Stručni rad
THE IMPORTANCE OF SOIL IN NATURAL ANDAGROECOLOGICAL SYSTEMS: PRESENT-DAY PROBLEMSOF SOIL CONSERVATION
Zoltan Racz
; Fakultet poljoprivrednih znanosti, Zagreb
Sažetak
The essay tells of new domestic and foreign achievements and experiences in protecting soils and environment. The unpublished data of the author and his assistants' work are used here, but were also expressed during discussions at working meetings - they have been prepared for the international project "Long-term risks of environment on soils, underground waters and sediments in the Danube and its affluent area" which has been initiated by the Netherlands Foundation for Environmental Development.
At the beginning of the essay, global problems of food production and definition of agricultural and ecological systems as well as the connection with the social ecology were introduced. Then, there followed a survey of new conceptions on the role of soil in nature, and new ideas on "the chemical time bomb" as well as on the "vulnerability" of soil in connection with the above mentioned project. Then, we continued with the enumeration of parameters and the estimation of long-term risks on the examples of acidification of soil, its contamination with heavy metals, of pollution of water by nitrates and phosphorous compounds, and finally the short survey of other damages on soils in areas and terrains in the world as in our country. The final chapter points to the necessary holistic approach and cross disciplinarian research work, to the long-term stationary surveying of soil changes and of other components of ecological system of local importance, and finally, an acute need to form appropriate data computer processing programs was stated.
Ključne riječi
soil; natural and agroecological systems; chemical time bombs; vulnerability of soil
Hrčak ID:
136633
URI
Datum izdavanja:
15.1.1992.
Posjeta: 1.288 *