菌根协会控制土壤碳降解酶活动和土壤碳动态在添加下:一个系统的审查
Yuanliu Hu1, Ji Chen2, Jørgen E Olesen3
1Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, China; South China National Botanical Garden, Guangzhou, Guangdong 510650, China; University of Chinese Academy of Sciences, Beijing 100039, China; Department of Agroecology, Aarhus University, 8830 Tjele, Denmark.
The Science of the total environment
|July 25, 2024
概括
添加对土壤碳的影响不同,根据菌根真菌. 菌生态系统显示碳降解酶活性降低,土壤有机碳增加,与树状菌生态系统不同.
科学领域:
- 土壤科学 土壤科学
- 微生物学 微生物学
- 生态生态学 生态生态学
背景情况:
- 土壤有机碳 (SOC) 动态受 (N) 添加的影响.
- 碳降解细胞外酶活动 (C-EEAs) 是SOC循环的关键.
- 了解控制C-EEAs的因素对于全球碳循环模型至关重要.
研究的目的:
- 为了调查控制C-EEAs的因素,根据N的补充.
- 确定菌根结合在调解C-EEA对N添加的反应中的作用.
- 为了改善地球系统模型中SOC动态的预测.
主要方法:
- 对C-EEAs和N的现有研究的元分析.
- 在生态系统中对C-EEA和SOC的反应进行比较,包括ectomycorrhizal (ECM) 和arbuscular mycorrhizal (AM) 生态系统.
- 对环境和实验因素的统计分析.
主要成果:
- 菌根结合是解释C-EEA对N添加的反应的主要因素.
- 在ECM主导的生态系统中,N添加抑制了C-EEAs13.1%,并增加了SOC库存5.2%.
- 在AM主导的生态系统中,N添加对C-EEAs或SOC库存没有显著影响.
结论:
- 添加对C-EEA和SOC动态的影响依赖于菌根.
- 以前的研究可能错误地估计了SOC变化,因为忽视了菌根的作用.
- 将菌根效应纳入模型将提高对土壤碳反应对全球变化的预测.
相关概念视频
The Roles of Bacteria and Fungi in Plant Nutrition
35.2K
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.
35.2K
Overview of Nitrogen Metabolism
7.9K
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...
7.9K
The Nitrogen Cycle
51.9K
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...
51.9K
The Soil Ecosystem
19.7K
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:
19.7K


