Investigation Of Main Grassland Types And Soil In Anhui Province

According to the factors,such as geography,climate in Anhui Province from north to south,in the Huaihe River and the Yangtze River for geographical lines.Lingshan grassland Xiao county,Jianshan grassland of Suzhou yongqiao.Daliu sheep stud of Chuzhou,Shahe sheep farm of Taihu county,Wanshan grassland of Lujiang county and so on five different grassland types..As a representative of the main grassland types in Anhui province.Sampling system,according to a survey about the main plant of five grassland diversity,and on the grassland,soil physical and chemical properties analysis.initially proved from Anhui Province main grassland types in a variety of reasons,analysis of grassland plant diversity and soil physical correlation between properties and field data.It also provides information and scientific basis for maintaining the ecological environment of Anhui grassland,promoting the development of grassland animal husbandry,developing the grassland resources reasonably,improving the income of farmers and developing the economy.The results are all as follows;1.In five different types grassland,there are 18 families,60 genera and 72 species of the main plant,the top 5 including Gramineae,28 genera,31 species;Compositae,4 genera,8 species;Cyperaceae,4 genera,7 species;Leguminosae,5 genera,6 species;Rosaceae,4 genera,5 species.2.Margalef(S)in different grassland types: Wanshan grassland of Lujiang county > Lingshan grassland of Xiao county > Jianshan grassland of Suzhou yongqiao > Daliu sheep stud of Chuzhou > Shahe sheep farm of Taihu county;Pielou(J)in different grassland types: Daliu sheep stud of Chuzhou > Wanshan grassland of Lujiang county > Lingshan grassland of Xiao county > Shahe sheep farm of Taihu county > Jianshan grassland of Suzhou yongqiao.3.The dominant species and the constructive species are different in different grassland types,among them,the dominant species in Daliu sheep stud of Chuzhou are Zoysia japonica.Imperata cylindrica,Sanguisorba officinalis,And the constructive species is Zoysia japonica;The dominant species in Shahe sheep farm of Taihu county are Cynodon dactylon.Eremochloa ophiuroides.Zoysia japonica.and the constructive species are Cynodon dactylon,Eremochloa ophiuroides.4.The soil water contents of Lingshan grassland of Xiao county is higher than the other four grassland types and the soil water contents of Jianshan grassland of Suzhou yongqiao,Daliu sheep stud of Chuzhou,Wanshan grassland of Lujiang county is similar,The soil water contents of Shahe sheep farm of Taihu county lower than the other four grassland types.The change trend of soil bulk density and soil water contentstrary on the contrary,the soil bulk density of Shahe sheep farm of Taihu county is higher than other four grassland typess.The soil bulk density of Daliu sheep stud of Chuzhou and Lingshan grassland of Xiao county is the lowest?5.The average soil depth of Shahe sheep farm of Taihu county is 57.82 cm,it is the biggest in the five grassland types,and the soil depth of Daliu sheep stud of Chuzhou is less than 17 cm.It is the thinnest in five grassland types.There is a certain relationship between aboveground biomass,plant heighy,community coverage and soil depth.6.The soil of Wanshan grassland of Lujiang county and Daliu sheep stud of Chuzhou is aciddic,pH value is less than 6,and the soil of other three grassland is alkaline.the alkaline of Lingshan grassland of Xiao county is the biggest of all.The soil organic matter,total K and rapidly available N of Jianshan grassland of Suzhou yongqiao are higher than other grassland types.The soil organic matter,total N and rapidly available K are lower than other grassland types,the total K and rapidly available P of Daliu sheep stud of Chuzhou and Wanshan grassland of Lujiang county are similar.The rapidly available P of Lingshan grassland of Xiao county is higher than other grassland types.The content of total N,total K,rapidly available N and other soil nutrients in different grassland types and obvious change in soil layers.AS th soil layers deepen,the soil nutrient in different grassland types is gradually decreased.