The construction and development of suburban district is always one of focal point of city planning research.
Background data of 8 heavy metals in agricultural soils classified according to soil basic categories and limited within a suburban district were studied.
Review history, the United States, advanced nation of the western has gone through repetition and change many times in the course of the construction of city suburban district.
In Miyun, a peaceful and beautiful suburban district of Beijing, there is a grand classic architecture like the Val DE Loire castles, which is the only coordinate on that broad land.
A " large city " means one which has a non-agricultural population of 500, 000 or more in its urban and inner suburban districts.
