Umwuka wa ogisijeni ushonga mu mazi witwa ogisijeni yashonze kandi ubusanzwe witwa D0.Ingano ya ogisijeni yashonze mumazi yo hejuru ni 5-10mg / L.Iyo hari umuyaga mwinshi numuraba, ogisijeni yashonze mumazi irashobora kugera kuri 14mg / L.Umwuka wa ogisijeni wuzuye = wapimye agaciro ka ogisijeni yashonze / yuzuze ogisijeni yuzuye mu bihe byapimwe * 100%, ni ukuvuga 90% no hejuru, agaciro gapimwe kari hejuru ya 7.5 mg / L, naho byibuze ni 2 mg / L.
Umwuka wa ogisijeniamaziizanyura mu bimera ikure ogisijeni muri sisitemu yumuzi.Mu buryo nk'ubwo, bizagabanya umwuka wa ogisijeni mu butaka.Ibimera bizima hamwe nubutaka bwiza bwibimera bikenera ogisijeni muribi bice byombi.
Kubura ogisijeni yashonze mumazi birashobora kandi gutera ibindi bibazo.Kurugero, nematode nkubutaka bwa hypoxic.Kuvomera ibimera n'amazi ya ogisijeni make bizabegereza hejuru kandi byangiza byoroshye imizi yibiti.
Ubushakashatsi bwerekanye ko kugabanya ubukana bwa ogisijeni yashonze mu mizi y’ibimera bizagabanya ubushobozi bw’ibimera byo gufata azote n'amazi.Kubura ogisijeni birashobora kwangiza imizi.Muburyo bwo guhuza nubushyuhe buke bwa ogisijeni yashonze, metabolism yibimera yarahindutse.Hypoxia imbere mu gihingwa yitwa hypoxia y'imbere.Imwe mu ngaruka ni iyangirika rya sucrose, kandi ibimera bihindura uburyo bwo kuzigama ingufu kugirango bishyure kubura ogisijeni.
Fotosintezeza ya phytoplankton nisoko nyamukuru ya ogisijeni mu byuzi, muri rusange ikaba 56% -80% by isoko ya ogisijeni;ahasigaye bituruka kumuyaga uhuha hamwe numuraba, kuburyo ogisijeni yo mu kirere ihita ishonga muriamazi.Ibyiza 12-14mg / L.
Heilongjiang: kare-600-meteroicyuzi cya tanning gishobora kongera ubushyuhe bwamazi kuri dogere 3 kugeza kuri 4 no kongera umusaruro wingano kuri 6%.