10 con song lon tren the gioi dang bi de doa

Nguon song cua hang trieu nguoi dan chau A dang bi de doa nghiem trong. Hom qua, Qui Bao ve thien nhien WWF da ra canh bao ve tinh trang 10 con song lon tren the gioi, trong do co song Nile, Rio Grande, Danube, Truong Giang, Mekong, Salween, song Hang, song An, co nguy co bi can kiet do tinh trang qui hoach kem va thieu duoc bao ve.

Hien tai, song Truong Giang o Trung Quoc, do hau qua cua hang chuc nam cong nghiep hoa, xay dung dap thuy dien, tro thanh mot trong nhung dong song o nhiem nhat tren the gioi. Trong khi do, tinh trang khai thac ca qua muc lai dang dien ra o song Mekong. Nuoc cua rat nhieu con song nhu song An, song Hang o chau A, song Nile o chau Phi hien gio khong the chay ra toi bien duoc nua. Cac con dap lon da huy hoai moi truong song va cat dong song ra khoi luu vuc chay quen thuoc. Tinh trang khi hau thay doi cung co the anh huong toi qui luat da co hang ngan nam nay cua cac dong song.

Viec cac con song kho han co the anh huong toi nguon cung cap nuoc ngot va doi song cua cac loai thuy sinh cung hang trieu nguoi o vung ha luu se bi anh huong. Luong ca o cac song ngoi, nguon cung cap protein va dinh duong cho hang tram ngan cong dong tren khap the gioi hien cung bi de doa boi tham hoa nay. WWF keu goi cac chinh phu nhanh chong co bien phap quan ly tot hon cac nguon nuoc chung de giam thieu cac thiet hai cua tinh trang nay.

Song Danube (Anh: webshots)