Characteristics Of Species Diversity Of Plant Communities In Taoping Forest Region On The Xiaolong Mountain

Plants are primary producers in nature,and provide good environment for other organisms to survive and inhabit.They play a very important role in soil and water conservation,regulating temperature and maintaining biosphere ecosystem.In order to characterize the plant community diversity and vegetation in Tao Ping forest of Xiaolong mountain area master.The study used the line transect method and typical plots along different altitudes,setting the typical plots,plant types and community distribution of Tao Ping forest,were investigated and analyzed,respectively,from flora the composition,characteristics and species diversity of plant communities and species diversity and elevation relationship and other aspects of the study.The main results are as follows:1.Survey found,Tao Ping forest has a total of 135 families of seed plants in 545 genera and 1336 species.Among them,there are 1108 species,431 genera and 113 families of dicotyledonous plants;212 species,105 genera and17 families of monotyledonous plants.16 species,9 genera and 5 families of gymnosperms.2.All contained within the number of genera of seed plants in Taoping region differences in the larger.There are 55 families contained only 1 genera,61 families contained 2-5 genera,with 182 genera;and 19 families with 6 genera.There are 36 families includes 1 species,59 families include 2-9 species;24 families include 10-19 species;There are 16 families include more than 20 species.There are 291 species belonging to 1 species,including 2-5 species;204 genera include 2-5 species.There are 50 genera include more than 6 species,and the number of species is 504.3.The main vegetation types of Taoping forest is divided into 11 parts: temperate broad-leaved forest,warm temperate broad-leaved forest,shrub,shrub,warm temperate forest,temperate coniferous forest,warm coniferous forest,cold temperate coniferous forest,forest meadow,alpine shrub,alpine meadow.The index of species richness and diversity in temperate coniferous forest,temperate forest minimum;evenness index in temperate coniferous forest is the highest,but in temperate shrub and alpine meadow minimum;dominance index changes of different vegetation types is basic consistent with richness index.The richness index,diversity index,evenness index and dominance index of different growth types are all the highest in the herb layer,the shrub layer is in the middle,and the tree layer is the lowest.4.With the increase of altitude,the number of species in each plot decreased,the number of species in relatively high altitude 1600-2400 meters,basically more than 30,the number of species at an altitude of between 2400-2900 in more than 20,2900 meters above the number of species is less than 20.The variation of diversity index,evenness index and dominance index also decreased with the increase of altitude.