Pošlji prispevek (e-pošta) Analiza vzorcev pridelkov žit in zrnatih stročnic na območju gozda in lesostepe Ukrajine z geografsko tehtano analizo glavnih komponent
Povzetek
Namen prispevka je bil preučiti prostorsko heterogenost pridelkov poljščin iz podatkov zbranih iz 170 administrativnih okrožij na območju gozda in lesostepe Ukrajine v obdobju zadnjih 27 let z uporabo PCA in GWPCA metod. Rezultat analize spremenljivosti pridelkov žit in zrnatih stročnic z analizo glavnih komponent je bila določitev sedmih glavnih component, ki so skupno razložile 66,8 % celokupne variabilnosti pridelkov. Globalna analiza glavnih component je odkrila prisotnost dinamičnih procesov v spremenljivosti pridelkov žit in zrnatih stročnic, ki nihajo z različnimi frekvencami. Oscilatorne procese z različnimi frekvencami povezujemo z različnimi vzroki. Nihajoči procesi s periodo desetih ali več let so lahko povezanimi s podnebjem. Oscilatorni proces z najdalšo period (13 let) je značilen za prvo glavno komponento, ki razloži največji delež nihanja pridelkov žit in zrnatih stročnic (22,6 %). Mogoče je zaključiti, da med agroekološkimi dejavniki sprememba podnebja najbolj vpliva na pridelek poljščin. Klasterska analiza administrativnih območij je bila izvedena na osnovi dinamike spremeljivosti pridelkov žit in zrnatih stročnic. Grozdi so zemljepisno omejena administrativna območja, ki tvorijo skupaj prostorsko povezana območja, ki so označena kot agroekološke cone.
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DOI: http://dx.doi.org/10.14720/aas.2020.116.2.873
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