A study on spatial variability of soil organic matters under typical plant communities in the wetland of Lake Ebinur

Selected the wetland in Lake Ebinur with special climate and soil parent material as the studied area in the paper, we analyzed the variations of soil organic matter content in four typical plant communities by using the traditional statistics and geo-statistics methods. The results showed that:(1) The differentiate coefficient of local soil organic matter content in the four plant communities displayed a moderate variation with different seasons.(2) With the increase of the soil depth, the soil layers with higher content of organic matter in Suaeda salsa community were at the depth of 0-5 cm and 50-60 cm, while those were at the depth of 10-20 cm in Phragmites community and Halocnemum strobilaceum community. The soil organic matter content in Haloxylon ammodendron community showed significant spatial characteristics in certain areas and strong spatial correlation. The variation degree of soil organic matter content in Phragmites community was larger than other plant communities in May. In general, there was a large spatial variability range of soil organic matter in Phragmites community, indicating that the distance from the lakeshore had a certain impact on the spatial variability of soil organic matter.