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相关概念视频

Ecological Succession02:17

Ecological Succession

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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...
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Light Acquisition02:16

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Plant Breeding and Biotechnology01:59

Plant Breeding and Biotechnology

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Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
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Threats to Biodiversity01:50

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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...
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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.
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相关实验视频

Updated: Jan 13, 2026

JenaTron - An Experimental Approach to Study the Effects of Plant History and Soil History on Grassland Ecosystem Functioning
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未来的西藏草原将减少:从建设性草物种的新见解

Guoyong Tang1, Qingwan Li1,2,3, Shunbin Wang1

  • 1Chuxiong Normal University, Chuxiong, China.

iScience
|January 7, 2026
PubMed
概括
此摘要是机器生成的。

由于气候变化,到2060年,西藏草原面临预计4.6%的下降. 虽然生产性草原减少,但野生动物息地可能会扩大,影响牧民生计和生物多样性.

关键词:
环境科学环境科学物理地理 物理地理植物生态学 植物生态学

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Measuring Stolons and Rhizomes of Turfgrasses Using a Digital Image Analysis System
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相关实验视频

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Measuring Stolons and Rhizomes of Turfgrasses Using a Digital Image Analysis System
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A CO2 Concentration Gradient Facility for Testing CO2 Enrichment and Soil Effects on Grassland Ecosystem Function
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科学领域:

  • 生态生态学 生态生态学
  • 气候变化科学 气候变化科学
  • 保护生物学 保护生物学

背景情况:

  • 西藏的草原是一个关键的生态系统,支持牧民生计和野生动物.
  • 在气候变化和人类压力下,未来的草原分布尚未得到充分理解.

研究的目的:

  • 使用物种级建模框架,预测西藏草原未来的空间分布.
  • 评估气候变化对草原动态的影响,并确定牧场和生物多样性之间的权衡.

主要方法:

  • 开发了一种创新的物种级建模框架.
  • 在各种变暖情景下模拟了44种构造性草的未来空间分布.
  • 分析了草原总面积,生产性草原和野生动物息地的草原的预测变化.

主要成果:

  • 预计到2060年,草原总面积将净减少4.6%,预计到2060年,草原总面积将减少4.6%.
  • 生产性草原预计将减少6.7%,而野生动物息地的草原可能会扩大6.6%.
  • 在更极端的变暖情景下 (2°C/世纪或5°C/世纪) 预计会有更大的草原损失.

结论:

  • 气候变化给西藏草原的牧场生产力带来了挑战.
  • 预计的变化可能会通过扩大息地来造福西藏野生动物.
  • 结果为在高海拔生态系统中平衡牧场可持续性和生物多样性保护提供了洞察力.