ʻO ka oxygen molekala i hoʻoheheʻe ʻia i loko o ka wai ua kapa ʻia ʻo ia he oxygen hoʻoheheʻe ʻia a ua kapa pinepine ʻia ʻo D0. ʻO ka nui o ka oxygen i hoʻoheheʻe ʻia i loko o ka wai ʻili he 5-10mg/L. Ke loaʻa nā makani ikaika a me nā nalu, hiki i ka oxygen i hoʻoheheʻe ʻia i loko o ka wai ke hiki i 14mg/L. ʻO ka saturation oxygen i hoʻoheheʻe ʻia = ka waiwai i ana ʻia o ka oxygen i hoʻoheheʻe ʻia/ka saturation oxygen i hoʻoheheʻe ʻia ma lalo o nā kūlana i ana ʻia * 100%, ʻo ia hoʻi, 90% a ʻoi aku, ʻoi aku ka waiwai i ana ʻia ma luna o 7.5 mg/L, a ʻo ka liʻiliʻi loa he 2 mg/L.
Haʻahaʻa ka oxygenwaie hele ma waena o nā mea kanu a wehe i ka oxygen mai ke aʻa. Pēlā nō, e hoʻopau ia i ka oxygen i loko o ka lepo. Pono nā mea kanu olakino a me nā flora lepo olakino i ka oxygen ma kēia mau ʻāpana ʻelua.
ʻO ka nele o ka oxygen i hoʻoheheʻe ʻia i loko o ka wai hiki ke hana i nā pilikia ʻē aʻe. No ka laʻana, makemake nā nematodes i ka lepo hypoxic. ʻO ka hoʻoinu ʻana i nā mea kanu me ka wai oxygen haʻahaʻa e lawe mai iā lākou a kokoke i ka ʻili a hōʻino maʻalahi i nā aʻa o nā mea kanu.
Ua hōʻike ʻia nā haʻawina e hōʻemi ana ka hoʻemi ʻana i ka nui o ka oxygen i hoʻoheheʻe ʻia i loko o ke aʻa o nā mea kanu i ka hiki o nā mea kanu ke omo i ka naikokene a me ka wai. Hiki i ka nele o ka oxygen ke hōʻino i nā aʻa. I ke kaʻina hana o ka hoʻololi ʻana i nā haʻahaʻa o ka oxygen i hoʻoheheʻe ʻia, ua loli ka metabolism o nā mea kanu. Ua kapa ʻia ʻo Hypoxia i loko o ka mea kanu he hypoxia kūloko. ʻO kekahi o nā hopena, ʻo ia ka hōʻino ʻia o ka sucrose, a huli nā mea kanu i nā ʻano mālama ikehu e uku no ka nele o ka oxygen.
ʻO ka photosynthesis o ka phytoplankton ke kumu nui o ka oxygen i loko o nā loko, ʻo ia hoʻi he 56%-80% o ke kumu oxygen; ʻo ke koena mai ka makani a me nā nalu e puhi ana, no laila ua hoʻoheheʻe pololei ʻia ka oxygen i ka lewa i loko o ka wai.wai12-14mg/L ka maikaʻi
Heilongjiang: He 600-pāhāhā-mikaHiki i ka loko ʻili ke hoʻonui i ka mahana o ka wai ma 3 a 4 degere a hoʻonui i ka hana palaoa ma 6%.