CORRELATION BETWEEN SOIL SALTILISATION AND COMMUNITY DIVERSITY: THE CASE OF FUKANG OASIS
阜康绿洲土壤盐渍化与植物群落多样性的相关性分析

By employing indicators as soil PH, conductance and salt content, different soil salinity degrees are plotted out. There are 9 types of salinisation levels in Fukang oasis. Within them, the strong saline soil and solonchak are the main types, which, with regards to latitude and from the lower of diluvial fan to desert, distribute in turn as middle saline soil, strong saline soil, solonchak, strong saline soil, solonchak and non-saline distribute. Concerning indicators as the type of dominant species, shrub coverage, abundance and diversity induces, as well as the principles and systems of China's vegetation class, this article classified the Fukang vegetation into 9 types. These communities in latitude sequence are: \%Sudeda physophora\% communities, \%Reaumuria soongorica\% communities, \%Tamarix ramosisma\% communities and halophyte communities, \%Reaumuria soongorica\% communities and \%Haloxylon ammodendron\% communities in turn. \%Reaumuria soongorica\% is the widely distributed zonal vegetation in Fukang, interlacing with other communities. The correlation analysis shows that relationships between the degree of soil salinity and plant community coverage, abundance, and all diversity indices are not significant. The changes of soil salinity have significant influence on the components of plant communities, especially the dominant species and constructive species, as well as on the distribution of different communities and succession.