因此，把城市当作生态系统来研究日益必要，城市生态系统研究也就成为一个热点，这也是从生态学角度来研究城市问题的一种新思维方式。

So, it is essential to regard cities as ecosystems, and the research of urban ecosystem (UES) becomes a research focus. This also is a new thinking mode of studying city problems from ecology Angle.

youdao

因此，把城市当作生态系统来研究日益必要，城市生态系统研究也就成为一个热点，这也是从生态学角度来研究城市问题的一种新思维方式。

So, it is essential to regard cities as ecosystems, and the research of urban ecosystem (UES) becomes a research focus. This also is a new thinking mode of studying city problems from ecology Angle.

youdao