Miljøstatistikk 1978: Naturressurser og forurensninger - SSB
Miljøstatistikk 1978: Naturressurser og forurensninger - SSB
Miljøstatistikk 1978: Naturressurser og forurensninger - SSB
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
20<br />
Pollution<br />
3. WATER (cont.)<br />
Page<br />
3.17. Phosphorus loading in relation to average depth of lakes. 1976 137<br />
3.18. Areas where fish populations have been affected by acid water. 1976 118<br />
3.19. A survey of the state of pollution of some major water courses and fjords in Southern<br />
Norway 119<br />
3.20. A survey of the state of pollution of some major water courses and fjords in Northern<br />
Norway 120<br />
3.21. A rough survey of the state of pollution in areas not covered on figure 3.19 121<br />
3.22. A rough survey of the states of pollution in areas not covered on figure 3.20 122<br />
Changes in water quality<br />
3.23. Changes in pH-levels of lakes in Southern Norway from various periods during 1923-1969<br />
to the period 1970-1976 123<br />
3.24. The distribution of algae in the Oslo Fjord. 1943-1946, 1962-1965 and 1974 124<br />
4. AREA<br />
Total area. Physical conditions<br />
4.1. Height above sea level 128<br />
4.2. The extent of productive coniferous forest 129<br />
Present land use<br />
4.3. Agricultural area per inhabitant. 1977. County 138<br />
4.4. Main use of land areas as a percentage of total areas 1977 140<br />
4.5. Land use in some urban settlements as a percentage of net area. 1974 140<br />
Changes in land use<br />
4.6. Change in agricultural area 1939-1977 as a percentage of agricultural area in 1939.<br />
County 144<br />
4.7. Change in cultivated area 1939-1977 as a percentage of cultivated area in 1939. County 144<br />
4.8. Agricultural area disposed for building sites, roads etc. as a percentage of total<br />
disposed agricultural area. 1959-1969. Holdings with 5 decares or more agricultural<br />
area in use. County 147<br />
4.9. Fully and surface cultivated area transferred 1965-1976 to non-agricultural purposes<br />
according to the Agricultural Act and to the Building Act. Per cent of agricultural area<br />
in 1969. County 147<br />
Nature areas and localities protected according to the act concerning nature conservancy<br />
4.10. National parks in Norway. <strong>1978</strong> 150<br />
5. PLANTS<br />
Agricultural crops<br />
5.1. Crop area and yield per decare of grains and dry peas. Average per year 156<br />
5.2. Crop area and yield per decare of meadows for mowing. Average per year 156<br />
5.3. Crop area and yield per decare of potatoes. Average per year 156<br />
5.4. Crop area and yield per decare of fodder roots. Average per year 156<br />
5.5. Use of the agricultural area. 1977. County 158
Change language