稀有物种在长达十年的气添加后,有助于植物多样性的部分恢复
Yang Bai1, Tong'an Wei1, Wenjun Wang1
1State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu Province, 730000, People's Republic of China.
Oecologia
|October 22, 2025
概括
在停止添加后,稀有植物物种激增,推动高山草原的多样性恢复. 这一临时窗口突出了生态系统恢复和生物多样性保护的机会.
科学领域:
- 生态生态学 生态生态学
- 植物社区动态 植物社区动态
- 恢复生态系统恢复生态系统
背景情况:
- (N) 添加对植物群落多样性产生影响,但N停止后的恢复机制尚不清楚.
- 青海-西藏高原的高山草原对营养丰富非常敏感.
- 了解短期反应对于有效的草原管理至关重要.
研究的目的:
- 调查气停止对高山草原植物群落和环境因素的短期影响.
- 确定十年的气添加后植物多样性恢复的驱动因素.
- 探索光线可用性和土壤营养素在社区重组中的作用.
主要方法:
- 经过10年的气添加,然后停止,研究了高山草原中的植物群体和环境因素.
- 分析了植物物种多样性,丰度和表现的变化.
- 评估了土壤营养水平 (,) 和光线的可用性.
主要成果:
- 植物物种多样性在气停止后出现了部分恢复,主要是由于稀有物种的复苏.
- 观察到增加光线可用性和降低土壤和水平.
- 稀有物种的表现有所改善,而主导物种的表现有所下降,改变了竞争层次.
结论:
- 在气停止后,稀有物种的恢复和多样性增强存在一个短暂的机会窗口.
- 光和土壤营养素的变化破坏了竞争层次结构,有利于稀有物种.
- 短期干预可以促进近乎自然的恢复,帮助草原生态系统中的生物多样性保护.
相关概念视频
The Roles of Bacteria and Fungi in Plant Nutrition
46.5K
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.
46.5K
Bioremediation
22.0K
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.
22.0K
Inorganic Nitrogen Assimilation
421
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
421
Ecological Succession
21.2K
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
21.2K
Threats to Biodiversity
26.4K
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
26.4K
Overview of Nitrogen Metabolism
10.9K
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...
10.9K


