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Fu Bojie (Research Centre for Eco-Environmental Science ,Chinese Academy of Sciences,Beijing, 100085)  
he agricuitural landscape is a mosaic of natural and human-managed patches that varyin size,shape and arrangement.These spatial patterns in the landscape may influence a vari-ety of ecological phenomena. Therefore,the analysis of landscape spatial patterns is an important component of understanding ecological dynamics. A geographic information system(GIS),fractal analysis,and statistical methods were used to examine the spatial patterns ofagricultural landscape in the loess area of China. 1:10000 land use map of study area was dig-itized for analysis,ten land use categories were included:irrigated farmland,check-dam farm-land,terrace farmland,slope farmland,orchard,grassland,bush,forest,reservoir and residen-tial land.The size of patches,fractal dimension of patches,patch elongation index,diversity,dominance,relative richness and fragmentation index of landscapes of gully and between gul-ly were calculated by models and GIS.Along with the increase of patch area,the shapes offarmland and forest patches have a change tendency from simple to complex,the shapes ofgrassland vary at random. Finally,a suggestion to plant buffer on the zones between hilI topand hill slope and hill slope to gully slope was put forward so as to control soil erosion andimprove landscape connectivity.
【Fund】: 国家自然科学基金
【CateGory Index】: P901
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