摘 要: | As early as the beginning of the 20th century, Dr. Sun Yat-sen commented that "Nanjing is a very charming and nice place which boasts of high mountains, deep water and the plateau. These three kinds of endowments bestowed by heaven are incorporated with the city and it is indeed difficult to find such beautiful scenery among big cities in the world." These natural endowments have resulted in an ecologi-
|