Re: Mie^`n Ta^y tru` phu'

[Tuan V Nguyen <t.nguyen@garvan.unsw.edu.au>]

Cha`o ba'c Huy,

>Hi`nh nhu+ la` GNP va` cultivated land/capita cua? Bangladesh cu~ng tu+o+ng
>-du+o+ng vo+'i Vie^.t Nam (co' le~ ho+i cao ho+n), pha?i kho^ng?

        Ca'i na`y to^i ho+i nghi nghi a` . VN la`m sao ma` nghe`o ho+n
Bangladesh ddu+o+.c? Nhu+ng statistics co' the^? dismiss to^i easily!

>-Die^`u tra cua? vie^.n Pasteur ta.i Ca'i Be` na<m 1996 cho tha^'y
>pha^n bo^' cua? ca'c loa.i nha` ve^. sinh la` nhu+ sau:
>
>1) NVS tre^n so^ng     59%,
>2) NVS ao ca'          37%,
>
>co' nghia~ la` hai loa.i NVS na`y la` 96% cua? mo.i loa.i. 
>Hai loa.i NVS na`y ga^y o^ nhie^~m cho nu+o+'c so^ng (loa.i 2
>ga^y o^ nhie^~m vi` co the^? -du+o+.c tho^ng ta so^ng/ra.ch hay khi bi. 
>lu.t). Ke^'t qua? la` ma^.t -do^. fecal coliform ta.i giu+~a do`ng
>so^ng ta.i Ta^n Cha^u (no+i so^ng Ha^.u va`o Vie^.t Nam?) la` 2,900/l,
>o+? ga^`n bo+` thi. tra^'n la` 360,000/l--o^ nhie^~m na<.ng ga^'p
>124 la^`n. Khi Long Xuyen co`n ca'c nha` ve^. sinh co^ng co^.ng tre^n
>ca'c be` ca' thi` ma^.t -do^. fecal coliform ga^`n ca'c be` ca' na`y
>la` 4,600,000/l--ga^'p 1,600 la^`n o+? Ta^n Cha^u. Ca'c vi tru`ng 
>-du+o+`ng ruo^.t -de^`u so^'ng -du+o+.c tre^n 1 tha'ng trong nu+o+'c
>ne^n di chuye^?n ra^'t xa.
>
>Tuy va^.y, cuo^.c -die^`u tra na`y cu~ng cho tha^'y nu+o+'c so^ng
>la` nguo^`n nu+o+'c sinh hoa.t cua? 91% da^n so^', va` co' 25% uo^'ng
>nu+o+'c so^ng kho^ng -dun so^i.
>
>Aaaiii -di ta<'m so^ng kho^o^o^ng?

        To^i khoa'i ba'c Huy na`y: no'i gi` cu~ng co' ba(`ng chu+'ng con
so^' ma` co`n pha^n ti'ch ro~ ra`ng nu+~a chu+'. Nhu+ng ca'i va^'n dde^` ma`
ba'c no'i ra la` mo^.t trong nhu+~ng ddie^`u nhu+'c nho^'i, nhu+'c dda^`u
cu?a nhu+~ng ngu+o+`i la`m co^ng ta'c mo^i tru+o+`ng. Cu~ng ca^`n pha?i ca?
va`i mu+o+i na(m may ra mo+'i ca?i thie^.n ddu+o+.c. Co`n ba^y gio+` thi`
... well kho' no'i qua' :) Ne^'u mi`nh no'i ba` con ne^n ddi ca^`u theo
kie^?u xyz, thi` ma^'y o^ng ba` lie^`n no'i la` "tao so^'ng nhu+ va^`y ca?
ma^'y mu+o+i na(m nay, co' che^'t cho'c ai dda^u, ma`y con ni't ba`y
chuye^.n lo^.n xo^.n" (dda.i the^? nhu+ va^.y).  Kho^? la('m!

        Tua^'n