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Tot-P µg/l<br />
挪 威 Lake Mjøsa 湖 ,365km 2<br />
从 1970 年 严 重 污 染 到 30 年 后 恢 复 到 非 常 好 的 状 态<br />
16<br />
Middelkonsentrasjon From strongly polluted av Tot-P i Mjøsa, in 1970 juni-oktober, very 0-10m. good after 30<br />
Skreia<br />
years…<br />
2009<br />
14<br />
12<br />
10<br />
8<br />
6<br />
4<br />
2<br />
Lake Mjøsa<br />
Average Tot-P concentration in<br />
the epilimnion in the summer<br />
season for different years<br />
Målsetting<br />
< 5,5-6,5<br />
0<br />
72 74 76 78 80 82 84 86 88 90 92 94 96 98 .00 .02 .04 .06 .08 .10<br />
juni juli aug sept okt nov
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