Ko te NDVI he whakarāpopototanga mō te Normalized Difference Vegetation Index. He taupū e whakamahia whānuitia ana i roto i te tirohanga mamao me te ahuwhenua hei aromatawai me te aroturuki i te hauora me te kaha o ngā tipu.NDVIE ine ana i te rerekētanga i waenga i ngā roopu whero me ngā roopu tata-infrared (NIR) o te whānuitanga hikohiko, e hopukina ana e ngā taputapu pūoko mamao pērā i ngā amiorangi me ngā waka rererangi rererangi.

Ko te tātai mō te tatau i te NDVI ko:

NDVI = (NIR – Whero) / (NIR + Whero)

I roto i tēnei tātai, ko te roopu NIR e tohu ana i te whakaata tata-infrared, ā, ko te roopu Whero e tohu ana i te whakaata whero. Kei waenga i te -1 ki te 1 ngā uara, ko ngā uara teitei ake e tohu ana i te hauora me te matotoru o ngā tipu, ko ngā uara iti ake e tohu ana i te iti ake o ngā tipu, i te whenua tahanga rānei.

Te pūrākau NDVI

Ko te kaupapa o te NDVI he whakaata i te mārama tata-whero, ā, he nui ake te mārama whero e mimitihia ana e ngā tipu hauora. Mā te whakataurite i ngā roopu hihi e rua,NDVIka taea te wehewehe i waenga i ngā momo uhi whenua me te whakarato i ngā mōhiohio whai hua mō te kiato o ngā tipu, ngā tauira tipu, me te hauora whānui.

E whakamahia whānuitia ana i roto i te ahuwhenua, te ngahere, te aroturukitanga taiao, me ētahi atu mara hei aroturuki i ngā panonitanga o ngā tipu i roto i te wā, hei aromatawai i te hauora o ngā hua, hei tautuhi i ngā wāhi e pāngia ana e te tauraki, e te mate rānei, me te tautoko i ngā whakataunga whakahaere whenua.

Me pēhea te whakamahi i te NDVI i roto i te ahuwhenua?

He taputapu whai hua te NDVI i roto i te ahuwhenua hei aroturuki i te hauora o ngā hua, hei whakapai ake i te whakahaere rauemi, hei whakatau whai whakaaro hoki. Anei ētahi huarahi ka taea te whakamahi i te NDVI i roto i te ahuwhenua:

Aromatawai Hauora Huawhenua:

Ka taea e te NDVI te whakarato i ngā māramatanga ki te hauora me te kaha whānui o ngā hua. Mā te hopu i ngā raraunga NDVI i ia wā i ia wā tipu, ka taea e ngā kaimahi pāmu te tautuhi i ngā wāhi e pāngia ana e te ahotea, e te ngoikore rānei o te whanaketanga o ngā tipu. Ko ngā uara NDVI iti ka tohu pea i te korenga o ngā matūkai, te mate, te ahotea wai, te kino rānei o ngā pepeke. Mā te kitenga wawe i ēnei take ka taea e ngā kaimahi pāmu te mahi i ngā mahi whakatika, pērā i te whakamakuku kua whakaritea, te whakawairakau, te whakahaere pepeke rānei.

Te whakamahinga o te NDVI i roto i te ahuwhenua

Matapae Hua:

Mā ngā raraunga NDVI i kohia puta noa i te wā tipu ka āwhina i te matapae i ngā hua o te hua. Mā te whakatairiteNDVII roto i ngā uara puta noa i ngā mara rerekē, i ngā rohe rānei i roto i tētahi mara, ka taea e ngā kaimahi pāmu te tautuhi i ngā wāhi he nui ake, he iti iho rānei ngā hua ka puta. Ka taea e ēnei mōhiohio te āwhina i te arotau i te tohatoha rauemi, te whakarerekē i te kiato o te whakato, te whakatinana rānei i ngā tikanga ahuwhenua tika hei whakanui ake i te hua whānui.

