With China's sustained and rapid economic development， the accelerating process of urbanization， China's urban rail transit construction has entered a rapid development Urban rail transit is to promote urban economic development， improve the urban ecological environment， optimize the urban structure， the key to achieving sustainable urban We track the traffic the site is divided into residential-type， central hub and three categories， combined with the widely used abroad TOD model， classification of the regional rail transit site development intensity and spatial distribution， and rail traffic on the surrounding economy of On this basis， Huadu， Guangzhou Metro Line 9 to the site to set the initial planning studies， and its economic impact on the Huadu District of major 如果是论文的摘要翻译的话，不用太较真差不多就行没人会仔细看祝你好运~
