Okisijeni yemolekyuri yakanyungudutswa mumvura inonzi okisijeni yakanyungudutswa uye inowanzo nyorwa kuti D0. Huwandu hweokisijeni yakanyungudutswa mumvura yepamusoro i5-10mg/L. Kana paine mhepo ine simba nemafungu, okisijeni yakanyungudutswa mumvura inogona kusvika 14mg/L. Kuwanda kweokisijeni yakanyungudutswa = chiyero chakayerwa cheokisijeni yakanyungudutswa/chiyero cheokisijeni yakanyungudutswa pasi pemamiriro akayerwa * 100%, kureva kuti, 90% zvichikwira, chiyero chakayerwa chiri pamusoro pe7.5 mg/L, uye chiyero chidiki i2 mg/L.
Okisijeni shomamvuraichapfuura nepakati pemiti yobvisa okisijeni kubva mumidzi. Saizvozvowo, ichapedza okisijeni iri muvhu. Zvirimwa zvine hutano nemiti yevhu ine hutano zvinoda okisijeni muzvikamu zviviri izvi.
Kushaikwa kweokisijeni yakanyungudika mumvura kunogona kukonzerawo mamwe matambudziko. Semuenzaniso, nematodes dzinofarira ivhu risina oxygen yakawanda. Kudiridza zvirimwa nemvura isina oxygen yakawanda kunozviswededza pedyo nepamusoro uye zvinokanganisa midzi yezvirimwa zviri nyore.
Ongororo dzakaratidza kuti kuderedza kuwanda kweokisijeni yakanyungudutswa mumidzi yemiti kunoderedza kugona kwemiti kupinza nitrogen nemvura. Kushaikwa kweokisijeni kunogona kukuvadza midzi. Mukati mekuchinjika kune huwandu hwakaderera hweokisijeni yakanyungudutswa, metabolism yemiti yakachinja. Hypoxia iri mukati memiti inonzi internal hypoxia. Imwe yemhedzisiro ndeyekuora kwesucrose, uye zvirimwa zvinoshandisa nzira dzekuchengetedza simba kuti zvitsive kushomeka kweokisijeni.
Kugadzira okisijeni mu phytoplankton ndiko kunobva okisijeni mumadziva, kazhinji kacho kunosvika 56%-80% ye okisijeni; imwe yose inobva mumhepo inovhuvhuta nemafungu, zvekuti okisijeni iri mumhepo inonyungudutswa zvakananga mumvuraInobatsira 12-14mg/L
Heilongjiang: A 600-square-mitadziva rekuchenesa ganda rinogona kuwedzera tembiricha yemvura nemadhigirii matatu kusvika mana uye kuwedzera kugadzirwa kwezviyo ne6%.