart\u00f6lur geti veri\u00f0 st\u00f3rlega \u00fdktar og mokstur \u00ed st\u00e6rstan hluta skur\u00f0a \u00e1 \u00cdslandi kunni \u00fev\u00ed a\u00f0 \u00fej\u00f3na litlum sem engum tilgangi. Jar\u00f0raski\u00f0 sem af \u00fev\u00ed hl\u00fdst g\u00e6ti hinsvegar allt eins\u00a0 leitt til aukinnar losunar”.<\/p>\n

    Sj\u00e1 meira h\u00e9r<\/a> \u00ed B\u00e6ndabla\u00f0inu.<\/p>\n<\/div>\n

    <\/h4>\n<\/blockquote>\n

     <\/p>\n

     <\/p>\n

     <\/p>\n

    \n
    \"\"

    Helmingunart\u00edmi losunar koltv\u00eds\u00fdrings \u00far m\u00fdri sem sem \u00feurrku\u00f0 hefur veri\u00f0 me\u00f0 skur\u00f0greftri<\/span><\/p><\/div>\n<\/div>\n

     <\/p>\n

    Flestir efnaferlar var\u00f0andi ni\u00f0urbrot fylgja veldisfalli. Sama gildir um fj\u00f6lm\u00f6rg fyrirb\u00e6ri \u00ed n\u00e1tt\u00farunni. Losun CO2<\/sub> \u00far framr\u00e6stu m\u00fdrlendi fylgir v\u00e6ntanlega einnig veldisferli. Losunin \u00a0er mest \u00ed byrjun, en fellur s\u00ed\u00f0an nokku\u00f0 hratt.<\/p>\n

    Helmingunart\u00edmi er skilgreindur sem t\u00edminn \u00fear til losun \u00e1 t\u00edmaeiningu (t.d. \u00e1 \u00e1ri) er komin ni\u00f0ur \u00ed helming af \u00fev\u00ed sem h\u00fan var \u00ed byrjun. Ef helmingunart\u00edminn var\u00f0andi losun \u00e1 CO2<\/sub> \u00far framr\u00e6stri m\u00fdri er 10 \u00e1r, \u00fe\u00e1 er \u00e1rleg losun komin ni\u00f0ur \u00ed fj\u00f3r\u00f0ung eftir 20 \u00e1r, 12% eftir 30 \u00e1r og 6% eftir 40 \u00e1r.<\/p>\n

    Sem sagt, eftir f\u00e1eina \u00e1ratugi er \u00e1rleg losun or\u00f0in \u00f3vera mi\u00f0a\u00f0 vi\u00f0 a\u00f0 helmingunart\u00edminn s\u00e9 10 \u00e1r.<\/p>\n

    \u00dea\u00f0 er \u00fev\u00ed ekki n\u00f3g a\u00f0 \u00e1\u00e6tla augnabliksgildi\u00f0 \u00e1 losun CO2<\/sub> \u00far framr\u00e6stum m\u00fdrum. Vi\u00f0 \u00feurfum a\u00f0 \u00feekkja \u00fea\u00f0 sem fall af t\u00edma og \u00fear me\u00f0 helmingunart\u00edmann (e\u00f0a t\u00edmastu\u00f0ulinn ef \u00fea\u00f0 hentar betur) vi\u00f0 d\u00e6miger\u00f0ar \u00edslenskar a\u00f0st\u00e6\u00f0ur. \u00de\u00e1 fyrst getum vi\u00f0 fari\u00f0 a\u00f0 r\u00e6\u00f0a af viti um \u00fea\u00f0 hvort vit s\u00e9 \u00ed a\u00f0 bleyta upp framr\u00e6st land.<\/p>\n

    \n

    Helmingunart\u00edminn er grundvallaratri\u00f0i sem nau\u00f0synlegt er a\u00f0 \u00feekkja nokkurn vegin, \u00fev\u00ed \u00e1rangur af \u00fev\u00ed a\u00f0 bleyta upp gamla \u00feurrka\u00f0a m\u00fdri er l\u00edtill sem enginn<\/span><\/p>\n

