I-NDVI imele i-Normalized Difference Vegetation Index. Iwuphawu oluvame ukusetshenziswa ekuqondeni kude kanye nezolimo ukuhlola nokuqapha impilo namandla ezimila.I-NDVIilinganisa umehluko phakathi kwamabhendi abomvu naseduze kwe-infrared (NIR) e-spectrum ye-electromagnetic, abanjwa ngamadivayisi okuzwa akude njengama-satellite noma ama-drone.

Ifomula yokubala i-NDVI yile:

I-NDVI = (NIR – Bomvu) / (NIR + Bomvu)

Kule fomula, ibhendi ye-NIR imele ukubonakaliswa kwe-near-infrared, kanti ibhendi ebomvu imele ukubonakaliswa kwe-red. Amanani asukela ku--1 kuya ku-1, kanye namanani aphezulu abonisa izitshalo ezinempilo neziminyene, kuyilapho amanani aphansi amelela izitshalo ezimbalwa noma umhlabathi ongenalutho.

Inganekwane ye-NDVI

I-NDVI isekelwe esimisweni sokuthi izitshalo ezinempilo zibonisa ukukhanya okucishe kube yi-infrared futhi zimunca ukukhanya okubomvu okwengeziwe. Ngokuqhathanisa ama-spectral band amabili,I-NDVIingahlukanisa ngempumelelo izinhlobo ezahlukene zokumbozwa komhlaba futhi inikeze ulwazi olubalulekile mayelana nobuningi bezitshalo, amaphethini okukhula, kanye nempilo iyonke.

Isetshenziswa kabanzi kwezolimo, emahlathini, ekuqapheni imvelo, nakweminye imikhakha ukuqapha izinguquko ezitshalweni ngokuhamba kwesikhathi, ukuhlola impilo yezitshalo, ukuhlonza izindawo ezithintekile yisomiso noma izifo, nokusekela izinqumo zokuphathwa komhlaba.

Ungayisebenzisa kanjani i-NDVI kwezolimo?

I-NDVI iyithuluzi eliwusizo kwezolimo lokuqapha impilo yezitshalo, ukuthuthukisa ukuphathwa kwezinsizakusebenza, kanye nokwenza izinqumo ezinolwazi. Nazi ezinye izindlela i-NDVI engasetshenziswa ngazo kwezolimo:

Ukuhlolwa Kwempilo Yezitshalo:

I-NDVI inganikeza ukuqonda ngempilo iyonke kanye namandla ezilimo. Ngokubamba njalo idatha ye-NDVI phakathi nesizini yokukhula, abalimi bangabona izindawo ezicindezelekile noma ukukhula kwezitshalo okungekuhle. Amanani aphansi e-NDVI angabonisa ukuntuleka kwezakhamzimba, izifo, ukucindezeleka kwamanzi, noma ukulimala kwezinambuzane. Ukutholwa kwalezi zinkinga kusenesikhathi kuvumela abalimi ukuthi bathathe izinyathelo zokulungisa, njengokunisela okuqondiwe, umanyolo, noma ukulawula izinambuzane.

Ukusetshenziswa kwe-NDVI kwezolimo

Ukubikezela Kwenzuzo:

Idatha ye-NDVI eqoqwe phakathi nesizini yokukhula ingasiza ekubikezeleni isivuno sezitshalo. NgokuqhathanisaI-NDVIamanani kuzo zonke izinkambu noma izifunda ezahlukene ngaphakathi kwensimu, abalimi bangabona izindawo ezinezivuno eziphezulu noma eziphansi. Lolu lwazi lungasiza ekwenzeni ngcono ukwabiwa kwezinsizakusebenza, ukulungisa ubuningi bokutshala, noma ukusebenzisa amasu okulima anembile ukuze kwandiswe umkhiqizo jikelele.

Ukuphathwa Kokunisela:

I-NDVI ingasiza ekwenzeni ngcono imikhuba yokunisela. Ngokuqapha amanani e-NDVI, abalimi banganquma izidingo zamanzi zezitshalo futhi babone izindawo zokunisela ngokweqile noma okunganele. Ukugcina amazinga omswakama wenhlabathi afanele ngokusekelwe kudatha ye-NDVI kungasiza ukonga imithombo yamanzi, ukunciphisa izindleko zokunisela, nokuvimbela ukucindezeleka kwamanzi noma ukugcwala kwamanzi ezitshalweni.

