不同土地利用方式下表层土壤稳定入渗速率的时间变化

郭天崎; 黄明斌; 朱谧远

doi:10.13961/j.cnki.stbctb.2023.02.014

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不同土地利用方式下表层土壤稳定入渗速率的时间变化

试验研究

- 不同土地利用方式下表层土壤稳定入渗速率的时间变化
- Temporal Change of Topsoil Steady State Infiltration Rate Under Different Land Uses
- 水土保持通报 2023年43卷第2期页码：113-118
- 作者机构：
  
  1. 西北农林科技大学资源环境学院, 陕西杨凌,712100
  2. 西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目“重构土壤结构变化对剖面水—溶质耦合迁移过程的影响”(42177287)
- DOI：10.13961/j.cnki.stbctb.2023.02.014
  中图分类号： S152.5
- 纸质出版：2023
- 稿件说明：
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郭天崎, 黄明斌, 朱谧远. 不同土地利用方式下表层土壤稳定入渗速率的时间变化[J]. 水土保持通报, 2023,43(2):113-118.

Guo Tianqi, Huang Mingbin, Zhu Miyuan. Temporal Change of Topsoil Steady State Infiltration Rate Under Different Land Uses[J]. Bulletin of Soiland Water Conservation, 2023, 43(2): 113-118.
郭天崎, 黄明斌, 朱谧远. 不同土地利用方式下表层土壤稳定入渗速率的时间变化[J]. 水土保持通报, 2023,43(2):113-118. DOI： 10.13961/j.cnki.stbctb.2023.02.014.

Guo Tianqi, Huang Mingbin, Zhu Miyuan. Temporal Change of Topsoil Steady State Infiltration Rate Under Different Land Uses[J]. Bulletin of Soiland Water Conservation, 2023, 43(2): 113-118. DOI： 10.13961/j.cnki.stbctb.2023.02.014.

摘要

[目的

]

研究土壤稳定入渗速率(f

)的时间变化规律对土壤剖面水分运动和溶质运移的影响，为流域水文循环模型研究提供理论支持。 [方法

]

以中国科学院长武黄土高原农业生态试验站附近典型的土地利用类型为研究对象，利用双环入渗法采集玉米地、苹果园和刺槐林地2021年4—10月的f

值。 [结果

]

①f

值空间分布的最大相关距离是7.12 m； ②土壤容重与f

值呈显著负相关，而土壤初始含水量与f

值无显著相关性(p＞0.05)； ③4—5月各土地利用类型的f

值随时间增加而增加；6—10月，各土地利用类型的f

值随时间的变化特征存在差异，表现为玉米地随时间的增加先增加后下降，苹果园随时间的增加而增大，刺槐林随时间的增加先增大后趋于稳定。方差分析表明，不同土地利用类型的f

值受时间影响显著(p＜0.05)。 [结论

]

观测期内，受耕作、降雨、根系活动与土壤干湿交替变化以及枯枝落叶层的影响，不同土地利用方式下f

值的时间变化规律不同。

Abstract

[Objective] The influence of time variation of topsoil steady state infiltration rate (fc) on water movement and solute transport in the soil profile was studied in order to provide theoretical support for the study of the hydrological cycle model in this region. [Methods] The study was conducted on typical land use types near the Loess Plateau Agricultural Ecological Experimental Station of the Chinese Academy of Sciences. The fc values for a corn field

an apple orchard

and a Robinia pseudoacacia forestland were collected from April to October 2021 using the double ring infiltrometer method. [Results] ① The maximum correlation distance of fc spatial distribution was 7.12 m. ② There was a significant negative correlation between soil bulk density and fc value

while there was no significant correlation between initial soil water content and fc value (p＞0.05). ③ From April to May

the fc value for each land use type increased. From June to October

the fc value for each land use type changed differently with time: fc value for the corn field increased first and then decreased

for the apple orchard increased

and for the Robinia pseudoacacia forestland increased first and then stabilized. Variance analysis showed that the fc values for different land uses were significantly affected by time (p＜0.05). [Conclusion] Tillage

rainfall

root activity

and alternation of dry and wet soil and litter resulted in different temporal variations of fc value under different land uses during the observation period.

关键词

Keywords

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