Whakahaere Whakamakuku:

Ka taea e te NDVI te āwhina i te whakapai ake i ngā mahi whakamakuku. Mā te aroturuki i ngā uara NDVI, ka taea e ngā kaimahi pāmu te whakatau i ngā hiahia wai o ngā hua me te tautuhi i ngā wāhi e nui rawa ana te whakamakuku, e kore rānei e nui rawa ana te whakamakuku. Mā te pupuri i ngā taumata makuku oneone tino pai i runga i ngā raraunga NDVI ka āwhina i te tiaki i ngā rauemi wai, te whakaiti i ngā utu whakamakuku, me te ārai i te ahotea wai, te waipuke rānei o ngā tipu.

Whakahaere Tongi:

Ka taea e te NDVI te ārahi i te tono tongi. Mā te mahere i ngā uara NDVI puta noa i tētahi mara, ka taea e ngā kaimahi pāmu te tautuhi i ngā wāhi he rerekē ngā hiahia matūkai. Ko ngā uara NDVI teitei e tohu ana i te tipu hauora me te kaha, ko ngā uara iti e tohu ana i te korenga o ngā matūkai. Mā te tono tongi kia tika ake i runga i te tono tere rerekē e arahina ana e te NDVI, ka taea e ngā kaimahi pāmu te whakapai ake i te whai huatanga o te whakamahinga matūkai, te whakaiti i te para tongi, me te whakatairanga i te tipu tipu taurite.

Te Aroturuki i ngā Mate me ngā Pepeke:Ka āwhina te NDVI ki te kite wawe i ngā mate, i ngā whakaekenga pepeke rānei. He iti ake te uara NDVI o ngā tipu kore hauora i ngā tipu hauora. Mā te aroturukitanga NDVI auau ka āwhina i te tautuhi i ngā wāhi raru pea, ka taea ai te wawaotanga wawe me ngā rautaki whakahaere mate tika, ngā mahi whakahaere pepeke rānei.

Te Mahere Whenua me te Whakatakotoranga Rohe:Ka taea te whakamahi i ngā raraunga NDVI hei waihanga i ngā mahere tipu taipitopito o ngā mara, kia taea ai e ngā kaimahi pāmu te tautuhi i ngā rerekētanga o te hauora me te kaha o ngā hua. Ka taea te whakamahi i ēnei mahere hei waihanga i ngā rohe whakahaere, ka taea ai te whakatinana i ngā mahi motuhake, pērā i te tono tere rerekē o ngā whakaurunga, i runga i ngā hiahia motuhake o ngā rohe rerekē i roto i te mara.

Hei whakamahi tika i te NDVI i roto i te ahuwhenua, ka whakawhirinaki ngā kaimahi pāmu ki ngā hangarau pūoko mamao, pērā i ngā whakaahua amiorangi, ngā waka rererangi rānei, he pūoko maha-tirotiro e taea ai te hopu i ngā whānuitanga tirotiro e hiahiatia ana. Ka whakamahia ngā taputapu pūmanawa motuhake hei tukatuka me te tātari i ngā raraunga NDVI, kia taea ai e ngā kaimahi pāmu te whakatau whai whakaaro mō ngā mahi whakahaere hua.

He aha te momo arotahi kāmera e tika ana mō te NDVI?

I te wā e hopu whakaahua ana mō te tātari NDVI, he mea nui kia whakamahia ngā karāhe kāmera motuhake e tika ana mō te hopu i ngā roopu hihi e hiahiatia ana. Anei ngā momo karāhe e rua e whakamahia whānuitia ana mōNDVIngā tono:

Arotahi Mārama Kitea Noa:

Ka hopukina e tēnei momo arotahi te whānuitanga e kitea ana (mai i te 400 ki te 700 nanometer te whānui) ā, ka whakamahia hei hopu i te whitiki whero e hiahiatia ana mō te tatau NDVI. He pai te arotahi mārama kitea paerewa mō tēnei kaupapa nā te mea ka taea te hopu i te mārama whero e whakaatahia ana e ngā tipu.

