{"id":5470,"date":"2022-08-10T17:39:00","date_gmt":"2022-08-10T15:39:00","guid":{"rendered":"https:\/\/geopard.tech\/?p=5470"},"modified":"2026-09-29T10:15:44","modified_gmt":"2026-09-29T08:15:44","slug":"kas-ir-ndvi-normalizetais-diferencialais-vegetacijas-indekss","status":"publish","type":"post","link":"https:\/\/geopard.tech\/lv\/blog\/what-is-ndvi-normalized-difference-vegetation-index\/","title":{"rendered":"Normaliz\u0113ts diferenci\u0101lais ve\u0123et\u0101cijas indekss (NDVI) atvieglo lauksaimnieku dz\u012bvi"},"content":{"rendered":"<p>Normaliz\u0113tais diferenci\u0101lais ve\u0123et\u0101cijas indekss (NDVI) ir bie\u017ei izmantots r\u0101d\u012bt\u0101js, lai kvantitat\u012bvi noteiktu ve\u0123et\u0101cijas bl\u012bvumu un vesel\u012bbu. T\u0101 v\u0113rt\u012bbas sv\u0101rst\u0101s no -1 l\u012bdz 1, kur negat\u012bvas v\u0113rt\u012bbas nor\u0101da uz \u016bdeni vai kailu augsni, v\u0113rt\u012bbas, kas ir tuvu nullei, nor\u0101da uz retu ve\u0123et\u0101ciju, bet augst\u0101kas v\u0113rt\u012bbas nor\u0101da uz bl\u012bv\u0101ku un vesel\u012bg\u0101ku ve\u0123et\u0101ciju.<\/p>\n<h2>Kas ir normaliz\u0113tais diferenci\u0101lais ve\u0123et\u0101cijas indekss (NDVI)?<\/h2>\n<p>T\u0101 ir metode, kas apr\u0113\u0137ina at\u0161\u0137ir\u012bbu starp ve\u0123et\u0101cijas uztvert\u0101s sarkan\u0101s gaismas daudzumu un ve\u0123et\u0101cijas sp\u0113c\u012bgi atstarot\u0101s tuv\u0101s infrasarkan\u0101s gaismas daudzumu.<\/p>\n<p>\u0160\u012bs metodes m\u0113r\u0137is ir sniegt kvantitat\u012bvu augu valsts st\u0101vok\u013ca anal\u012bzi. Nav t\u0101das situ\u0101cijas, kur\u0101 t\u0101s v\u0113rt\u012bba neietilpst diapazon\u0101 no -1 l\u012bdz +1. Tom\u0113r nav skaidras robe\u017eas starp daudzajiem zemes seguma veidiem, ko var atrast.<\/p>\n<p>Ja skait\u013cu summa ir maz\u0101ka par nulli, ir diezgan ticams, ka attiec\u012bg\u0101 viela ir \u016bdens. Ja ieg\u016btais NDVI r\u0101d\u012bt\u0101js ir diezgan tuvu pozit\u012bvam, past\u0101v liela iesp\u0113ja, ka t\u0101 ir tikai cie\u0161i sakrautu za\u013cu lapu kopa. Tas jo \u012bpa\u0161i attiecas uz gad\u012bjumiem, kad lapas ir bl\u012bvi sakrautas kop\u0101.<\/p>\n<p>Za\u013c\u0101m lap\u0101m ir liel\u0101ka v\u0113rt\u012bba nek\u0101 sarkan\u0101m lap\u0101m, t\u0101p\u0113c tas t\u0101 ir. Iedom\u0101jieties uz br\u012bdi, ka t\u0101 ir \u013coti tuvu nullei.<\/p>\n<p>\u0160\u0101d\u0101 situ\u0101cij\u0101 ir maza iesp\u0113ja, ka tur joproj\u0101m ir k\u0101das lapas, un re\u0123ions \u0161aj\u0101 br\u012bd\u012b var\u0113tu b\u016bt pat urbaniz\u0113ts. Normaliz\u0113tais ve\u0123et\u0101cijas diferenci\u0101cijas indikators ir indekss, ko anal\u012bti\u0137i izmanto \u0161\u0101d\u0101s jom\u0101s: <a href=\"https:\/\/geopard.tech\/lv\/emuars\/talizpetes-veidi-lauksaimnieciba\/\">att\u0101l\u0101 izp\u0113te<\/a> liel\u0101ko da\u013cu laika.