Abstract:

Landscape configuration optimization of large forest site in urban or suburbs area,which is usually identified as one of the most important components of urban ecological frameworks,will improve the structure and function of urban ecosystem.The Jiufeng Urban Forestry Reserve is the largest forest landscape in Wuhan suburbs.Using the Quick Bird remote imagery accompanied with the field survey,the landscape patterns of the Jiufeng Urban Forestry Reserve were analyzed based on RS/GIS technique and the spatial optimization strategies of the forest landscape were also discussed.The results showed that,the landscape with 263 patches could be classified into nine landscape types,including woodland,farmland,nursery,waters,construction site,cemetery,wasteland,grassland and uncovered rock.Among these landscape types,woodland was the largest landscape category,accounting for 3656% of the research region area and 875% of the total patch number.It is the landscape matrix,but with low dominance.The shape of construction site and farmland were most complex,having the great potential to enhance the spread of human disturbance.The woodland had a concentrated distribution with low fragmentation and high connection,which would benefit the resource protection and utilization.On the whole, the landscape pattern of the Jiufeng Urban Forestry Reserve showed the characteristics of simple overall structure and complex local structure.The landscape optimization countermeasures,including extending woodland area,decreasing construction site and other human dominated categories area,formatting aggregatewithoutliner pattern,redeveloping vegetation of wasteland and uncovered rock,developing stepstone patches and protection forest corridors,were put forward according to the current landscape feathers.These measures would provide a guide line for planning and management of the Jiufeng Urban Forest Reserve.

Key words: landscape pattern/spatial configure/landscape grain/landscape planning/ Jiufeng Urban Forest Reserve