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写真 | 2019年 05月 7日 02:45 JST

Scientists warn of grave impacts from loss of natural world

The accelerating loss of plant and animal species will have grave consequences for people worldwide, scientists warned on Monday in the largest comprehensive study into the impact of modern civilization on nature. Here are some of the key findings from the report, which was produced by the Intergovernmental Panel for Biodiversity and Ecosystem Services, which is comprised of 130 countries.

REUTERS/David Gray

The accelerating loss of plant and animal species will have grave consequences for people worldwide, scientistmore

The accelerating loss of plant and animal species will have grave consequences for people worldwide, scientists warned on Monday in the largest comprehensive study into the impact of modern civilization on nature. Here are some of the key findings from the report, which was produced by the Intergovernmental Panel for Biodiversity and Ecosystem Services, which is comprised of 130 countries. REUTERS/David Gray
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PLANTS AND ANIMALS ACCELERATING LOSS: Nature is declining globally at rates unprecedented in human history, leaving a million species now at risk of extinction, some within decades. 

REUTERS/Darrin Zammit Lupi

PLANTS AND ANIMALS ACCELERATING LOSS: Nature is declining globally at rates unprecedented in human history, lemore

PLANTS AND ANIMALS ACCELERATING LOSS: Nature is declining globally at rates unprecedented in human history, leaving a million species now at risk of extinction, some within decades. REUTERS/Darrin Zammit Lupi
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INDIGENOUS PEOPLES: Nature managed by indigenous peoples and local communities is under increasing pressure but generally declining less rapidly than in other lands. 

REUTERS/Adriano Machado

INDIGENOUS PEOPLES: Nature managed by indigenous peoples and local communities is under increasing pressure bumore

INDIGENOUS PEOPLES: Nature managed by indigenous peoples and local communities is under increasing pressure but generally declining less rapidly than in other lands. REUTERS/Adriano Machado
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SPECIES DECLINE: The average abundance of native species in most major land-based habitats has fallen by at least 20 percent, mostly since 1900, and there has been a 30 percent reduction in global terrestrial habitat integrity caused by habitat loss and deterioration. 

REUTERS/Siphiwe Sibeko

SPECIES DECLINE: The average abundance of native species in most major land-based habitats has fallen by at lemore

SPECIES DECLINE: The average abundance of native species in most major land-based habitats has fallen by at least 20 percent, mostly since 1900, and there has been a 30 percent reduction in global terrestrial habitat integrity caused by habitat loss and deterioration. REUTERS/Siphiwe Sibeko
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EXPONENTIAL RATES: The current rate of global species extinction is tens to hundreds times higher than the average over the last 10 million years, and the rate is accelerating. 

REUTERS/Darren Whiteside

EXPONENTIAL RATES: The current rate of global species extinction is tens to hundreds times higher than the avemore

EXPONENTIAL RATES: The current rate of global species extinction is tens to hundreds times higher than the average over the last 10 million years, and the rate is accelerating. REUTERS/Darren Whiteside
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MARINE CREATURES: Around 40 percent of amphibian species are threatened with extinction, along with 33 percent of reef forming corals, sharks and shark relatives, and more than 33 per cent of marine mammals. 

REUTERS/Hugh Gentry

MARINE CREATURES: Around 40 percent of amphibian species are threatened with extinction, along with 33 percentmore

MARINE CREATURES: Around 40 percent of amphibian species are threatened with extinction, along with 33 percent of reef forming corals, sharks and shark relatives, and more than 33 per cent of marine mammals. REUTERS/Hugh Gentry
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CLIMATE CHANGE HOLISTIC APPROACH: The world cannot save the climate without saving biodiversity and vice versa, since the natural systems that sustain life on Earth are intimately interconnected. 

REUTERS/Gene Blevins

CLIMATE CHANGE HOLISTIC APPROACH: The world cannot save the climate without saving biodiversity and vice versamore

CLIMATE CHANGE HOLISTIC APPROACH: The world cannot save the climate without saving biodiversity and vice versa, since the natural systems that sustain life on Earth are intimately interconnected. REUTERS/Gene Blevins
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NATURE-BASED SOLUTIONS: Many of the most promising responses to climate change, such as protecting and restoring forests and wetlands, sustainable agriculture and respecting indigenous knowledge, also protect biodiversity and human wellbeing. 

