Meaning of CONCENTRIC ZONE THEORY:
Emest Burgess a sociologist of Chicago School proposed an ideal type model of urban growth in industrialized societies. He argued that cities take the form of five concentric rings. The innermost ring is the central business district containing most the markets, offices, banks and other serve facilities. The second ring is the zone of transition. As a result it is the run-down area of cheap housing. The third zone contains manual workers. The fourth is the middle class suburb and the fifth is the commuters zone. The real cities do not conform exactly to these five zone model. As criticism against the concentric zone theory Homer Hoyt had suggested the sector model while Harrison Ullman has suggested the multiple nuclei theory.