Study on the Characteristics of Soil Salinity on Yutian Oasis

LIU Guo-hua1,2,Hemit·Yimita1,WANG Qing-feng1,2,ZHANG Li-na1,2,L Yun-hai1,2 (1.Key Lab of Oasis Ecology,Ministry of Education,Urumuqi 830046,China;2.College of Resources & Environment Science,XinJiang University,Urumuqi 830046,China)

different land type;salinity characteristics of soil;Yutian Oasis

In Yutian Oasis more and more serious soil salinity is a major problem that directly affects the development of local agriculture and ecological environment.Selecting different types of soil profiles on Yutian Oasis,the soil salt content,soluble salt ion content and the various ions and salinity in corresponding groundwater were measured and analyzed using statistical character value and the trend surface.Results show that the salinity level of Yutian Oasis is quite serious and less arable land is available.The salinity level of farmland is far lower than the salinity level of other types.Soil salinity of the saline land shows a funnel-shaped type,and it cumulates strongly toward the surface.Soil salinity on the vertical soil profile of farmland and Oasis-Desert ecotone show that salt content of upper and lower sections are large,but the soil salinity of the central section is small.Compared with the farmland,the space variability of salt and some other major ions on saline land is far beyond the space variability of farmland.Different soil salinity has significantly different characteristics.The study has provided a theoretical basis for improving the ecological environment to improve the ecological environment of Yutian Oasis.