Study on Reclamation of Saline-alkali Land in Akto Plain Region in Xinjiang

Abstract

The area of saline-alkali land in Xinjiang accounts for about 1/3 of that in the whole China, so it is a key factor disturbing the economic development in local regions in Xinjiang. The paper combines field investigation and sampling with lab analysis to analyze the salinization state of soil in Akto plain region in Xinjaing, expounds the causes for salinization there, and proposes feasible governance recommendations. The findings are: 1) the project area has average total salt content of 107.1g/kg in soil horizon of 0-60cm, and belongs to strongly saline soil. The salinization type is mainly sulfate-chloride type; 2). In terms of vertical spatial distribution, the salinity mainly concentrates in soil horizon of 0-30cm, while in terms of horizontal spatial distribution, the degree of salinity takes on a trend of increasing from southwest to northeast and is closely related to topographic trend; 3) The soil in the project area belongs to halogenic parent material, and texture is silt loam in vertical uniformity. The groundwater has high mineralization and is buried deeply. The salinization is co-formed by primary and secondary reasons. The study can provide a reference frame for the governance of saline-alkali soil there.