采用绵羊轮牧策略提高土壤有机碳含量，减少干旱地区春小麦的二氧化碳排放量

IF 1.2 4区农林科学 Q4 SOIL SCIENCE

Soil Research Pub Date : 2024-07-23 DOI:10.1071/sr22075

Irshad Ahmad, Lina Shi, Shanning Lou, Jiao Ning, Yarong Guo, Muhammad Kamran, Wanhe Zhu, Fujiang Hou

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引用次数: 0

摘要

背景种植饲料作物对提高饲料产量至关重要，而放牧是提高土壤肥力的重要利用方法。目的通过春小麦田的放牧管理提高土壤有机碳（SOC）含量并减少二氧化碳（CO2）排放。方法我们对绵羊轮牧和对照进行了比较，并研究了它们对春小麦田土壤有机碳和二氧化碳排放的影响。主要结果与对照组相比，轮牧提高了SOC含量（23.5%）和土壤易氧化有机碳（EOC）含量（7.7%），降低了土壤微生物生物量碳（MBC）含量（35.8%）。与对照组相比，绵羊轮牧减少了二氧化碳排放量。与对照组相比，5 月和 6 月放牧绵羊可减少 28.9% 和 33.0% 的二氧化碳累积排放量。结论放牧绵羊提高了 SOC 含量，减少了春小麦田的二氧化碳排放量。意义根据我们的短期研究，绵羊轮牧对SOC、EOC和MBC含量以及干旱地区春小麦田的二氧化碳排放有显著影响。要大规模评估绵羊放牧对土壤肥力和二氧化碳排放的影响，有必要针对不同土壤和气候条件开展更多调查。此外，还需要进行长期研究，以更好地了解绵羊轮牧对干旱地区春小麦田土壤肥力和二氧化碳排放的影响。

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Sheep rotational grazing strategy to improve soil organic carbon and reduce carbon dioxide emission from spring wheat in an arid region

Context

Cultivating forage crops is crucial to improve feed production, and grazing is an important utilisation method to improve soil fertility.

Aim

Improving soil organic carbon (SOC) content and reducing carbon dioxide (CO₂) emission through grazing management from a spring wheat field.

Methods

We compared sheep rotational grazing and control, and studied their effects on SOC and CO₂ emission from a spring wheat field.

Key results

Sheep rotational grazing improved SOC content (by 23.5%) and soil easily oxidised organic carbon (EOC) content (by 7.7%) and reduces soil microbial biomass carbon (MBC) content (by 35.8%) compared with the control. Sheep rotational grazing reduced CO₂ emission compared with the control. Sheep grazing reduced cumulative CO₂ emission by 28.9% and 33.0% in May and June compared with the control.

Conclusions

Sheep grazing improved SOC content and reduce CO₂ emission from a spring wheat field.

Implications

Based on our short-term study, sheep rotational grazing has a significant effect on SOC, EOC and MBC contents and CO₂ emission from spring wheat fields in arid regions. For a large-scale assessment of sheep grazing on soil fertility and CO₂ emission, more investigation for different soils and climates is necessary. Furthermore, a long-term study is also necessary to better understand the effect of sheep rotational grazing on soil fertility and CO₂ emission from spring wheat fields in arid regions.

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来源期刊

Soil Research SOIL SCIENCE-

CiteScore

3.20

自引率

6.20%

发文量

审稿时长

4.5 months

期刊介绍： Soil Research (formerly known as Australian Journal of Soil Research) is an international journal that aims to rapidly publish high-quality, novel research about fundamental and applied aspects of soil science. As well as publishing in traditional aspects of soil biology, soil physics and soil chemistry across terrestrial ecosystems, the journal welcomes manuscripts dealing with wider interactions of soils with the environment. Soil Research is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science.