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Effects of microplastics on selected physical properties of agricultural soils and on the response of the selected terrestrial isopod
Summary
Scientists found that tiny plastic pieces from agricultural films change how soil holds and releases water, with some types increasing available water for plants by about 5%. These microplastics also affect soil creatures that help keep ecosystems healthy. This matters because these plastic particles could be changing how our food is grown and may eventually end up in the crops we eat.
Mikroplastika (MP) je vse pogosteje prepoznana kot pomemben onesnaževalec kmetijskih tal, kjer lahko vpliva na fizikalne in kemijske lastnosti tal, organizme in rastline ter s tem na delovanje agroekosistemov. V doktorski raziskavi smo preučevali vpliv treh vrst MP, pridobljene z mletjem komercialnih zastirnih folij iz polietilena nizke gostote (LDPE), polibutilen adipat tereftalata (PBAT) in škroba, na izbrane fizikalne lastnosti tal, talne organizme in rastline. V laboratorijskih in lončnih poskusih smo ugotovili, da prisotnost MP vpliva na vodoodbojnost tal, pri čemer so bili učinki izrazitejši v peščeno-ilovnatih tleh. Pri višjih koncentracijah PBAT in škrobne MP smo zaznali približno 5 % povečanje rastlinam dostopne vode, kar kaže na teksturno specifične odzive tal. Prisotnost MP v tleh je posredno vplivala na kopenskega enakonožca Porcellionides pruinosus preko sprememb mikrookolja
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