Ukuphathwa Komanyolo:

I-NDVI ingaqondisa ukusetshenziswa komanyolo. Ngokumaka amanani e-NDVI ensimini, abalimi bangabona izindawo ezinezidingo ezahlukene zezakhamzimba. Amanani aphezulu e-NDVI abonisa izitshalo ezinempilo nezikhula ngamandla, kuyilapho amanani aphansi angasikisela ukuntuleka kwezakhamzimba. Ngokusebenzisa umanyolo ngokunembe kakhulu ngokusekelwe ekusetshenzisweni kwesilinganiso esiguquguqukayo esiqondiswa yi-NDVI, abalimi bangathuthukisa ukusebenza kahle kokusetshenziswa kwezakhamzimba, banciphise imfucuza kamanyolo, futhi bakhuthaze ukukhula kwezitshalo okulinganiselayo.

Ukuqapha Izifo Nezinambuzane:I-NDVI ingasiza ekutholakaleni kusenesikhathi kwezifo noma ukutheleleka kwezinambuzane. Izitshalo ezingaphilile zivame ukubonisa amanani aphansi e-NDVI uma kuqhathaniswa nezitshalo ezinempilo. Ukuqapha njalo i-NDVI kungasiza ekuboneni izindawo ezingaba yinkinga, okuvumela ukungenelela ngesikhathi ngamasu okuphatha izifo afanele noma izinyathelo zokulawula izinambuzane eziqondiwe.

Ukumapha Kwensimu Nokuhlela Izindawo:Idatha ye-NDVI ingasetshenziswa ukudala amamephu ezitshalo anemininingwane yamasimu, okuvumela abalimi ukuthi babone ukwehluka kwempilo yezitshalo kanye namandla. Lawa mamephu angasetshenziswa ukudala izindawo zokuphatha, lapho izenzo ezithile, njengokusetshenziswa kwezinga eliguquguqukayo lokufakwayo, zingasetshenziswa ngokusekelwe ezidingweni ezithile zezindawo ezahlukene ngaphakathi kwensimu.

Ukuze basebenzise i-NDVI ngempumelelo kwezolimo, abalimi bavame ukuthembela kubuchwepheshe bokubona kude, njengezithombe zesathelayithi noma ama-drone, ahlonyiswe ngezinzwa ze-multispectral ezikwazi ukubamba ama-spectral band adingekayo. Amathuluzi esofthiwe akhethekile asetshenziswa ukucubungula nokuhlaziya idatha ye-NDVI, okuvumela abalimi ukuthi benze izinqumo ezinolwazi mayelana nemikhuba yokuphatha izitshalo.

Hlobo luni lwamalensi ekhamera afanele i-NDVI?

Uma uthwebula izithombe zokuhlaziywa kwe-NDVI, kubalulekile ukusebenzisa amalensi ekhamera athile afanelekela ukuthwebula ama-spectral band adingekayo. Nazi izinhlobo ezimbili ezivamile zamalensi asetshenziselwaI-NDVIizinhlelo zokusebenza:

Ilensi Yokukhanya Ebonakalayo Ejwayelekile:

Lolu hlobo lwelensi lubamba i-spectrum ebonakalayo (ngokuvamile esukela kuma-nanometer angu-400 kuya kwangu-700) futhi lusetshenziselwa ukubamba ibhendi ebomvu edingekayo ekubalweni kwe-NDVI. Ilensi yokukhanya ebonakalayo ejwayelekile ifaneleka kule njongo njengoba ivumela ukubamba ukukhanya okubomvu okubonakalayo okuboniswa yizitshalo.

Ilensi ye-Near-Infrared (NIR):

Ukuze kuthathwe ibhendi ye-near-infrared (NIR), ebalulekile ekubalweni kwe-NDVI, kudingeka ilensi ekhethekile ye-NIR. Le lensi ivumela ukuthwebula ukukhanya ebangeni le-near-infrared (ngokuvamile kusukela kuma-nanometer angu-700 kuya kwangu-1100). Kubalulekile ukuqinisekisa ukuthi ilensi iyakwazi ukuthwebula ngokunembile ukukhanya kwe-NIR ngaphandle kokukuhlunga noma ukukuhlanekezela.