<\/p>\n<h2>K\u0101p\u0113c normaliz\u0113tais diferenci\u0101lais ve\u0123et\u0101cijas indekss ir noder\u012bgs?<\/h2>\n<p>Ir daudz da\u017e\u0101du ve\u0123et\u0101cijas indeksu, un liel\u0101k\u0101 da\u013ca no tiem ir sal\u012bdzin\u0101mi viens ar otru. Tom\u0113r tie\u0161i \u0161is indekss tiek izmantots visbie\u017e\u0101k un vispla\u0161\u0101k, un tam ir ar\u012b b\u016btiska priek\u0161roc\u012bba \u2013 augsta att\u0113lu iz\u0161\u0137irtsp\u0113ja, kas ieg\u016bti no <a href=\"https:\/\/help.geopard.tech\/web\/satellitemonitor\/\">satel\u012btu dati<\/a>.<\/p>\n<p>\u0160\u0101dos apst\u0101k\u013cos NDVI noteik\u0161anai var izmantot kan\u0101lus ar desmit metru iz\u0161\u0137irtsp\u0113ju. Atcerieties, ka viens pikselis ir vien\u0101ds ar desmit reiz desmit metriem. No otras puses, indeksa iz\u0161\u0137irtsp\u0113ja, kas izmanto papildu gaismas kan\u0101lus, proti, sarkano vecumu, var b\u016bt divdesmit metri, kur viens pikselis ir vien\u0101ds ar divdesmit reiz divdesmit metriem.<\/p>\n<h2>K\u0101 tiek apr\u0113\u0137in\u0101ts NDVI?<\/h2>\n<p>To var noteikt, izmantojot \u0161\u0101du vienk\u0101r\u0161u matem\u0101tisku proced\u016bru, kas neapstr\u0101d\u0101tu satel\u012bta inform\u0101ciju p\u0101rveido ve\u0123et\u0101cijas indeksos.<\/p>\n<p><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" data-attachment-id=\"5475\" data-permalink=\"https:\/\/geopard.tech\/lv\/blog\/what-is-ndvi-normalized-difference-vegetation-index\/74-2-min\/\" data-orig-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.2-min.jpg?fit=2400%2C1300&amp;ssl=1\" data-orig-size=\"2400,1300\" data-comments-opened=\"1\" data-image-title=\"Normalized Difference Vegetation Index formula\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.2-min.jpg?fit=1024%2C555&amp;ssl=1\" class=\"wp-image-5475 aligncenter\" src=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.2-min.jpg?resize=810%2C439&#038;ssl=1\" alt=\"Normaliz\u0113t\u0101 diferenci\u0101l\u0101 ve\u0123et\u0101cijas indeksa formula\" width=\"810\" height=\"439\" srcset=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.2-min.jpg?resize=1024%2C555&amp;ssl=1 1024w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.2-min.jpg?resize=300%2C163&amp;ssl=1 300w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.2-min.jpg?resize=768%2C416&amp;ssl=1 768w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.2-min.jpg?resize=1536%2C832&amp;ssl=1 1536w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.2-min.jpg?resize=2048%2C1109&amp;ssl=1 2048w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.2-min.jpg?resize=1200%2C650&amp;ssl=1 1200w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.2-min.jpg?w=1620&amp;ssl=1 1620w\" sizes=\"(max-width: 810px) 100vw, 810px\" \/><\/p>\n<p>Vien\u0101dojums rada vienu reprezentat\u012bvu skaitli un integr\u0113 inform\u0101ciju, kas ir pieejama sarkanaj\u0101 un NIR (tuv\u0113j\u0101 infrasarkan\u0101 starojuma) josl\u0101s.