Arotahi Tata-Ira-Whawhā (NIR):

Hei hopu i te awhe tata-infrared (NIR), he mea nui mō te tatau NDVI, me whakamahi he karāhe NIR motuhake. Mā tēnei karāhe ka taea te hopu mārama i te awhe tata-infrared (mai i te 700 ki te 1100 nanometer). He mea nui kia whakarite kia taea e te karāhe te hopu tika i te mārama NIR me te kore e tātari, e whakapēpē rānei.

Ngā karāhe e whakamahia ana mō ngā tono NDVI

I ētahi wā, inā koa mō ngā tono pūoko mamao ngaio, ka whakamahia ngā kāmera maha-tirohanga. He maha ngā pūoko, ngā tātari rānei kei roto i ēnei kāmera e hopu ana i ngā roopu hihi motuhake, tae atu ki ngā roopu whero me te NIR e hiahiatia ana mō te NDVI. He tika ake, he tika ake hoki ngā raraunga e tukuna ana e ngā kāmera maha-tirohanga mō ngā tataunga NDVI ki te whakataurite ki te whakamahi i ngā karāhe motuhake i runga i tētahi kāmera mārama kitea paerewa.

He mea tika kia mōhiotia, mēnā e whakamahia ana he kāmera kua whakarerekētia mō te tātari NDVI, kua whakakapia te tātari ā-roto o te kāmera hei āhei i te hopu NIR, kāore pea e hiahiatia he karāhe arotahi motuhake kua arotauhia mō te hopu mārama NIR.

Hei whakamutunga, kua kitea te hiranga o te NDVI hei taputapu whai hua mō te ahuwhenua, e āhei ai ngā kaimahi pāmu ki te whiwhi māramatanga nui ki te hauora o ngā hua, ki te arotau i te whakahaere rauemi, me te whakatau i ngā whakataunga e ahu mai ana i ngā raraunga. I te piki haere tonu o te hiahia mō te tātari NDVI tika me te whai hua, he mea nui kia whai taputapu pono e hopu ana i ngā whānuitanga hihi e tika ana me te tino tika.

I ChuangAn, e mārama ana mātou ki te hiranga o te hangarau whakaahua kounga teitei i roto i ngā tono NDVI. Koia mātou e whakahīhī ana ki te whakauru i ā mātouArotahi NDVIesHe mea hanga motuhake mō te whakamahinga ahuwhenua, ā, he mea hanga tā mātou karu hei hopu i ngā whitiki whero me te tata-whero me te tino tika me te mārama.

Te tahuritanga o te kāmera NDVI

Mā te whakamahi i ngā karu tirohanga matatau me ngā paninga arotahi matatau, ka whakarite tā mātou arotahi NDVI kia iti te whakapōturitanga o te mārama, ka tukuna he hua pono me te ōrite mō ngā tataunga NDVI. Nā tōna hototahi ki ngā momo kāmera me tōna ngāwari ki te whakauru, he mea pai tēnei mō ngā kairangahau ahuwhenua, ngā tohunga ahuwhenua, me ngā kaimahi pāmu e hiahia ana ki te whakapai ake i tā rātou tātaritanga NDVI.

Mā te arotahi NDVI a ChuangAn, ka taea e koe te whakamahi i te pūmanawa katoa o te hangarau NDVI, ka taea ai e koe te whakatau whai whakaaro mō te whakahaere whakamakuku, te tono tongi, te kimi mate, me te arotau i te hua. Wheakohia te rerekētanga o te tika me te mahi me ā mātou arotahi NDVI hou.

Ki te hiahia koe ki te ako atu mō te arotahi NDVI a ChuangAn, me te tūhura me pēhea e whakarei ake ai i tō tātaritanga NDVI, tirohia tā mātou paetukutuku.https://www.opticslens.com/ndvi-lenses-product/.

Kōwhiria a ChuangAnNgā karaihe NDVIā, kia eke tō aroturukitanga me tō tātaritanga ahuwhenua ki ngā taumata hou. Tirohia he ao o ngā mea ka taea me ā mātou hangarau whakaahua matatau.