Soil moisture content increases root length and decreases soil detachment capacity based on an optimal threshold

IF 3.4 3区生物学 Q1 PLANT SCIENCES

Rhizosphere Pub Date : 2025-05-13 DOI:10.1016/j.rhisph.2025.101107

Misagh Parhizkar

引用次数: 0

Abstract

Soil moisture can have a direct and indirect influence on soil detachment capacity (D_c). However, the appropriate threshold of soil moisture for increasing total root length and decreasing D_c is still unclear. This paper presents a quantitative assessment of impacts of soil moisture classes on total root length and D_c. The values of soil moisture content were classified into five classes, 10–15 %, 20–25 %, 30–35 %, 40–45 % and 50–55 %, and soil samples along with root prepared for D_c measurements. The results showed that the decrease in D_c as a function of total root length could be related to soil moisture class of 30–35 %. A modelling approach has shown that linear regression models between D_c and shear stress for soil moisture classes were accurate (r² = 0.71–83) for predicting rill erodibility (K_r).

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根据最佳阈值，土壤含水量增加了根长，降低了土壤剥离能力

土壤水分对土壤脱离能力有直接和间接的影响。然而，增加总根长和降低直流电的适宜土壤湿度阈值尚不清楚。本文定量评价了土壤水分等级对总根长和直流电的影响。将土壤含水率分为10 - 15%、20 - 25%、30 - 35%、40 - 45%和50 - 55% 5个等级，并将土壤样品和根系一起进行直流测量。结果表明，直流电随根长变化的减小可能与土壤含水量为30 ~ 35%有关。一种建模方法表明，土壤水分等级的Dc和剪应力之间的线性回归模型在预测细沟可蚀性（Kr）方面是准确的（r2 = 0.71-83）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Rhizosphere Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

5.70

自引率

8.10%

发文量

155

审稿时长

29 days

期刊介绍： Rhizosphere aims to advance the frontier of our understanding of plant-soil interactions. Rhizosphere is a multidisciplinary journal that publishes research on the interactions between plant roots, soil organisms, nutrients, and water. Except carbon fixation by photosynthesis, plants obtain all other elements primarily from soil through roots. We are beginning to understand how communications at the rhizosphere, with soil organisms and other plant species, affect root exudates and nutrient uptake. This rapidly evolving subject utilizes molecular biology and genomic tools, food web or community structure manipulations, high performance liquid chromatography, isotopic analysis, diverse spectroscopic analytics, tomography and other microscopy, complex statistical and modeling tools.