WANG Qiaohuan,LU Yudong.Spatial Variability of Soil Salinity in the Yaoba Oasis of Inner Mongolia[J].Northern Horticulture,2020,44(06):94-100.[doi:10.11937/bfyy.20192293]
内蒙古腰坝绿洲土壤盐分空间变异性规律
- Title:
- Spatial Variability of Soil Salinity in the Yaoba Oasis of Inner Mongolia
- Keywords:
- soil salinity; spatial variability; geostatistics; Yaoba oasis
- 文献标志码:
- A
- 摘要:
- 采用经典统计学、地统计学及Kriging最优内插法,对内蒙古腰坝绿洲耕层土(0~20 cm)的土壤盐分空间变异性进行分析,以期为该区土壤盐渍化防治提供参考依据。结果表明:研究区土壤为碱性氯化物-硫酸盐型轻度盐渍化土,全盐量、SO2-4具有中等空间自相关性,其余盐分指标具有强烈的空间自相关性,空间采样尺度以1 km为佳;在空间分布格局上,土壤全盐量、Ca2+、K++Na+、Mg2+、SO2-4、Cl-呈西南高东北低的特征,而pH、HCO-3呈西南低东北高的特征。
- Abstract:
- Using classical statistics,geostatistical and Kriging optimal interpolation,spatial variability of soil salinity in topsoil (0-20 cm) in the Yaoba oasis of Inner Mongolia was analyzed,so as to provide scientific basis for soil salinization control in this area.The results showed that the soil of study area was alkaline chlorine-sulfate of mild soil salinization.The values of soil total salt and SO2-4 had a medium spatial correlation and other salt indexes had a strong spatial correlation.The better spatial sampling scale was 1 km.On spatial distribution pattern,the values of soil total salt,Ca2+,K++Na+,Mg2+,SO2-4 and Cl- were relatively higher in southwest than northeast,on the contrary,the values of pH and HCO-3 were relatively higher in northeast than southwest.
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备注/Memo
第一作者简介:王巧焕(1980-),女,博士研究生,讲师,现主要从事水资源与水环境等研究工作。E-mail:53262205@qq.com.责任作者:卢玉东(1969-),男,博士,教授,博士生导师,现主要从事水文地质等研究工作。E-mail:oudq05@163.com.基金项目:国家自然科学基金资助项目(41662015);阿拉善SEE生态协会基金资助项目(220029150182);江西省教育厅资助项目(GJJ160562)。收稿日期:2019-09-25