全球土壤固微生物的环境转折点
Yueqi Hao1,2, Hao Liu2, Jiawei Li2
1Key Laboratory for Environmental Factors Control of Agro-product Quality Safety (Ministry of Agriculture and Rural Affairs), Tianjin Key Laboratory of Agro-environment and Safe-product, Institute of Agro-environmental Protection, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
iScience
|January 24, 2025
概括
全球固定微生物 (NFMs) 受到土壤pH值,有机碳和降水的显著影响. 确定这些因素的关键转折点对于理解NFM分布和未来变化至关重要.
科学领域:
- 环境科学 环境科学
- 土壤微生物学 土壤微生物学
- 计算生态学计算生态学
背景情况:
- 固定微生物 (NFM) 在土壤循环和生态系统健康方面发挥着至关重要的作用.
- 无线金融机器对各种环境因素很敏感,这使得它们的分布复杂且在全球范围内变化.
- 了解这些影响对于预测土壤健康和农业生产率至关重要.
研究的目的:
- 使用先进的计算方法分析全球固定微生物 (NFM) 数据.
- 确定影响NFM分布的关键环境因素及其关键转折点.
- 在未来的气候场景下预测NFM丰度的潜在变化.
主要方法:
- 开发和应用一个随机森林模型,通过分布式延迟粒子群优化 (RODDPSO) 算法进行优化.
- 分析全球NFM数据,考虑土壤pH值,有机碳 (OC),平均年降水量 (MAP),海拔高度和总 (TP).
- 确定影响环境因素的关键转折点,并根据SSP 8.5.5进行未来的NFM分布建模.
主要成果:
- 土壤pH,有机碳 (OC) 和平均年降水 (MAP) 被确定为影响NFM的前三大全球因素,其贡献超过10%.
- 确定了pH (7.84) 和OC (2.71%) 的关键临界点. 马普的贡献达到1,265.65毫米的峰值.
- 在SSP 8.5下,预测显示非洲的NFM将增加12%,而北美和大洋洲可能在2100年前分别下降16%和36%.
结论:
- 该研究提供了一个全面的NFM全球地图,并确定了关键的环境转折点.
- 土壤pH,OC和MAP是全球NFM分布的主要驱动因素.
- 未来的气候变化场景预测了NFM种群的显著区域变化,突出了对适应性管理策略的需求.
相关概念视频
The Nitrogen Cycle
51.5K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
51.5K
Bioremediation
18.2K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.2K
The Soil Ecosystem
19.6K
Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
19.6K
The Roles of Bacteria and Fungi in Plant Nutrition
34.9K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
34.9K
Overview of Metabolism
29.5K
Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
29.5K
Overview of Nitrogen Metabolism
7.8K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
7.8K


