滨海盐渍土土壤物化性质与水动力学性质变异

祝瑜; 褚琳琳; 朱文东; 孙全; 孙庆凯; 相入兴; 于劲松

doi:10.13870/j.cnki.stbcxb.2022.06.046

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滨海盐渍土土壤物化性质与水动力学性质变异

更新时间：2025-03-12

- 滨海盐渍土土壤物化性质与水动力学性质变异
- Variation of Soil Physicochemical Properties and Hydrodynamic Properties of Coastal Saline Soil
- 水土保持学报 2022年36卷第6期页码：379-386
- 作者机构：
  
  1. 河海大学农业科学与工程学院,南京,211100
  2. 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室,北京,100101
  3. 连云港香河园林绿化工程有限公司,江苏,连云港,222047
  4. 江苏方洋建设工程管理有限公司,江苏,连云港,222047
- 作者简介：
- 基金信息：
  
  徐圩新区成果转化项目"徐圩新区盐碱地原土绿化技术模式研究";中国科学院前沿科学重点研究计划项目"盐碱逆境农业与区域水盐精准调控理论构建"(QYZDJ-SSW-DQC028)
- DOI：10.13870/j.cnki.stbcxb.2022.06.046
  中图分类号： S152
- 纸质出版：2022
- 稿件说明：
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祝瑜, 褚琳琳, 朱文东, 等. 滨海盐渍土土壤物化性质与水动力学性质变异[J]. 水土保持学报, 2022,36(6):379-386.

ZHU Yu, CHU Linlin, ZHU Wendong, et al. Variation of Soil Physicochemical Properties and Hydrodynamic Properties of Coastal Saline Soil[J]. 2022, 36(6): 379-386.
祝瑜, 褚琳琳, 朱文东, 等. 滨海盐渍土土壤物化性质与水动力学性质变异[J]. 水土保持学报, 2022,36(6):379-386. DOI： 10.13870/j.cnki.stbcxb.2022.06.046.

ZHU Yu, CHU Linlin, ZHU Wendong, et al. Variation of Soil Physicochemical Properties and Hydrodynamic Properties of Coastal Saline Soil[J]. 2022, 36(6): 379-386. DOI： 10.13870/j.cnki.stbcxb.2022.06.046.

摘要

为分析不同梯度盐渍土土壤的物理性质与水动力学性质变异状况

在江苏沿海连云港市徐圩新区开展了试验研究。对5种不同盐渍化级别土壤进行取样

测定其pH、ECe、容重、总孔隙度、含水率和饱和导水率等

分析不同级别滨海盐渍土壤物化特性参数和水动力学性质变化规律。结果表明:(1)不同级别盐渍土0—50 cm剖面土壤ECe先变小后增大

但40—50 cm剖面ECe明显大于0—10 cm剖面。非盐渍土和极重度盐渍土0—50 cm剖面土壤ECe变化较小

轻度盐渍土、中度盐渍土、重度盐渍土的0—50 cm剖面土壤ECe值变化较大。(2)土壤ECe和容重呈极显著负相关关系

与毛管孔隙度、非毛管孔隙度、总孔隙度、含水率、毛管持水量、田间持水量、最大持水量呈极显著正相关关系。土壤孔隙度和持水量呈极显著正相关关系。(3)极重度盐渍土饱和导水率明显小于其他级别的盐渍土

且0—20 cm剖面土壤饱和导水率大于20—50 cm剖面。研究结果可为滨海盐渍土水盐管理和生态环境建设提供理论参考依据。

Abstract

This study aimed to analyze the variation of soil physical and hydrodynamic properties of saline soil with different salinization levels

the experimental study was carried out in Xuwei New Area of Lianyungang City

Jiangsu Province. Five kinds of soils with different salinization levels were sampled and their pH

ECe

bulk density

total porosity

water content and saturated hydraulic conductivity were measured. The changes of physicochemical parameters and hydrodynamic properties of coastal saline soils with different salinization levels were analyzed. The results showed that: (1) The soil ECe of 0—50 cm profile of different saline soils first decreased and then increased

but the ECe of 40—50 cm profile was larger than that of 0—10 cm profile. The changes of soil ECe in 0—50 cm profile of non-saline soil and extremely heavy saline soil were small

and the ECe value of 0—50 cm section of light saline soil

medium saline soil and heavy saline soil fluctuated greatly. (2) Soil ECe was negatively correlated with bulk density

and positively correlated with capillary porosity

non-capillary porosity

total porosity

moisture content

capillary water capacity

field water capacity and maximum water capacity. There was a very significant positive correlation between soil porosity and water holding capacity. (3) The saturated hydraulic conductivity of extremely heavy saline soil was significantly lower than that of other saline soils

and the saturated hydraulic conductivity of 0—20 cm profile was greater than that of 20—50 cm profile. The results could provide a theoretical reference for water and salt management and ecological environment construction of coastal saline soil.

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Keywords

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