    Hver \u00e6tli helmingunart\u00edminn s\u00e9? \u00c6tli 10 \u00e1r s\u00e9 fjarri lagi?<\/span><\/p>\n<\/div>\n

    —<\/p>\n

    70 \u00e1ra gamlir skur\u00f0ir:<\/strong>
    \nUm mi\u00f0jan n\u00f3vember 2018 var \u00edtarleg umfj\u00f6llun um endurheimt votlendis \u00ed Kveik R\u00edkissj\u00f3nvarpsins.<\/span>
    \n    http:\/\/www.ruv.is\/kveikur\/endurheimt-votlendis\/<\/span><\/a><\/p>\n

    Me\u00f0al annars var vi\u00f0tal vi\u00f0 Sigurbj\u00f6rn Hjaltason, b\u00f3nda \u00e1 Ki\u00f0afelli \u00ed Kj\u00f3s sem hefur veri\u00f0 a\u00f0 fylla \u00ed skur\u00f0i. Tilgangurinn er endurheimt votlendis.<\/span><\/p>\n

    \u00cd Kveik kom fram a\u00f0 “Skur\u00f0irnir sem Sigurbj\u00f6rn hefur unni\u00f0 a\u00f0 \u00fev\u00ed a\u00f0 fylla upp \u00ed eru fr\u00e1 um 1950…”<\/em><\/span><\/p>\n

    \u00dea\u00f0 eru sem sagt 70 \u00e1r s\u00ed\u00f0an \u00feessir skur\u00f0ir voru grafnir. Hve langt skyldi umbreyting jar\u00f0vegsins \u00far m\u00fdrarjar\u00f0vegi \u00ed “venjulega” mold vera komin, \u00fe.e., hve miki\u00f0 hefur losun CO2<\/sub> \u00e1 t\u00edmaeiningu og flatareiningu minnka\u00f0 \u00e1 \u00feessum 70 \u00e1rum? Getur veri\u00f0 a\u00f0 losun CO2<\/sub> s\u00e9 a\u00f0 mestu loki\u00f0?<\/span><\/p>\n

    Blautt land (m\u00fdri) losar metan. Getur veri\u00f0 a\u00f0 landi\u00f0 me\u00f0 fyrrverandi 70 \u00e1ra skur\u00f0um fari a\u00f0 losa metan aftur \u00feegar b\u00fai\u00f0 er a\u00f0 bleyta \u00fea\u00f0 upp? Er \u00fe\u00e1 etv. veri\u00f0 a\u00f0 fara \u00far \u00f6skunni \u00ed eldinn, en hafa m\u00e1 \u00ed huga a\u00f0 metan er 25 sinnum \u00e1hrifameira sem gr\u00f3\u00f0urh\u00fasagas en koltv\u00eds\u00fdringur.<\/span><\/p>\n

    \n

     <\/p>\n<\/div>\n

    Samantekt:
    \n<\/strong>M\u00fdrar losa metan sem er 20 sinnum virkara gr\u00f3\u00f0urh\u00fasagas en koltv\u00eds\u00fdringur sem losnar me\u00f0an jurtaleyfar \u00ed \u00feurrku\u00f0um m\u00fdrum rotna og breytast \u00ed mold. Losun metans minnkar, en losun koltv\u00eds\u00fdrings eykst t\u00edmabundi\u00f0 me\u00f0an rotnun jurtaleyfa er \u00ed gangi. “T\u00edmabundi\u00f0” er lykilatri\u00f0i.<\/p>\n

    Vissulega er magn m\u00e6lt \u00ed kg \u00e1 hektara metans \u00ed blautri m\u00fdri minna en koltv\u00eds\u00fdrings \u00ed \u00feurrka\u00f0ri m\u00fdri fyrstu \u00e1rin, en hver eru hlutfallsleg \u00e1hrif metans \u00ed blautri m\u00fdri og koltv\u00eds\u00fdrings me\u00f0an umbreytingin er \u00ed fullum gangi fyrstu \u00e1rin og s\u00ed\u00f0an n\u00e6stu \u00e1ratugi? Gleymum ekki a\u00f0 taka t\u00edmann sem l\u00ed\u00f0ur me\u00f0 \u00ed reikninginn. Hver eru hlutf\u00f6llin eftir t.d. 20 \u00e1r, og s\u00ed\u00f0an eftir 50 \u00e1r?\u00a0 (Allt mi\u00f0a\u00f0 vi\u00f0 upprunalegt \u00e1stand, \u00fe.e. losun metans fr\u00e1 \u00f3raska\u00f0ri m\u00fdri).<\/p>\n

