In order to probe the basis of determining orientation for managing the shelterbelt net-works on large scale by measuring and evaluating the spatial pattern of the network in land-scape,the landscape indexes that are appropriate to describe quantity,distribution,and in-tegrity of the networks are studied on the basis of Landscape Ecology.The indexes,ratio ofbelt to patch,dominance,connectivity,and ring,are defined as fitting in with the needs ofmeasuring the spatial pattern of the networks in landscape.The m...