<\/p>\n<p>Lai to izdar\u012btu, tiek \u0146emta atstaro\u0161anas v\u0113rt\u012bba vis\u0101 sarkanaj\u0101 spektra josl\u0101 un at\u0146emta no atstaro\u0161anas v\u0113rt\u012bbas vis\u0101 tuv\u0101 infrasarkan\u0101 (NIR) josl\u0101. P\u0113c tam rezult\u0101ts tiek dal\u012bts ar kop\u0113jo atstaro\u0161anas v\u0113rt\u012bbu tuv\u0101 infrasarkan\u0101 (NIR) un sarkan\u0101 vi\u013c\u0146u garuma diapazon\u0101.<\/p>\n<p>NDVI nov\u0113rt\u0113jums nekad neb\u016bs vair\u0101k k\u0101 pozit\u012bvs un maz\u0101ks par negat\u012bvu. Turkl\u0101t skaitlis no -1 l\u012bdz 0 apz\u012bm\u0113 miru\u0161u augu un neorganiskus objektus, piem\u0113ram, akme\u0146us, ce\u013cus un \u0113kas.<\/p>\n<p>Vienlaikus t\u0101 v\u0113rt\u012bbas dz\u012bviem augiem var main\u012bties no 0 l\u012bdz 1, kur 1 apz\u012bm\u0113 vesel\u012bg\u0101ko augu un 0 \u2014 nevesel\u012bg\u0101ko augu. Katram att\u0113la pikselim ir iesp\u0113jams pie\u0161\u0137irt vienu v\u0113rt\u012bbu neatkar\u012bgi no t\u0101, vai \u0161is pikselis apz\u012bm\u0113 vienu lapu vai kvie\u0161u lauku, kas aptver 500 akrus.<\/p>\n<h2>K\u0101 m\u0113s izmantojam normaliz\u0113to diferenci\u0101lo ve\u0123et\u0101cijas indeksu?<\/h2>\n<p>Pamatoti, to tagad izmanto vair\u0101k\u0101s da\u017e\u0101d\u0101s p\u0113tniec\u012bbas jom\u0101s. Piem\u0113ram, lauksaimniec\u012bbas jom\u0101 to izmanto prec\u012bz\u0101s lauksaimniec\u012bbas un biomasas nov\u0113rt\u0113\u0161anas m\u0113r\u0137iem. To izmanto ar\u012b me\u017esaimnieki, lai nov\u0113rt\u0113tu me\u017ea resursus, k\u0101 ar\u012b lapu plat\u012bbas indeksu (LAI).<\/p>\n<p>Turkl\u0101t NASA uzskata, ka tas ir uzticams sausuma apst\u0101k\u013cu esam\u012bbas r\u0101d\u012bt\u0101js. Gan proporcion\u0101lais NDVI, gan ve\u0123et\u0101cijas koncentr\u0101cija ir zem\u0101ka apgabalos, kur \u016bdens kalpo k\u0101 \u0161\u0137\u0113rslis ve\u0123et\u0101cijas iedz\u012bvo\u0161anai.<\/p>\n<p>Tas ir t\u0101p\u0113c, ka \u016bdens ne\u013cauj augu sakn\u0113m augt dzi\u013c\u0101k augsn\u0113. Tas, ieskaitot cita veida <a href=\"https:\/\/geopard.tech\/lv\/emuars\/talizpetes-veidi-lauksaimnieciba\/\">att\u0101l\u0101 izp\u0113te<\/a>, realit\u0101t\u0113 var tikt izmantots \u013coti da\u017e\u0101dos veidos.<\/p>\n<h2>Ko NDVI var past\u0101st\u012bt par augiem?<\/h2>\n<p>Ir svar\u012bgi labi izprast normaliz\u0113to starp\u012bbu. <a href=\"https:\/\/geopard.tech\/lv\/emuars\/vegetacijas-indekss-ka-tos-izmanto-precizaja-lauksaimnieciba\/\">Ve\u0123et\u0101cijas indekss<\/a> ir tikai auga vesel\u012bbas st\u0101vok\u013ca nor\u0101de un nesniedz nek\u0101du inform\u0101ciju par noteikta st\u0101vok\u013ca c\u0113lo\u0146iem.