التأثير البايلوجي على القطع الأثرية في التربة

الملخص EN

The biological effect is a factors affecting on archaeological pieces including damage which occurs by microorganisms specifically bacteria, the fertile soil is a good environment for a large group of microorganisms, The role of bacteria in soil is the transformation of organic compounds of carbon, nitrogen, phosphorus and sulfur into simple organic elements soil damage by microorganisms is caused by the pressure generated by the growth of bacteria in the soil which penetrates its activity into the stone and chemical reaction of microorganisms include the production of known metabolic products which are organic and inorganic acids that interact with the substrate composed of salts, biodegradation is controlled indirectly by controlling conditions including temperature, humidity, nutrients and light or direct method include mechanical methods and physical methods.