what is struggle of plant
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Answer:
Plants Around the World Are Struggling to Grow as Atmosphere Dries Up
Why Global Citizens Should Care
Plant life is declining around the world as climate change intensifies. The United Nations urges countries to achieve the goals of the Paris climate agreement to ensure the long-term survival of wildlife. You can join us in taking action on related issues here.
Plants are struggling to grow around the world because atmospheric water vapor levels are declining, according to a new study published in the journal Science Advances.
The researchers found that plant growth rates declined in 59% of the world’s vegetated areas over the past several decades, with trees displaying thinner rings, plants showing less leaf coverage, and various environments undergoing systemic declines. The team believes that decreasing water vapor levels could be depressing growth rates and hollowing out ecosystems, a trend likely driven by climate change.
Climate change is affecting water vapor levels in at least two ways, according to the report.
As global temperatures increase, the atmosphere needs more water vapor to stabilize. If more water vapor isn’t provided, then a vapor pressure deficit (VPD) forms. Plants interpret this deficit as a drought, and close the pores on their leaves. This in turn diminishes their ability to photosynthesize.
VPDs are worsened by slowing global wind patterns over the world’s oceans that prevent water vapor from being carried onto the land.
Taken together, these two trends have caused VPDs to increase in 53% of the world’s vegetated areas, making it hard for plants to grow at historic levels.
Explanation:
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★ Answer:
Plants are struggling to grow around the world because atmospheric water vapor levels are declining, according to a new study published in the journal Science Advances.
The researchers found that plant growth rates declined in 59% of the world’s vegetated areas over the past several decades, with trees displaying thinner rings, plants showing less leaf coverage, and various environments undergoing systemic declines. The team believes that decreasing water vapor levels could be depressing growth rates and hollowing out ecosystems, a trend likely driven by climate change.
Climate change is affecting water vapor levels in at least two ways, according to the report.
As global temperatures increase, the atmosphere needs more water vapor to stabilize. If more water vapor isn’t provided, then a vapor pressure deficit (VPD) forms. Plants interpret this deficit as a drought, and close the pores on their leaves. This in turn diminishes their ability to photosynthesize.
VPDs are worsened by slowing global wind patterns over the world’s oceans that prevent water vapor from being carried onto the land.
Taken together, these two trends have caused VPDs to increase in 53% of the world’s vegetated areas, making it hard for plants to grow at historic levels.