,newly generated,dissolved,expansion,shrinking,fusion,division,and multiformity were distinguished,and the patch-specific patterns for the major types along the urban-rural gradient zones were studied with buffering analysis.

Moreover,the areas of the two kinds of hotspots declined with the distance along the urban-rural gradient.

Hefei should thread up the theme of "the great environment,the grand construction,and development",adapt the urban space development layout of "1-4-1",and carry out the policy of urban areas helping rural areas to.

The mechanism of urban areas helping rural areas has rich content,which means setting up the long stable urban-areas-guiding-rural-areas systems for fiscal transfer,factor conveyer,industry driving and function radiation in accordance with the objective requirements of market rule and economic development law through the system of reform and innovation.

Extent effect of landscape gradient analysis of urban-rural transect;