REUTERS/Ricardo Moraes

NATURE-BASED SOLUTIONS: Many of the most promising responses to climate change, such as protecting and restorimore

NATURE-BASED SOLUTIONS: Many of the most promising responses to climate change, such as protecting and restoring forests and wetlands, sustainable agriculture and respecting indigenous knowledge, also protect biodiversity and human wellbeing. REUTERS/Ricardo Moraes
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ACCELERATING EXTINCTION: Using climate scenarios generated by the United Nations' Intergovernmental Panel on Climate Change, the authors found that 16 per cent of species would be at risk of extinction if the world follows its current trajectory of 4.3 degrees Celsius of warming compared to pre-industrial levels. 

REUTERS/David Gray

ACCELERATING EXTINCTION: Using climate scenarios generated by the United Nations' Intergovernmental Panel on Cmore

ACCELERATING EXTINCTION: Using climate scenarios generated by the United Nations' Intergovernmental Panel on Climate Change, the authors found that 16 per cent of species would be at risk of extinction if the world follows its current trajectory of 4.3 degrees Celsius of warming compared to pre-industrial levels. REUTERS/David Gray
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PROFOUND IMPACTS: Even if the world manages to limit warming to 1.5 to 2 degrees Celsius, the ranges of most terrestrial species are projected to shrink profoundly. 

REUTERS/Baz Ratner

PROFOUND IMPACTS: Even if the world manages to limit warming to 1.5 to 2 degrees Celsius, the ranges of most tmore

PROFOUND IMPACTS: Even if the world manages to limit warming to 1.5 to 2 degrees Celsius, the ranges of most terrestrial species are projected to shrink profoundly. REUTERS/Baz Ratner
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LIMITED WARNING: Many of the policies that scientists hope could limit temperature rises to 1.5 degrees would also deliver the greatest chance of preserving the most biodiversity possible. 

REUTERS/Baz Ratner

LIMITED WARNING: Many of the policies that scientists hope could limit temperature rises to 1.5 degrees would more

LIMITED WARNING: Many of the policies that scientists hope could limit temperature rises to 1.5 degrees would also deliver the greatest chance of preserving the most biodiversity possible. REUTERS/Baz Ratner
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FOOD, AGRICULTURE AND FORESTS PRIME CULPRIT: Land clearing for farming is a key driver of biodiversity loss. The sector is also a major source of greenhouse gas emissions through land clearing, crop production and fertilization - with animal-based foods the biggest contributors. 

REUTERS/Wahyu Putro A/Antara Foto

FOOD, AGRICULTURE AND FORESTS PRIME CULPRIT: Land clearing for farming is a key driver of biodiversity loss. Tmore

FOOD, AGRICULTURE AND FORESTS PRIME CULPRIT: Land clearing for farming is a key driver of biodiversity loss. The sector is also a major source of greenhouse gas emissions through land clearing, crop production and fertilization - with animal-based foods the biggest contributors. REUTERS/Wahyu Putro A/Antara Foto
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DIMINISHING SOILS: 23 percent of land areas have seen a reduction in agricultural productivity due to land degradation, which could be mitigated by a shift towards restorative farming practices and smallholding, which is better for the environment. 

REUTERS/Ilya Naymushin

DIMINISHING SOILS: 23 percent of land areas have seen a reduction in agricultural productivity due to land degmore

DIMINISHING SOILS: 23 percent of land areas have seen a reduction in agricultural productivity due to land degradation, which could be mitigated by a shift towards restorative farming practices and smallholding, which is better for the environment. REUTERS/Ilya Naymushin
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VANISHING POLLINATORS: 75 percent of global food crop types rely on animal pollination, yet the loss of pollinators caused by intensive farming is putting $235-577 billion worth of annual global crop output at risk. 

