Short-term effects of overwintering on porosity of the compacted topsoil due to harvest traffic in Northeast China

IF 6.8 1区农林科学 Q1 SOIL SCIENCE

Soil & Tillage Research Pub Date : 2025-08-16 DOI:10.1016/j.still.2025.106820

Shijie Qin , Lingling Liu , Hannah Cooper , W. Richard Whalley , Hu Zhou , Tusheng Ren , Weida Gao

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引用次数: 0

Abstract

The multi-hydrothermal processes in agricultural soils during overwintering modify compacted soil structure in cold winter regions. The depth-dependent changes in the topsoil pore-network within field-based compacted zones caused by harvest traffic, before and after winter, remain poorly understood. In this study, we aimed to investigate the short-term effects of overwintering on topsoil porosity of a clay loam soil in the harvest traffic zone in Northeast China using X-ray CT. Undisturbed soil cores were collected in the 0–10 cm layer of the non-traffic and traffic zones before and after winter. After harvest, both total porosity (ε_total) and porosity of > 0.04 mm (ε_X-ray) significantly decreased by 0.04 and 0.07 cm³ cm⁻³ due to the machinery traffic, respectively. Following winter, the ε_total of the traffic zone significantly increased by 0.08 cm³ cm⁻³ and was greater than that of non-traffic zone porosity before winter. The loosening effects of overwintering on compacted soil in the traffic zone diminished with increasing soil depth, and marked alterations limited to the uppermost 3.5 cm. The increase in ε_X-ray was primarily resulted from the changes in 0.04–1.0 mm pores. Therefore, it is indicated that overwintering can alleviate soil compaction of traffic zone only in the uppermost layer.

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东北采伐交通对表层土壤孔隙度的短期影响

冬季寒冷地区农业土壤越冬过程中的多重水热作用改变了土壤的压实结构。在冬季前后，收获交通引起的农田夯实区表层土壤孔隙网络的深度依赖变化仍然知之甚少。在这项研究中，我们旨在利用x射线CT研究越冬对东北收获交通带粘壤土表土孔隙度的短期影响。冬季前后在非交通区和交通区0 ~ 10 cm层采集未受干扰的土芯。收获后，由于机械交通的影响，总孔隙度（εtotal）和孔隙度>； 0.04 mm （εX-ray）分别显著降低0.04和0.07 cm3 cm - 3。入冬后，交通区孔隙度ε总量显著增加0.08 cm3 cm−3，且大于入冬前的非交通区孔隙度ε总量。越冬对交通带压实土的松动作用随土层深度的增加而减弱，且变化仅限于最上层3.5 cm。ε x射线的增加主要是由0.04 ~ 1.0 mm孔隙的变化引起的。由此可见，越冬对交通带土壤压实的缓解作用仅在最上层。

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来源期刊

Soil & Tillage Research 农林科学-土壤科学

CiteScore

13.00

自引率

6.20%

发文量

266

审稿时长

5 months

期刊介绍： Soil & Tillage Research examines the physical, chemical and biological changes in the soil caused by tillage and field traffic. Manuscripts will be considered on aspects of soil science, physics, technology, mechanization and applied engineering for a sustainable balance among productivity, environmental quality and profitability. The following are examples of suitable topics within the scope of the journal of Soil and Tillage Research: The agricultural and biosystems engineering associated with tillage (including no-tillage, reduced-tillage and direct drilling), irrigation and drainage, crops and crop rotations, fertilization, rehabilitation of mine spoils and processes used to modify soils. Soil change effects on establishment and yield of crops, growth of plants and roots, structure and erosion of soil, cycling of carbon and nutrients, greenhouse gas emissions, leaching, runoff and other processes that affect environmental quality. Characterization or modeling of tillage and field traffic responses, soil, climate, or topographic effects, soil deformation processes, tillage tools, traction devices, energy requirements, economics, surface and subsurface water quality effects, tillage effects on weed, pest and disease control, and their interactions.