Spatial Pattern Analysis of the Vegetation Landscape In Tangjiahe Nature Reserve

Based on the vegetation map,the spatial pattern of vegetation landscape of Tangjiahe Nature Reserve in Longmen Mountains was analyzed by using GIS and Fragstats.The results show that the situation of vegetation development is good in the nature reserve,and the broad-leaved forest and the coniferous forest are main two compositions of the forest landscape due to their bigger total distribution area(91.65%);that evergreen broad-leaved and deciduous broad-leaved mixed forest is the background of the area because of its biggest distribution area inlaid with other vegetation patches;and that together with the coniferous and broad-leaved mixed forest,the deciduous broad-leaved forest and the sub-alpine coniferous forest,evergreen broad-leaved and deciduous broad-leaved mixed forest make up the four dominating vegetation landscape elements in the reserve,which are of the lowest heterogeneity degree for its smallest area,lowest patch number and less disintegration.Compared with other reserves,high species richness,dominance and diversity,typical dominant vegetation and low level of fragmentation are found to be the main features of the vegetation landscape in this reserve.