I-NDVI imele iNormalized Difference Vegetation Index. Yi-index esetyenziswa kakhulu kwi-remote sensing kunye nezolimo ukuvavanya nokujonga impilo kunye namandla ezityalo.I-NDVIilinganisa umahluko phakathi kweebhendi ezibomvu nezikufutshane ne-infrared (NIR) ze-electromagnetic spectrum, ezibanjwa zizixhobo zokubona ezikude ezifana neesathelayithi okanye iidrone.

Ifomula yokubala i-NDVI yile:

NDVI = (NIR – Bomvu) / (NIR + Bomvu)

Kule fomula, ibhendi ye-NIR imele ukubonakaliswa kwe-infrared ekufutshane, kwaye ibhendi ebomvu imele ukubonakaliswa kwe-red. Amaxabiso aqala ku--1 ukuya ku-1, kunye namaxabiso aphezulu abonisa izityalo ezinempilo nezixineneyo, ngelixa amaxabiso aphantsi amele izityalo ezincinci okanye umhlaba ongenanto.

Intsomi ye-NDVI

I-NDVI isekelwe kumgaqo wokuba izityalo ezisempilweni zibonisa ukukhanya okukufutshane ne-infrared kwaye zifunxa ukukhanya okubomvu okungakumbi. Ngokuthelekisa iibhendi ezimbini ze-spectral,I-NDVIinokwahlula phakathi kweentlobo ezahlukeneyo zogqumo lomhlaba kwaye inike ulwazi oluxabisekileyo malunga nobuninzi bezityalo, iipateni zokukhula, kunye nempilo iyonke.

Isetyenziswa kakhulu kwezolimo, amahlathi, ukujonga okusingqongileyo, nakwezinye iindawo ukujonga utshintsho kwizityalo ngokuhamba kwexesha, ukuvavanya impilo yezityalo, ukuchonga iindawo ezichaphazelekileyo yimbalela okanye izifo, kunye nokuxhasa izigqibo zolawulo lomhlaba.

Uyisebenzisa njani i-NDVI kwezolimo?

I-NDVI sisixhobo esibalulekileyo kwezolimo sokujonga impilo yezityalo, ukuphucula ulawulo lwezixhobo, kunye nokwenza izigqibo ezinolwazi. Nazi ezinye iindlela i-NDVI enokusetyenziswa ngazo kwezolimo:

Uvavanyo lweMpilo yeZityalo:

I-NDVI inokubonelela ngengcaciso ngempilo iyonke kunye namandla ezityalo. Ngokubamba idatha ye-NDVI rhoqo ngexesha lokukhula, abalimi banokuchonga iindawo ezixinezelekileyo okanye ukukhula okungekuhle kwezityalo. Amaxabiso aphantsi e-NDVI anokubonisa ukunqongophala kwezondlo, izifo, uxinzelelo lwamanzi, okanye umonakalo wezinambuzane. Ukufunyanwa kwangethuba kwezi ngxaki kuvumela abalimi ukuba bathathe amanyathelo okulungisa, njengokunkcenkceshela okujoliswe kuko, ukuchumisa, okanye ukulawula izinambuzane.

Ukusetyenziswa kwe-NDVI kwezolimo

Uqikelelo lwesivuno:

Idatha ye-NDVI eqokelelwe kulo lonke ixesha lokukhula inokunceda ukuqikelela isivuno sesivuno. NgokuthelekisaI-NDVIamaxabiso kwiintsimi ezahlukeneyo okanye kwimimandla ngaphakathi kwintsimi, abalimi banokuchonga iindawo ezinesivuno esiphezulu okanye esiphantsi. Olu lwazi lunokunceda ekuphuculeni ukwabiwa kwezixhobo, ukulungisa uxinano lokutyala, okanye ukusebenzisa iindlela zokulima ezichanekileyo ukuze kwandiswe imveliso iyonke.

Ulawulo lokuNcedisa:

I-NDVI inokunceda ekwenzeni ngcono iindlela zokunkcenkceshela. Ngokujonga amaxabiso e-NDVI, abalimi banokumisela iimfuno zamanzi zezityalo baze bachonge iindawo ezinkcenkceshela kakhulu okanye ezingankcenkceshelwanga ngokwaneleyo. Ukugcina amanqanaba afanelekileyo okufuma komhlaba ngokusekelwe kwidatha ye-NDVI kunokunceda ukonga izixhobo zamanzi, ukunciphisa iindleko zokunkcenkceshela, kunye nokuthintela uxinzelelo lwamanzi okanye ukugcwala kwamanzi kwizityalo.

