E hoʻopiha i ka palapala ma lalo nei a e leka uila mākou iā ʻoe i kahi mana PDF o Riverside Soils He kumu nui o ka hoʻohaumia ʻana i ka Nitrate.
ʻO nā nitrates e hōʻiliʻili i ka lepo ma kahi kokoke i nā muliwai he mea nui i ka hoʻonui ʻana i nā pae nitrate i ka wai o ka muliwai i ka wā ua, hōʻike nā mea noiʻi mai ke Kulanui ʻo Nagoya ma Iapana.ʻO kā lākou mau ʻike, i paʻi ʻia ma ka puke pai ʻo Biogeoscience, hiki ke kōkua i ka hōʻemi ʻana i ka pollution nitrogen a hoʻomaikaʻi i ka maikaʻi o ka wai i nā kino wai o lalo e like me nā loko a me nā wai kahakai.
He meaʻai koʻikoʻi nā Nitrates no nā mea kanu a me nā phytoplankton, akā hiki i nā kiʻekiʻe o nā nitrates i loko o nā muliwai ke hoʻohaʻahaʻa i ka maikaʻi o ka wai, alakaʻi i ka eutrophication (hoʻonui nui ʻana i ka wai me nā meaʻai), a hiki ke pilikia i ke olakino holoholona a me ke kanaka.ʻOiai ua ʻike ʻia ka piʻi ʻana o ka nui o ka nitrate ma nā kahawai i ka wā ua, ʻaʻole maopopo ke kumu.
ʻElua mau manaʻo nui e pili ana i ka piʻi ʻana o ka nitrate i ka wā ua.Wahi a ka manaʻo mua, hoʻoheheʻe ʻia nā nitrates ea i ka wai ua a komo pololei i nā kahawai.ʻO ka manaʻo ʻelua, ʻo ia ka wā ua, komo nā nitrates lepo ma kahi e pili ana i ka muliwai, i kapa ʻia ʻo ka riparian zone, komo i ka wai o ka muliwai.
No ka noiʻi hou ʻana i ke kumu o nā nitrates, ua alakaʻi ʻia kahi hui noiʻi e alakaʻi ʻia e Professor Urumu Tsunogai o ke kula puka kula ʻo Environmental Studies, me ka hui pū ʻana me ka Asian Center for Air Pollution Research, i hana i kahi noiʻi no ka nānā ʻana i nā loli i ka haku ʻana o nā isotopes nitrogen a me oxygen. nitrates a i ka wā ua nui.ʻO ka hoʻonui ʻana i ka nui o nā nitrates ma nā kahawai.
Ua hōʻike nā haʻawina mua i ka piʻi nui ʻana o ka nui o ka nitrate i ka wā o ka ʻino i loko o kahi kahawai i uka o ka muliwai Kaji ma Niigata Prefecture ma ke komohana ʻākau o Iapana.Ua hōʻiliʻili nā mea noiʻi i nā laʻana wai mai ke kahawai ʻo Kajigawa, me nā kahawai i uka o ka muliwai.I loko o ʻekolu ʻino, ua hoʻohana lākou i nā autosamplers e hoʻāʻo i nā kahawai wai i kēlā me kēia hola no 24 mau hola.
Ua ana ka hui i ka hoʻokumu ʻana a me ka hana isotopic o nā nitrates i loko o ka wai o ke kahawai, a laila hoʻohālikelike i nā hopena me ka hoʻokumu ʻana a me ka hana isotopic o nā nitrates i ka lepo ma ke kahakai kahakai o ke kahawai.ʻO ka hopena, ua ʻike lākou ʻo ka hapa nui o nā nitrates mai ka lepo a ʻaʻole mai ka wai ua.
"Ua hoʻoholo mākou ʻo ka holoi ʻana i nā nitrates ʻāina kahakai i nā kahawai ma muli o ka piʻi ʻana o nā kahawai a me ka wai o ka lepo ke kumu nui o ka piʻi ʻana o nā nitrates i nā kahawai i ka wā ʻino," wahi a Kauka Weitian Ding o ke Kulanui o Nagoya, ka mea kākau o ka noiʻi.
Ua kālailai pū ka hui noiʻi i ka hopena o ka nitrate lewa i ka piʻi ʻana o ke kahe o ka nitrate i ka wā ʻino.ʻAʻole i hoʻololi ʻia ka ʻike o nā nitrates lewa i ka wai o ka muliwai, ʻoiai ka piʻi ʻana o ka ua, e hōʻike ana i kahi mana liʻiliʻi o nā kumu o nā nitrates lewa.
Ua ʻike pū ka poʻe noiʻi e hana ʻia nā nitrates lepo kahakai e nā microbes lepo."Ke manaʻoʻiʻo ʻia ʻo nā nitrates o ka microbial kumu e hōʻiliʻili ai i nā ʻāina kahakai i ke kauwela a me ke kauwela wale nō ma Iapana," wahi a Profesor Tsunogai."Mai kēia hiʻohiʻona, hiki iā mākou ke wānana i ka piʻi ʻana o nā nitrates i loko o ka muliwai ma muli o ka ua i kēia mau kau."
Nānā: Dean W, Tsunogai W, Nakagawa F, et al.ʻO ka nānā ʻana i ke kumu o nā nitrates i nā kahawai ululāʻau i hōʻike ʻia i nā ʻano kiʻekiʻe i ka wā o ka ʻino.Biogeoscience.2022;19(13):3247-3261.doi: 10.5194/bg-19-3247-2022
Hoʻopuka hou ʻia kēia ʻatikala mai nā mea aʻe.Nānā.Ua hoʻoponopono ʻia paha nā hoʻouna no ka lōʻihi a me ka ʻike.No ka ʻike hou aku, e ʻike i ke kumu i haʻi ʻia.