<\/p>\n<p>Ve\u0123et\u0101cijas indekss dr\u012bz\u0101k ir izpausme, nevis tie\u0161s lauka apst\u0101k\u013cu atspogu\u013cojums. Apskat\u012bsim tr\u012bs NDVI pielietojumus lauka anal\u012bz\u0113:<\/p>\n<p><strong>Kad s\u0101kas jauna sezona<\/strong><\/p>\n<p>Tas ir noder\u012bgi, lai izprastu auga ziemciet\u012bbu un to, k\u0101 tam izdev\u0101s izdz\u012bvot.<\/p>\n<ul>\n<li>Ja t\u0101 v\u0113rt\u012bba ir maz\u0101ka par 0,15, ir diezgan ticams, ka visi augi \u0161aj\u0101 lauka da\u013c\u0101 ir g\u0101ju\u0161i boj\u0101. Parasti \u0161ie skait\u013ci attiecas uz apstr\u0101d\u0101tu augsni bez augiem.<\/li>\n<li>V\u0113l viens zema skait\u013ca piem\u0113rs ir 0,15\u20130,2. Tas var\u0113tu liecin\u0101t, ka augi s\u0101ka gatavoties ziemai agr\u012bn\u0101 fenolo\u0123iskaj\u0101 period\u0101, pirms augsnes apstr\u0101des stadijas.<\/li>\n<li>Rezult\u0101ts diapazon\u0101 no 0,2 l\u012bdz 0,3 ir apmierino\u0161s. Augi, visticam\u0101k, ir sasniegu\u0161i ar\u0161anas stadiju un atguvu\u0161i ve\u0123etat\u012bvo st\u0101vokli. 0,3\u2212<\/li>\n<li>0,5 ir pie\u0146emama v\u0113rt\u012bba. Tom\u0113r ir svar\u012bgi atcer\u0113ties, ka augst\u0101ki NDVI r\u0101d\u012bjumi liecina, ka augi p\u0101rziemoja v\u0113l\u0101k\u0101 fenolo\u0123iskaj\u0101 stadij\u0101. Pie\u0146emsim, ka satel\u012btatt\u0113ls tika uz\u0146emts pirms ve\u0123et\u0101cijas atgrie\u0161an\u0101s norm\u0101l\u0101 st\u0101vokl\u012b. T\u0101d\u0101 gad\u012bjum\u0101 ir svar\u012bgi analiz\u0113t teritoriju p\u0113c tam, kad ve\u0123et\u0101cija turpin\u0101ja savu norm\u0101lo formu.<\/li>\n<li>Skaitlis, kas liel\u0101ks par 0,5, nor\u0101da uz anom\u0101liju p\u0113cziemo\u0161anas f\u0101z\u0113. Ieteicams p\u0101rbaud\u012bt \u0161o lauka zonu.<\/li>\n<\/ul>\n<p>Rezum\u0113jot, ja paman\u0101t, ka ieg\u016bt\u0101s v\u0113rt\u012bbas b\u016btiski at\u0161\u0137iras no normas, jums j\u0101p\u0101rbauda attiec\u012bg\u0101 lauka da\u013ca. Lai v\u0113rt\u012bbas konkr\u0113taj\u0101 apgabal\u0101 tiktu klasific\u0113tas k\u0101 neparastas, ir nepiecie\u0161ama liela novirze no normas.<\/p>\n<p><strong>Kad sezona ir pusce\u013c\u0101<\/strong><\/p>\n<p>Indeksa izmanto\u0161ana var\u0113tu pal\u012bdz\u0113t lab\u0101k izprast augu att\u012bst\u012bbu. Iedom\u0101jieties, ka r\u0101d\u012bjumi ir starp m\u0113reniem un augstiem (0,5\u20130,85). Ir \u013coti iesp\u0113jams, ka \u0161aj\u0101 konkr\u0113taj\u0101 apgabala da\u013c\u0101 pa\u0161laik nav lielu probl\u0113mu.<\/p>\n<p>Ja indekss joproj\u0101m ir zem\u0101ks nek\u0101 tam vajadz\u0113tu b\u016bt, var b\u016bt t\u0101das probl\u0113mas k\u0101 augsnes \u016bdens vai bar\u012bbas vielu tr\u016bkums. Tom\u0113r jums ir j\u0101veic sava izmekl\u0113\u0161ana \u0161aj\u0101 konkr\u0113taj\u0101 jom\u0101.<\/p>\n<p>M\u0113s \u0123ener\u0113jam <a href=\"https:\/\/geopard.tech\/lv\/parvaldibas-zonu-vra-kartes\/\">main\u012bgas devas lieto\u0161anas (VRA) kartes<\/a> sl\u0101pek\u013ca daudzumu, izmantojot normaliz\u0113to diferenci\u0101lo ve\u0123et\u0101cijas indeksu. M\u0113s identific\u0113jam re\u0123ionus ar ve\u0123et\u0101cijas indeksiem, kas sv\u0101rst\u0101s no zema l\u012bdz augstam.