西沙群岛土壤环境质量状况及特征分析

Analysis on Quality Status and Characteristics of Soil Environment in Xisha Islands

[目的]研究西沙群岛土壤环境的质量状况和特征。[方法]通过对西沙群岛各岛采集土样的分析检测,分析了西沙群岛土壤环境特征和存在的主要问题,并进行土壤环境质量评价。[结果]西沙群岛土壤有机质含量较高,土壤的机械组成以砂粒为主,粉粒和粘粒含量很低。各元素含量差异较大,空间分布不均衡。永兴岛机场附近土壤中Cd超标严重,超标倍数达1.00。赵述岛Se超标倍数达5.20,对岛屿的土壤环境造成污染。[结论]该研究为南海诸岛的其他海岛土壤环境质量和特征分析提供参考。

[Objective] The research aimed to study the quality status and characteristics of soil environment in Xisha Islands.[Method] Through detecting the collected soil samples of various islands in Xisha Islands,the main problems and soil environment characteristic of Xisha Islands were analyzed,moreover,soil environment quality was evaluated.[Result] Soil organic matter content of Xisha Islands were higher,and mechanical composition of soil were mainly in sand,powder and viscous grain content were very low.There were greater differences for every element content,and spatial distribution were uneven.Near the airport of Yongxing Island,Cd content in soil was higher than the standard greatly,exceeding multiple even reached to 1.00.In Zhaoshu Island,the exceeding multiple of Se content even reached to 5.20,which caused soil environment pollution.[Conclusion] The study provided the reference for the analysis of soil environmental quality and characteristics of other islands of South China Sea Islands.