Abstract:This paper has evaluated the land potential for the greenbelt construction between the fifth and the
sixth ring roads. First, the present land cover characteristics were analyzed through the extraction from TM image,
and the existing landscape structure and pattern were studied. Then, the land potential for developing greenbelt was
evaluated based on the present land cover. The assessment results show that the present landscape pattern provides
some potential for greenbelt development. On the one hand, several important transportation routes pass the
greenbelt, which might act as an axe and help formulate the wedge-shape greenbelt. On the other hand, there still
exists large proportion of undeveloped land resource that might be used to develop green elements. Totally, all the
undeveloped land resources possess some 60% of the whole area. However, all the developed and undeveloped lands are
not well regulated. Especially in the developed built-up areas, the size, pattern and future developing tendency
fail to meet the demand of urban greenbelt development. It is very important to regulate existing land uses,
increase land use efficiency, reduce land development, and preserve some lands for green elements development. All
these measures seem to constitute the most difficult tasks in greenbelt implementation.