    Sv\u00e6\u00f0i sem \u00feurrku\u00f0 hafa veri\u00f0 \u00e1 undanf\u00f6rnum \u00e1rum eru enn a\u00f0 losa koltv\u00eds\u00fdring, en eftir \u00fev\u00ed sem t\u00edminn l\u00ed\u00f0ur minnkar losunin \u00fear til h\u00fan ver\u00f0ur ekki meiri en fr\u00e1 venjulegum \u00fathaga, \u00fe.e. \u00f3veruleg. \u00deegar \u00fea\u00f0 hefur gerst hefur bleyting landsins \u00fever\u00f6fug \u00e1hrif vi\u00f0 \u00fea\u00f0 sem \u00e6tlunin var vegna losunar metans sem \u00fe\u00e1 hefst. Losun hinnar \u00f6flugu gr\u00f3\u00f0urh\u00fasalofttegundar metans fer \u00fe\u00e1 sm\u00e1m saman \u00e1 fullt og helst \u00feannig um \u00f3komna framt\u00ed\u00f0.<\/p>\n

    Hvort er sk\u00e1rra:<\/strong> T\u00edmabundin losun koltv\u00eds\u00fdrings \u00ed f\u00e1eina \u00e1ratugi fr\u00e1 \u00feurrka\u00f0ri m\u00fdri, e\u00f0a \u00f3t\u00edmabundin losun metans um alla framt\u00ed\u00f0 fr\u00e1 bleyttu landi?<\/span><\/p>\n

    \u00dea\u00f0 er eins gott a\u00f0 velta \u00feessu a\u00f0eins fyrir s\u00e9r \u00e1\u00f0ur en \u00feurru landi er breytt \u00ed m\u00fdri \u00ed sta\u00f0 \u00feess a\u00f0 r\u00e6kta \u00fear sk\u00f3g.<\/p>\n

     <\/p>\n

    \"\"

    Fyllt \u00ed skur\u00f0 vi\u00f0 Bessasta\u00f0i. Skur\u00f0urinn er greinilega gamall og landi\u00f0 l\u00f6ngu h\u00e6tt a\u00f0 losa CO2<\/sub>.<\/span>
    Myndin er fengin a\u00f0 l\u00e1ni af vef R\u00daV.<\/span><\/p><\/div>\n

    <\/h2>\n

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    \u00cdtarefni:<\/h2>\n
    \n

     <\/p>\n

    M\u00fdrvi\u00f0ur<\/strong>
    \nRanns\u00f3knarverkefni um kolefnisb\u00faskap \u00ed framr\u00e6stum m\u00fdrum<\/strong>
    \n    https:\/\/www.skogur.is\/is\/um-skograektina\/frettir-og-vidburdir\/frettir-og-pistlar\/myrvidur<\/a><\/p>\n

    M\u00ddRVI\u00d0UR \u2013 loftslags\u00e1hrif sk\u00f3gr\u00e6ktar \u00e1 framr\u00e6stu m\u00fdrlendi<\/strong>
    \n    https:\/\/www.skogur.is\/static\/files\/2014\/Fylgiskjal-A.docx<\/a><\/p>\n

    Meira um losun gr\u00f3\u00f0urh\u00fasalofttegunda \u00far votlendi<\/strong>
    \nDr. \u00deorsteinn Gu\u00f0mundsson Dr. Gu\u00f0ni \u00deorvaldsson
    \n    https:\/\/www.bbl.is\/frettir\/fraedsluhornid\/meira-um-losun-grodurhusalofttegunda-ur-votlendi\/18770\/<\/a><\/p>\n

     <\/p>\n

    MYNDBAND:
    \nSandl\u00e6kjarm\u00fdri, M\u00fdrvi\u00f0ur, \u00c1rlegur v\u00f6xtur<\/strong>
    \n