实验性干旱和植物多样性对作物轮换模型系统多功能性的影响
Guylain Grange1,2, Caroline Brophy2, Rishabh Vishwakarma2
1Environment, Soils and Land Use Department, Teagasc, Johnstown Castle, Wexford, Y35 TC97, Ireland.
Scientific reports
|May 4, 2024
概括
在生产性草原上增加植物多样性可以增强生态系统的多功能性和稳定性,即使在干旱的情况下. 多样化的草原优于单一种植,为弹性农业系统提供了实用的农场管理策略.
科学领域:
- 农业科学 农业科学
- 生态生态学 生态生态学
- 环境科学 环境科学
背景情况:
- 生产性草原在经济上很重要,但植物多样性对其多功能性的影响,特别是环境干扰下,人们对其了解甚少.
- 植物多样性 (丰富性,组成,丰富性) 的轻微变化可以影响多种生态系统功能,包括产量.
- 干旱等环境干扰可以显著影响草原生态系统功能.
研究的目的:
- 量化植物多样性和水资源 (干旱) 对草原多功能性的影响.
- 评估草原多样性对后续作物产量的"后续"影响.
- 确定植物多样性的增加是否可以减轻干旱对生态系统功能的负面影响.
主要方法:
- 系统地操纵了草原社区的物种丰富性,组成和相对丰富性.
- 应用供水处理方法 (雨水和干旱) 来量化环境干扰的影响.
- 测量了六个关键生态系统功能:产量,产量一致性,消化能力,除草,对作物产量的遗留影响和肥效率.
主要成果:
- 干旱对大多数生态系统功能产生了负面影响,对物种和功能特定的反应.
- 增加植物多样性提高了平均性能,减少了生态系统功能之间的变化,促进了多功能稳定性.
- 不同的草原混合物在雨水和干旱条件下表现出比单一栽培更高的多功能性,显示出超越性能的过度表现.
- 高多样性,低混合物在多功能性方面超过了低多样性,高单种植物.
结论:
- 植物多样性是提高草原多功能性和稳定的关键因素.
- 提高生产性草原的植物多样性可以减轻干旱的影响,并提高整体系统的弹性.
- 促进草原中的植物多样性是可持续农业系统和作物轮换的可行农场规模管理策略.
相关概念视频
02:41Responses to Drought and Flooding
10.7K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.7K
01:25Multiple Regression
3.0K
Multiple regression assesses a linear relationship between one response or dependent variable and two or more independent variables. It has many practical applications.
Farmers can use multiple regression to determine the crop yield based on more than one factor, such as water availability, fertilizer, soil properties, etc. Here, the crop yield is the response or dependent variable as it depends on the other independent variables. The analysis requires the construction of a scatter plot...
Farmers can use multiple regression to determine the crop yield based on more than one factor, such as water availability, fertilizer, soil properties, etc. Here, the crop yield is the response or dependent variable as it depends on the other independent variables. The analysis requires the construction of a scatter plot...
3.0K
02:22Introduction to Plant Diversity
44.6K
From Water to Land
44.6K
02:11The Roles of Bacteria and Fungi in Plant Nutrition
35.3K
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.
35.3K
01:57Adaptations that Reduce Water Loss
25.5K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.5K
02:35Key Elements for Plant Nutrition
18.7K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.7K