Effects of rainfall intensities and slope gradients on nitrogen loss at the seedling stage of maize (Zea mays L.) in the purple soil regions of China

He, Song; Yang, Gong; Zheng, Ziheng; Luo, Ziteng; Tan, Bo

doi:10.25165/j.ijabe.20221502.6015

Cited by 4 publications

(2 citation statements)

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“…Previous research findings have also shown that in anaerobic soil conditions, the concentration of soil NO 3 − -N decreases as waterlogging time increases, while the concentration of soil NH 4 + -N increases [7,[59][60][61]. Furthermore, in line with the findings of this investigation, other studies have stated that NO 3 − -N is the primary factor of nitrogen loss in runoff water in dryland systems [62][63][64].…”

Section: Effects Of Waterlogging Stress On Soil Nutrients and Runoff ...supporting

confidence: 90%

Effects of Waterlogging Stress on Root Growth and Soil Nutrient Loss of Winter Wheat at Seedling Stage

Luo,

Liu,

Song

et al. 2024

Agronomy

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With global climate change, flooding events are becoming more frequent. However, the mechanism of how waterlogging stress affects crop roots needs to be studied in depth. Waterlogging stress can also lead to soil nitrogen and phosphorus loss, resulting in agricultural surface pollution. The aim of this study is to clarify the relationship between soil nitrogen and phosphorus distribution, root growth characteristics, and nitrogen and phosphorus loss in runoff water under waterlogging stress during the winter wheat seedling stage. In this paper, Zhengmai 136 was selected as the experimental material, and two water management methods (waterlogging treatment and non-waterlogging control treatment) were set up. Field experiments were conducted at the Wudaogou Hydrological Experimental Station in 2022 to assess the nitrogen and phosphorus concentrations in runoff water under waterlogging stress. The study also aimed to analyze the nitrogen and phosphorus content and the root distribution characteristics in different soil layers under waterlogging stress. The results showed as the following: 1. Waterlogging stress increased the characteristic parameters of winter wheat roots in both horizontal and vertical directions. Compared with the control treatment, the root length increased by 1.2–29.9% in the waterlogging treatment, while the root surface area and volume increased by an average of 3.1% and 41.9%, respectively. 2. Nitrogen and phosphorus contents in waterlogged soils were enriched in the 0–20 cm soil layer, but both tended to decrease in the 20–60 cm soil layer. Additionally, there was an inverse relationship between the distribution of soil nutrients and the distribution of wheat roots. 3. During the seedling stage of winter wheat, nitrogen loss was the main factor in the runoff water. In addition, nitrate nitrogen concentration averaged 55.2% of the total nitrogen concentration, while soluble phosphorus concentration averaged 79.1% of the total phosphorus concentration. 4. The results of redundancy analysis demonstrated that available phosphorus in the soil was the key environmental factor affecting the water quality of runoff water. Total phosphorus and dissolved phosphorus in the water were identified as the dominant factors influencing root growth.

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Section: Effects Of Waterlogging Stress On Soil Nutrients and Runoff ...supporting

confidence: 90%

Effects of Waterlogging Stress on Root Growth and Soil Nutrient Loss of Winter Wheat at Seedling Stage

Luo,

Liu,

Song

et al. 2024

Agronomy

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“…It follows that the studies that investigated the effect of the slope and rainfall on the soil and water loss are concentrated mainly in Loess areas. Although some scholars have undertaken relevant studies on the production of runoff and sediment of sloping lands in the purple soil regions, their studies mainly focused on the benefits of soil and water conservation measures and the transformation of nitrogen and phosphorus ( Jin et al 2019;He et al 2022). Few studies have reported on the effects of the slope and rainfall on the runoff and sediment yield.…”

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confidence: 99%

Effects of rainfall and the slope gradient on the soil and water loss in a purple soil area

Zhang¹,

Zhu²,

Sang³

et al. 2022

Soil & Water Res.

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Soil and water losses in purple soil area is becoming an increasingly severe problem, bringing enormous challenges to environmental protection in rural areas. In this study, simulated rainfall experiments were conducted to analyse the effects of rainfall and the slope conditions on the soil and water loss. Purple soil from a typical slope in the Beibei District of Chongqing was selected as the experimental soil. Twenty rainfall scenarios with varying rainfall intensities and slope conditions were created in the simulation. The results indicate that the runoff initiation time shortened with an increased rainfall intensity and slope gradient. There was a logarithmic relationship between the effect of the rainfall amount on both the runoff intensity and sediment yield intensity. Generally, both the runoff and sediment yield showed a positive linear relationship with the rainfall intensity under different slope gradient conditions. In terms of the same rainfall intensity, both the runoff intensity and sediment yield intensity increased with the slope. Furthermore, a critical slope gradient for the soil and water loss was found between 20° and 25°. This study aimed to provide a reference for soil and water conservation research in a purple soil area.

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Reducing impacts of the landuse landcover changes (LULCC) on erosion yield in Sengon (paraserianthes falcataria (L.) Nielsen) plantations case study at Jember Regency Indonesia

Andriyani,

Ernanda,

Hidayat

2024

AIP Conference Proceedings

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Effects of rainfall intensities and slope gradients on nitrogen loss at the seedling stage of maize (Zea mays L.) in the purple soil regions of China

Cited by 4 publications

References 0 publications

Effects of Waterlogging Stress on Root Growth and Soil Nutrient Loss of Winter Wheat at Seedling Stage

Effects of Waterlogging Stress on Root Growth and Soil Nutrient Loss of Winter Wheat at Seedling Stage

Effects of rainfall and the slope gradient on the soil and water loss in a purple soil area

Reducing impacts of the landuse landcover changes (LULCC) on erosion yield in Sengon (paraserianthes falcataria (L.) Nielsen) plantations case study at Jember Regency Indonesia

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