<\/p>\n<p>P\u0113c tam lauksaimnieks pats var noteikt nepiecie\u0161amo m\u0113slojuma daudzumu. Visefekt\u012bv\u0101k\u0101 sl\u0101pek\u013ca lieto\u0161anas metode ir \u0161\u0101da:<\/p>\n<ul>\n<li>Pie\u0146emsim, ka re\u0123iona ve\u0123et\u0101cijas indekss ir augsts. T\u0101d\u0101 gad\u012bjum\u0101 ieteicam\u0101 m\u0113slojuma deva j\u0101samazina l\u012bdz 10 un 30 procentiem no tipisk\u0101s devas.<\/li>\n<li>Ja ve\u0123et\u0101cijas indekss ir aptuveni vid\u0113js, ieteicam\u0101 m\u0113slojuma deva j\u0101palielina l\u012bdz 20\u201325 procentiem no tipisk\u0101s devas.<\/li>\n<li>Ja ve\u0123et\u0101cijas indekss ir zems, vispirms j\u0101noskaidro, k\u0101p\u0113c tas t\u0101 ir.<\/li>\n<\/ul>\n<p>Lai rekonstru\u0113tu lauku <a href=\"https:\/\/geopard.tech\/lv\/razas-dati\/\">lauksaimniec\u012bbas ra\u017ea<\/a>, m\u0113s ar\u012b izmantojam \u0161o indeksu. Ar \u0161iem datiem m\u0113s veidojam kartes, kuras var izmantot k\u0101lija un fosf\u0101tu m\u0113slo\u0161anas l\u012bdzek\u013cu main\u012bgas devas lieto\u0161anai.<\/p>\n<p><strong>Kad sezona ir beigusies<\/strong><\/p>\n<p>NDVI indekss ir noder\u012bgs r\u012bks, lai noteiktu, vai lauki ir gatavi ra\u017eas nov\u0101k\u0161anai; jo zem\u0101ks indekss, jo tuv\u0101k da\u013ca plat\u012bbas tuvojas posmam, kad t\u0101 ir gatava ra\u017eas nov\u0101k\u0161anai. \u0160\u0101d\u0101 gad\u012bjum\u0101 ide\u0101la b\u016btu indeksa v\u0113rt\u012bba, kas zem\u0101ka par 0,25.<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"5476\" data-permalink=\"https:\/\/geopard.tech\/lv\/blog\/what-is-ndvi-normalized-difference-vegetation-index\/74-3-min-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.3-min-1.jpg?fit=2400%2C1300&amp;ssl=1\" data-orig-size=\"2400,1300\" data-comments-opened=\"1\" data-image-title=\"What can NDVI tell us about plants\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.3-min-1.jpg?fit=1024%2C555&amp;ssl=1\" class=\"wp-image-5476 aligncenter\" src=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.3-min-1.jpg?resize=810%2C439&#038;ssl=1\" alt=\"NDVI indekss ir noder\u012bgs r\u012bks, lai noteiktu, vai lauki ir gatavi ra\u017eas nov\u0101k\u0161anai.\" width=\"810\" height=\"439\" srcset=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.3-min-1.jpg?resize=1024%2C555&amp;ssl=1 1024w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.3-min-1.jpg?resize=300%2C163&amp;ssl=1 300w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.3-min-1.jpg?resize=768%2C416&amp;ssl=1 768w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.3-min-1.jpg?resize=1536%2C832&amp;ssl=1 1536w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.3-min-1.jpg?resize=2048%2C1109&amp;ssl=1 