农业强化和生态系统特性
P A Matson1, W J Parton, A G Power
1Ecosystem Sciences Division, Department of Environmental Science, Policy and Management, University of California, Berkeley, CA, USA.
概括
农业的强化促进了粮食生产,但也改变了生态系统. 基于生态的管理可以增强可持续农业和减少对环境的破坏.
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:
- 全球农业扩张和强化是环境变化的关键驱动力.
- 现代农业,通过高产品种,肥料,灌和农药,显著增加了粮食生产.
- 这些做法改变了生态系统的动态,资源的可用性,并可能导致不利的环境影响.
研究的目的:
- 突出农业集约化对环境的影响.
- 引入以生态为基础的管理作为可持续的替代方案.
- 倡导平衡粮食生产与生态健康的战略.
主要方法:
- 审查当前的农业实践及其对环境的影响.
- 分析生物相互作用和资源可用性的变化.
- 对可持续性的生态基础管理策略的评估.
主要成果:
- 强化实践对生态系统和资源可用性产生重大影响.
- 负面的环境影响可以是局部,区域和全球.
- 基于生态的管理为可持续农业提供了一条途径.
结论:
- 可持续的农业生产需要整合生态原则.
- 基于生态的管理可以减轻农业对环境的外部影响.
- 为了长期的粮食安全和环境健康,平衡加强与生态考虑是至关重要的.
相关概念视频
Ecological Disturbance
An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.Ecological disturbances can be caused by an event as small as the trampling of underbrush to an incident as wide-ranging as a forest...
The Soil Ecosystem
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:
Soil Microbial Ecology
Soil microbial ecology is defined by highly diverse, spatially structured communities that drive nutrient cycling, organic matter turnover, and overall ecosystem stability. Although a gram of soil can contain thousands of bacterial and archaeal taxa, the ecological processes they mediate are even more crucial for sustaining terrestrial life.Microhabitats and NichesSoil is a heterogeneous mixture of minerals, organic matter, water, and air. Microbes inhabit distinct microhabitats formed by...
What is an Ecosystem?
Overview
Habitat Fragmentation
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
Ecological Succession
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...