REUTERS/Mike Blake

VANISHING POLLINATORS: 75 percent of global food crop types rely on animal pollination, yet the loss of pollinmore

VANISHING POLLINATORS: 75 percent of global food crop types rely on animal pollination, yet the loss of pollinators caused by intensive farming is putting $235-577 billion worth of annual global crop output at risk. REUTERS/Mike Blake
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DARK MONEY: 68 percent of foreign capital invested in the soy and beef sectors, which is driving deforestation in the Amazon, is channeled through tax havens. 

REUTERS/Nacho Doce

DARK MONEY: 68 percent of foreign capital invested in the soy and beef sectors, which is driving deforestationmore

DARK MONEY: 68 percent of foreign capital invested in the soy and beef sectors, which is driving deforestation in the Amazon, is channeled through tax havens. REUTERS/Nacho Doce
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DAMAGING SUBSIDIES: In 2015, an estimated $100 billion of financial support in wealthy OECD countries was used to finance agricultural practices that are potentially harmful to the environment. 

REUTERS/Arnd Wiegmann

DAMAGING SUBSIDIES: In 2015, an estimated $100 billion of financial support in wealthy OECD countries was usedmore

DAMAGING SUBSIDIES: In 2015, an estimated $100 billion of financial support in wealthy OECD countries was used to finance agricultural practices that are potentially harmful to the environment. REUTERS/Arnd Wiegmann
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OCEANS, FISHING AND AQUACULTURE OVER-FISHING: Major marine fish stocks are disappearing due to overfishing; 33 percent of such stocks were being harvested at unsustainable levels in 2015.

REUTERS/Issei Kato

OCEANS, FISHING AND AQUACULTURE OVER-FISHING: Major marine fish stocks are disappearing due to overfishing; 33more

OCEANS, FISHING AND AQUACULTURE OVER-FISHING: Major marine fish stocks are disappearing due to overfishing; 33 percent of such stocks were being harvested at unsustainable levels in 2015. REUTERS/Issei Kato
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INDUSTRIAL SCALE: Industrial fishing fleets are now roving across 55 per cent of the world's ocean area, and sustainable practices are taking place on too small a scale to meaningfully address the over-fishing crisis. 

REUTERS/Mariana Bazo

INDUSTRIAL SCALE: Industrial fishing fleets are now roving across 55 per cent of the world's ocean area, and smore

INDUSTRIAL SCALE: Industrial fishing fleets are now roving across 55 per cent of the world's ocean area, and sustainable practices are taking place on too small a scale to meaningfully address the over-fishing crisis. REUTERS/Mariana Bazo
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BIG BUSINESS: Billions of dollars worth of the annual subsidies awarded to boost the capacity of the world's fishing fleets may have a negative impact on nature. 

REUTERS/Denis Balibouse

BIG BUSINESS: Billions of dollars worth of the annual subsidies awarded to boost the capacity of the world's fmore

BIG BUSINESS: Billions of dollars worth of the annual subsidies awarded to boost the capacity of the world's fishing fleets may have a negative impact on nature. REUTERS/Denis Balibouse
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FEWER FISH: Fish biomass is projected to decrease by 3-25 percent by the end of the century in low and high climate warming scenarios, respectively. 

REUTERS/Toru Hanai

FEWER FISH: Fish biomass is projected to decrease by 3-25 percent by the end of the century in low and high clmore

FEWER FISH: Fish biomass is projected to decrease by 3-25 percent by the end of the century in low and high climate warming scenarios, respectively. REUTERS/Toru Hanai
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DEAD ZONES: Pollution from fertilizers has led to the formation of 400 low oxygen 'dead zones' in coastal waters covering more than 245,000 square kilometres.

REUTERS/David Loh

DEAD ZONES: Pollution from fertilizers has led to the formation of 400 low oxygen 'dead zones' in coastal watemore

DEAD ZONES: Pollution from fertilizers has led to the formation of 400 low oxygen 'dead zones' in coastal waters covering more than 245,000 square kilometres. REUTERS/David Loh
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