2048w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.3-min-1.jpg?resize=1200%2C650&amp;ssl=1 1200w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2022\/07\/74.3-min-1.jpg?w=1620&amp;ssl=1 1620w\" sizes=\"(max-width: 810px) 100vw, 810px\" \/><\/p>\n<p>S\u0101kum\u0101 tas ir matem\u0101tisks apr\u0113\u0137ins, kas tiek veikts pikseli pa pikselim uz att\u0113la, izmantojot \u0122IS (\u0123eogr\u0101fisk\u0101s inform\u0101cijas sist\u0113mas) r\u012bkus. Tas tiek apr\u0113\u0137in\u0101ts, sal\u012bdzinot auga absorb\u0113t\u0101s un atstarot\u0101s sarkan\u0101s un tuv\u0101s infrasarkan\u0101s gaismas daudzumus, un tiek m\u0113r\u012bts auga visp\u0101r\u0113jais vesel\u012bbas st\u0101voklis.<\/p>\n<p>Normaliz\u0113to diferenci\u0101l\u0101s ve\u0123et\u0101cijas indeksu var izmantot, lai p\u0113t\u012btu zemi vis\u0101 pasaul\u0113, padarot to par ide\u0101li piem\u0113rotu m\u0113r\u0137tiec\u012bgiem lauka p\u0113t\u012bjumiem un valsts vai glob\u0101lam ve\u0123et\u0101cijas monitoringam.<\/p>\n<p>Izmantojot NDVI, m\u0113s varam ieg\u016bt t\u016bl\u012bt\u0113ju lauku anal\u012bzi, kas \u013cauj lauksaimniekiem optimiz\u0113t plat\u012bbu ra\u017eo\u0161anas potenci\u0101lu, ierobe\u017eot to ietekmi uz vidi un piel\u0101got prec\u012bz\u0101s lauksaimniec\u012bbas darb\u012bbas.<\/p>\n<p>Turkl\u0101t, to izp\u0113tot kop\u0101 ar citiem datu avotiem, piem\u0113ram, par laikapst\u0101k\u013ciem, var\u0113tu sniegt dzi\u013c\u0101ku ieskatu atk\u0101rtotos sausuma, salu vai pl\u016bdu mode\u013cos un to ietekm\u0113 ve\u0123et\u0101ciju.<\/p>\n<hr \/>\n<h2>Bie\u017e\u0101k uzdotie jaut\u0101jumi<\/h2>\n<hr \/>\n<p><strong>1. Ko galvenok\u0101rt nosaka ar NDVI?<\/strong><\/p>\n<p>To galvenok\u0101rt izmanto, lai noteiktu ve\u0123et\u0101cijas vesel\u012bbu un bl\u012bvumu noteikt\u0101 apgabal\u0101. \u0160o indeksu pla\u0161i izmanto lauksaimniec\u012bb\u0101, me\u017esaimniec\u012bb\u0101 un ekolo\u0123ij\u0101, lai uzraudz\u012btu ve\u0123et\u0101cijas aug\u0161anu, nov\u0113rt\u0113tu augu stresa l\u012bmeni, identific\u0113tu sausuma vai slim\u012bbu skart\u0101s zonas un pal\u012bdz\u0113tu pie\u0146emt l\u0113mumus par kult\u016braugu apsaimnieko\u0161anu.<\/p>\n<p><strong>2. K\u0101 las\u012bt NDVI att\u0113lus?<\/strong><\/p>\n<p>Lai las\u012btu NDVI att\u0113lus, var interpret\u0113t ar indeksa v\u0113rt\u012bb\u0101m saist\u012bto kr\u0101su skalu. Parasti vesel\u012bga ve\u0123et\u0101cija izskat\u0101s za\u013ca, savuk\u0101rt maz\u0101k vesel\u012bga vai skraja ve\u0123et\u0101cija izskat\u0101s dzeltena vai sarkana.<\/p>\n<p>Tum\u0161\u0101ki to\u0146i var nor\u0101d\u012bt uz apgabaliem ar augstu biomasu, savuk\u0101rt gai\u0161\u0101ki to\u0146i var liecin\u0101t par zem\u0101ku ve\u0123et\u0101cijas bl\u012bvumu vai kailas augsnes kl\u0101tb\u016btni.