مقايسه تنوع گونه اي و فراواني فلوركف جنگل در مناطق جنگل كاري سوزني برگان و جنگل طبيعي پهن برگ در لاجيم مازندران

Comparison of diversity and abundance in flora plants natural hardwood and plantation softwood in lajim in Mazandaran

For compare of diversity and species abundance flora plants in natural hardwood and softwood selected two stands in two areas. This areas located in lajim of Mazandaran in 35km souths of Sari. This stands have 8 hectar areas which of stands plantes Norway spruce (Picea abies) in 1963 and other stand is including natural hardwood with species such as Anus subcordata, parrotia persica, Fagus orientalis. The height of sea surface 850-950m, slope is 10-40% with south and westsouth aspect. The texture of soil is heavy and semi - heavy (Clay, loam, Clay-Loam) with median and hith deep. Mean annual rainfall average 1300 mm and climate is cool-humid, For compare of diversity in two area were used to shannon index diversity. In these areas were used 10 quadrat 10*10m with random sampling for diversity assesment and In each quadrats species number of species and individuals species determinated. The results shwed that shanon index diversity were - 1.922 in natural hardwood forest and 1-3697 in plantation of Norway spruce. Floor diversity in hardwood is higher in compare with plantation Norway. By using of. test distinguished which difference of diversity between plantation Norwar spruce and natural hardwood were significant, species abundance was higher in plantation Norway spruce. Equatability index wer 0.835 in natural hardwood and 0.705 in plantation Norway spruce.