Research on Urban Forest Development in Xuzhou

Such theories as plant distribution theory,ecological succession theory,biodiversity theory and landscape structure theory on which urban forest building is based are discussed.Based upon the field survey material,the classification system of the forest vegetation on hills in Xuzhou is established,including 2 vegetation type groups,3 vegetation types,3 vegetation subtypes,6 formation groups and 12 formations(i.e.,Pinus densiflora forest,Pinus thunbergii forest,Platycladus orientalis forest,Robinia pseudoacacia forest,Pistacia chinensis + Dalbergia hupeana forest,Pteroceltis tatarinowii forest,Celtis bungeana forest,Carpinus turczaninowii forest,Quercus acutissima forest,Quercus variabilis forest,Quercus fabri forest and Quercus variabilis + Machilus thunbergii forest).According to the effects of light intensity on forest edificators,the successional relationships among the 12 formations are analyzed,and the secondary succession model of the forest vegetation on hills in Xuzhou is built.Guided by the above results,the development strategies about urban hill forest,urban street forest and urban garden/park in Xuzhou are put forward.