[1]潘佳颖,王建宇,王超.宁夏压砂地土壤全盐量和pH值的空间变异分析[J].北方园艺,2016,40(03):157-162.[doi:10.11937/bfyy.201603045]
PAN Jiaying,WANG Jianyu,WANG Chao.Spatial Variability Analysis on Total Salt Content and pH Value of Soil on Gravel-mulched Land in Ningxia[J].Northern Horticulture,2016,40(03):157-162.[doi:10.11937/bfyy.201603045]
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PAN Jiaying,WANG Jianyu,WANG Chao.Spatial Variability Analysis on Total Salt Content and pH Value of Soil on Gravel-mulched Land in Ningxia[J].Northern Horticulture,2016,40(03):157-162.[doi:10.11937/bfyy.201603045]
宁夏压砂地土壤全盐量和pH值的空间变异分析
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
卷:
第40卷
期数:
2016年03
页码:
157-162
栏目:
出版日期:
2016-02-15
- Title:
- Spatial Variability Analysis on Total Salt Content and pH Value of Soil on Gravel-mulched Land in Ningxia
- Keywords:
- spatial variability analysis; total salt content of soil; geostatistics; gravel-mulched land
- 文献标志码:
- A
- 摘要:
- 以宁夏境内压砂地为研究对象，研究了不同土层压砂地土壤全盐量和pH值的空间变异性。结果表明：描述性统计分析，在垂直方向上，pH值随土壤深度的增加而下降，每层土样pH值的变异系数变化均＜10%，属弱变异性；全盐量随着土样深度的增加而增加，变异系数均>100%，属强空间变异性。各层pH值理论分布模型均为高斯模型，且具有中等程度的空间相关性，反映出压砂地土壤pH值的空间变异是随机性因素和结构性因素共同作用的结果；0~20、20~40 cm全盐理论分布模型为高斯模型，40~60 cm属球状模型，具有强烈的空间相关性，说明其变异主要是由结构性因素引起。Kriging插值分析表明研究区土壤全盐量和pH值在水平空间分布总体呈环状，pH值由西北向东南方向逐渐降低，全盐量由西北向东南方向递增。
- Abstract:
- The total salt content and pH value of gravel-mulched land in different depths on the spatial variability was studied in this paper.The descriptive statistics showed that：the pH value was decreased and the coefficient of variation of pH value in different lays was <10% and in a slight spatial variability with the soil depth increased；the total salt content increased and the coefficient of variation was >100% and in a high spatial variability with soil depth increased.The results showed that the theoretical distribution models of pH value in different layers were Gaussian model with a moderate correlation and it reflected that the spatial variability of pH value on gravel-mulched land soil was jointly affected by random factors and the role of structural factors；the total salt theoretical distribution model was the Gaussian model in 0-20 cm and 20-40 cm，but it was spherical model in 40-60 cm of soil depths and it showed that there were a high spatial correlation and their spatial variability was jointly affected by structural factors.Kriging analyses showed that the total salt content and pH value distribute in annular on the horizontal direction.The soil pH value was decreased gradually from northwest to southeast，but the total salt content increased from northwest to southeast.
备注/Memo
第一作者简介：潘佳颖(1991-)，女，宁夏银川人，硕士研究生，研究方向为自然地理。E-mail:pjy924197957@qq.com.责任作者：王建宇(1970-)，女，硕士，研究员，现主要从事干旱区特色产业发展与生态关系等研究工作。E-mail：w305y517@nxu.edu.cn.基金项目：国家自然科学基金资助项目(41161085)。
更新日期/Last Update:
2016-04-16