<\/p>\n<p>Izpratne par analiz\u0113jam\u0101s teritorijas kontekstu, piem\u0113ram, konkr\u0113to kult\u016braugu veidu vai vides apst\u0101k\u013ciem, var v\u0113l vair\u0101k pal\u012bdz\u0113t interpret\u0113t NDVI att\u0113lus un pie\u0146emt pamatotus l\u0113mumus par lauksaimniec\u012bbas praksi.<\/p>\n\n\n<div class=\"gp-lead\">\n<section class=\"gpx-aiband\">\n  <style>\n    .gp-lead .gpx-aiband{display:flex;align-items:center;gap:24px;flex-wrap:wrap;background:#f2f7ee;border:1px solid #d6e2c5;border-radius:14px;padding:22px 26px;margin:26px 0}\n    .gp-lead .gpx-aiband-txt{flex:1 1 380px}\n    .gp-lead .gpx-aiband-new{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.05em;color:#ffffff;background:#f76a0c;border-radius:999px;padding:3px 9px;vertical-align:3px;margin-left:10px}\n    .gp-lead .gpx-aiband h2{margin:0;font-size:1.3rem}\n    .gp-lead .gpx-aiband p{margin:8px 0 0;color:#4c6066;font-size:.98rem;line-height:1.55}\n    .gp-lead .gpx-aiband-btn{flex:0 0 auto;display:inline-flex;align-items:center;min-height:46px;background:#15701e;color:#ffffff;font-weight:600;padding:0 22px;border-radius:999px;text-decoration:none}\n    .gp-lead .gpx-aiband-btn:hover{background:#145328;color:#ffffff}\n    @media (max-width:640px){ .gp-lead .gpx-aiband{padding:18px} .gp-lead .gpx-aiband-btn{width:100%;justify-content:center} }\n  <\/style>\n  <div class=\"gpx-aiband-txt\">\n    <h2>Iepaz\u012bstieties ar GeoPard m\u0101ksl\u012bg\u0101 intelekta pal\u012bgu<span class=\"gpx-aiband-new\">JAUNS<\/span><\/h2>\n    <p>Prec\u012bz\u0101s lauksaimniec\u012bbas sprie\u0161anas m\u0101ksl\u012bgais intelekts: tas uzdod pareizos agronomiskos jaut\u0101jumus, par\u0101da savus matem\u0101tiskos apr\u0113\u0137inus un no j\u016bsu datiem izveido p\u0101rbaud\u012btas receptes. J\u016bs apstiprin\u0101t katru soli.<\/p>\n  <\/div>\n  <a class=\"gpx-aiband-btn\" href=\"https:\/\/geopard.tech\/lv\/maksligais-intelekts\/\">V\u0113rojiet, k\u0101 dom\u0101 m\u0101ksl\u012bgais intelekts \u2192<\/a>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Normaliz\u0113tais diferenci\u0101lais ve\u0123et\u0101cijas indekss (NDVI) ir bie\u017ei izmantots r\u0101d\u012bt\u0101js, lai kvantitat\u012bvi noteiktu ve\u0123et\u0101cijas bl\u012bvumu un vesel\u012bbu. T\u0101 v\u0113rt\u012bbas sv\u0101rst\u0101s no -1 l\u012bdz 1,\u2026<\/p>","protected":false},"author":210157960,"featured_media":5474,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_eb_attr":"","content-type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"{title}\n\n{excerpt}\n\n{url}","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[1662,1380,1377],"tags":[1619,1618],"class_list":["post-5470","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ndvi","category-whats","category-crop-monitoring","tag-normalized-difference-vegetation-index","tag-crop-monitoring"],"acf":[],"yoast_head":"<!-- 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