Amalensi asetshenziselwa izinhlelo zokusebenza ze-NDVI

Kwezinye izimo, ikakhulukazi ezinhlelweni zobuchwepheshe zokuzwa kude, kusetshenziswa amakhamera e-multispectral. Lawa makhamera afakwe izinzwa eziningi noma izihlungi ezithwebula amabhendi athile e-spectral, kufaka phakathi amabhendi abomvu kanye ne-NIR adingekayo ku-NDVI. Amakhamera e-multispectral ahlinzeka ngedatha enembile nenembile yokubala kwe-NDVI uma kuqhathaniswa nokusebenzisa amalensi ahlukene kukhamera yokukhanya ebonakalayo ejwayelekile.

Kubalulekile ukuqaphela ukuthi uma usebenzisa ikhamera eguquliwe ekuhlaziyweni kwe-NDVI, lapho isihlungi sangaphakathi sekhamera sishintshiwe ukuze kuvunyelwe ukuthwebula i-NIR, amalensi athile alungiselelwe ukuthwebula ukukhanya kwe-NIR kungenzeka angadingeki.

Ekuphetheni, i-NDVI ibonakale iyithuluzi elibalulekile kwezolimo, ivumela abalimi ukuthi bathole ukuqonda okubalulekile ngempilo yezitshalo, bathuthukise ukuphathwa kwezinsizakusebenza, futhi benze izinqumo ezisekelwe kudatha. Njengoba isidingo esikhulayo sokuhlaziywa kwe-NDVI okunembile nokuphumelelayo, kubalulekile ukuba nemishini ethembekile ebamba ama-spectral band adingekayo ngokunemba.

KwaChuangAn, siyaqonda ukubaluleka kobuchwepheshe bokuthwebula izithombe obusezingeni eliphezulu ezinhlelweni zokusebenza ze-NDVI. Yingakho siziqhenya ngokwethula ubuchwepheshe bethuIlensi ye-NDVIes. Yakhelwe ngqo ukusetshenziswa kwezolimo, ilensi yethu yenzelwe ukubamba amabhande abomvu naseduze kwe-infrared ngokunemba nokucaca okumangalisayo.

Ukuguqulwa kwekhamera ye-NDVI

Ifaka ama-optics asezingeni eliphezulu kanye nezingubo zelensi ezithuthukisiwe, ilensi yethu ye-NDVI iqinisekisa ukuphambuka okuncane kokukhanya, iletha imiphumela ethembekile nehambisanayo yokubala kwe-NDVI. Ukuhambisana kwayo nezinhlobo ezahlukene zamakhamera kanye nokuhlanganiswa kwayo okulula kuyenza ibe ukukhetha okuhle kakhulu kubacwaningi bezolimo, izazi zezolimo, kanye nabalimi abafuna ukuphakamisa ukuhlaziywa kwabo kwe-NDVI.

Ngelensi ye-NDVI kaChuangAn, ungavula amandla aphelele obuchwepheshe be-NDVI, okukunika amandla okwenza izinqumo ezinolwazi oluthe xaxa mayelana nokuphathwa kokunisela, ukusetshenziswa komanyolo, ukutholwa kwezifo, kanye nokwenza ngcono isivuno. Thola umehluko ekunembileni nasekusebenzeni ngelensi yethu ye-NDVI yesimanje.

Ukuze ufunde kabanzi ngelensi yethu ye-NDVI kaChuangAn futhi uhlole ukuthi ingathuthukisa kanjani ukuhlaziywa kwakho kwe-NDVI, vakashela iwebhusayithi yethu.https://www.opticslens.com/ndvi-lenses-product/.

Khetha uChuangAn'sAmalensi e-NDVIfuthi uthuthukise ukuqapha nokuhlaziya kwakho kwezolimo. Thola umhlaba wamathuba ngobuchwepheshe bethu obuthuthukisiwe bokuthwebula izithombe.