Ntchito Yofikira:Amagwiritsidwa ntchito kwambiri m'nyanja zazikulu, zosungira, malo, madzi, zimbudzi zamatawuni, kuchotsa eutrophication ya nayitrogeni, phosphorous ndi cyanobacteria.
Ntchito:CNOOC, CNPC, Sinopec, nsanja zobowola mafuta kunyanja, matani opitilira 300000 a pier yamafuta panyanja.