Ulawulo lweZichumiso:

I-NDVI ingakhokela ukusetyenziswa kwesichumiso. Ngokumapha amaxabiso e-NDVI kwintsimi, abalimi banokuchonga iindawo ezineemfuno ezahlukeneyo zesondlo. Amaxabiso aphezulu e-NDVI abonisa izityalo ezisempilweni nezikhula ngamandla, ngelixa amaxabiso aphantsi anokubonisa ukunqongophala kwezondlo. Ngokusebenzisa izichumiso ngokuchanekileyo ngokusekelwe ekusetyenzisweni kwesantya esiguquguqukayo esikhokelwa yi-NDVI, abalimi banokuphucula ukusetyenziswa kwezondlo ngokufanelekileyo, banciphise inkunkuma yezichumiso, kwaye bakhuthaze ukukhula kwezityalo okulinganayo.

Ukubeka Iliso Kwizifo Nezinambuzane:I-NDVI inokunceda ekufumaneni izifo kwangethuba okanye ukuhlasela kwezinambuzane. Izityalo ezingaphiliyo zihlala zibonisa amaxabiso aphantsi e-NDVI xa kuthelekiswa nezityalo eziphilileyo. Ukubeka iliso rhoqo kwi-NDVI kunokunceda ekuchongeni iindawo ezinokuba yingxaki, okuvumela ukungenelela ngexesha elifanelekileyo ngamaqhinga okulawula izifo afanelekileyo okanye amanyathelo okulawula izinambuzane ajoliswe kuwo.

Ukumaphuza iNdawo kunye nokuHlela iNdawo:Idatha ye-NDVI ingasetyenziselwa ukudala iimaphu zezityalo ezineenkcukacha zamasimi, okuvumela abalimi ukuba babone umahluko kwimpilo yezityalo kunye namandla azo. Ezi maphu zingasetyenziselwa ukudala iindawo zolawulo, apho izenzo ezithile, ezifana nokusetyenziswa kwezinga eliguquguqukayo lezinto ezifakwayo, zinokwenziwa ngokusekelwe kwiimfuno ezithile zeendawo ezahlukeneyo ngaphakathi kwentsimi.

Ukuze basebenzise i-NDVI ngempumelelo kwezolimo, abalimi badla ngokuxhomekeka kubuchwepheshe bokubona kude, njengemifanekiso yesathelayithi okanye iidrone, ezixhotyiswe ngee-multispectral sensors ezikwaziyo ukubamba ii-spectral bands ezifunekayo. Izixhobo zesoftware ezikhethekileyo zisetyenziselwa ukucubungula nokuhlalutya idatha ye-NDVI, okuvumela abalimi ukuba benze izigqibo ezinolwazi malunga neendlela zokulawula izityalo.

loluphi uhlobo lweelensi zekhamera ezifanelekileyo kwi-NDVI?

Xa uthatha imifanekiso yohlalutyo lwe-NDVI, kubalulekile ukusebenzisa iilensi zekhamera ezithile ezifanelekileyo ukuthabatha iibhendi ze-spectral ezifunekayo. Nazi iintlobo ezimbini eziqhelekileyo zeelensi ezisetyenziselwaI-NDVIizicelo:

Ilensi yokukhanya ebonakalayo eqhelekileyo:

Olu hlobo lwelensi lubamba i-spectrum ebonakalayo (ngokuvamile ukusuka kwi-400 ukuya kwi-700 nanometers) kwaye lusetyenziselwa ukubamba ibhendi ebomvu efunekayo ekubalweni kwe-NDVI. Ilensi yokukhanya ebonakalayo eqhelekileyo ifanelekile kule njongo kuba ivumela ukubamba ukukhanya okubomvu okubonakalayo okubonakaliswa zizityalo.

