Iyo molecular oxygen yakanyungudutswa mumvura inonzi okisijeni yakanyungudika uye inowanzonzi D0. Huwandu hweokisijeni yakanyungudika mumvura yepamusoro ndeye 5-10mg/L. Kana paine mhepo ine simba nemafungu, iyo yakanyungudika okisijeni mumvura inogona kusvika 14mg/L. Yakanyungudutswa oksijeni saturation = yakayerwa kukosha kweokisijeni yakanyungudika / yakanyungudika kuzara kweokisijeni pasi pemamiriro akayerwa * 100%, kureva, 90% uye pamusoro, kukosha kwakayerwa kuri pamusoro pe7.5 mg/L, uye shoma i2 mg/L.
Low-oxygenmvuraichapfuura nemuzvirimwa uye kubvisa okisijeni kubva kumidzi. Saizvozvowo, inopedza okisijeni muvhu. Zvirimwa zvine hutano uye maruva evhu ane hutano zvinoda oxygen muzvikamu zviviri izvi.
Kushaikwa kweokisijeni yakanyungudika mumvura kunogona kukonzera mamwe matambudziko. Semuenzaniso, nematodes senge hypoxic ivhu. Kudiridza zvirimwa nemvura yakaderera-okisijeni kuchavaunza pedyo nepamusoro uye kukuvadza nyore nyore midzi yemiti.
Zvidzidzo zvakaratidza kuti kuderedza kuwanda kweokisijeni yakanyungudika mumidzi yezvirimwa kunoderedza kugona kwezvirimwa kutora nitrogen nemvura. Kushaikwa kweokisijeni kunogona kukuvadza midzi. Mukuita kuchinjika kune yakaderera kuwanda kweokisijeni yakanyungudika, iyo metabolism yezvirimwa yachinja. Hypoxia mukati mechirimwa inonzi internal hypoxia. Imwe yemhedzisiro ndeyekuora kwe sucrose, uye zvidyarwa zvinotendeukira kune nzira dzekuchengetedza simba kutsiva kushaikwa kweokisijeni.
Iyo photosynthesis ye phytoplankton ndiyo huru yeokisijeni mumadziva, kazhinji inoverengera 56% -80% yenzvimbo yeokisijeni; iyo yakasara inobva kumhepo inovhuvhuta uye masaisai, kuitira kuti okisijeni mumhepo inonyungudika zvakananga mukatimvura. Yakanakira 12-14mg/L
Heilongjiang: A 600-square-mitadziva rekupisa rinogona kuwedzera tembiricha yemvura ne3 kusvika 4 madhigirii uye kuwedzera kugadzirwa kwezviyo ne6%.