Ilensi yeNear-Infrared (NIR):

Ukuze kubanjwe ibhendi ye-near-infrared (NIR), ebalulekileyo ekubalweni kwe-NDVI, kufuneka ilensi ekhethekileyo ye-NIR. Le lensi ivumela ukubamba ukukhanya kuluhlu lwe-near-infrared (ngesiqhelo ukusuka kwi-700 ukuya kwi-1100 nanometers). Kubalulekile ukuqinisekisa ukuba ilensi iyakwazi ukubamba ngokuchanekileyo ukukhanya kwe-NIR ngaphandle kokuyihluza okanye ukuyijika.

Iilensi ezisetyenziselwa usetyenziso lwe-NDVI

Kwezinye iimeko, ingakumbi kwiinkqubo zobungcali zokubona kude, kusetyenziswa iikhamera ze-multispectral. Ezi khamera zixhotyiswe ngee-sensors ezininzi okanye izihluzi ezibamba iibhendi ezithile ze-spectral, kubandakanya iibhendi ezibomvu kunye ne-NIR ezifunekayo kwi-NDVI. Iikhamera ze-multispectral zibonelela ngedatha echanekileyo nechanekileyo yokubala i-NDVI xa kuthelekiswa nokusebenzisa iilensi ezahlukeneyo kwikhamera yokukhanya ebonakalayo eqhelekileyo.

Kubalulekile ukuqaphela ukuba xa kusetyenziswa ikhamera elungisiweyo kuhlalutyo lwe-NDVI, apho isihluzo sangaphakathi sekhamera sitshintshiwe ukuze kuvunyelwe ukubanjwa kwe-NIR, iilensi ezithile ezilungiselelwe ukubanjwa kokukhanya kwe-NIR zisenokungabi yimfuneko.

Ukuququmbela, i-NDVI ibonakalise ukuba sisixhobo esibaluleke kakhulu kwezolimo, ivumela abalimi ukuba bafumane ulwazi olubalulekileyo ngempilo yezityalo, baphucule ulawulo lwezixhobo, kwaye benze izigqibo ezisekelwe kulwazi. Ngenxa yemfuno ekhulayo yohlalutyo lwe-NDVI oluchanekileyo nolusebenzayo, kubalulekile ukuba nezixhobo ezithembekileyo ezibamba iibhendi ze-spectral ezifunekayo ngokuchanekileyo.

Apha eChuangAn, siyaqonda ukubaluleka kobuchwepheshe bokufota obukumgangatho ophezulu kwizicelo ze-NDVI. Yiyo loo nto sizingca ngokwazisaIlensi ye-NDVIes. Yenzelwe ngokukodwa ukusetyenziswa kwezolimo, ilensi yethu yenzelwe ukubamba iibhendi ezibomvu nezikufutshane ne-infrared ngokuchanekileyo nangokucacileyo okugqwesileyo.

Ukuguqulwa kwekhamera ye-NDVI

Isebenzisa i-optics yanamhlanje kunye neengubo zelensi eziphambili, ilensi yethu ye-NDVI iqinisekisa ukugqwetheka okuncinci kokukhanya, inika iziphumo ezithembekileyo nezihambelanayo zokubala kwe-NDVI. Ukuhambelana kwayo neekhamera ezahlukeneyo kunye nokudibanisa kwayo okulula kuyenza ibe lukhetho olufanelekileyo kubaphandi bezolimo, iingcali zezolimo, kunye nabalimi abafuna ukuphakamisa uhlalutyo lwabo lwe-NDVI.

Ngelensi ye-NDVI kaChuangAn, ungavula amandla apheleleyo etekhnoloji ye-NDVI, ikunike amandla okwenza izigqibo ezinolwazi oluthe kratya malunga nolawulo lokunkcenkceshela, ukusetyenziswa kwesichumiso, ukufunyanwa kwezifo, kunye nokwenza ngcono isivuno. Fumana umahluko ekuchanekeni nasekusebenzeni ngelensi yethu ye-NDVI yanamhlanje.

Ukuze ufunde okungakumbi ngelensi yethu ye-NDVI kaChuangAn kwaye uhlole indlela enokuyiphucula ngayo uhlalutyo lwakho lwe-NDVI, ndwendwela iwebhusayithi yethu.https://www.opticslens.com/ndvi-lenses-product/.

Khetha uChuangAn'sIilensi ze-NDVIkwaye uthabathe indawo yakho yokubeka esweni nohlalutyo lwezolimo uye kwinqanaba elitsha. Fumanisa ihlabathi lamathuba ngetekhnoloji yethu yokufota ephucukileyo.