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甘肃省暖水村化肥使用现状

方祈安、姜日星、金成易、陈佳合(排名不分先后)

暖水村,坐落于甘肃省武山县西南部。这里水源充沛,茂林成荫,牛羊成群。全村共有219户,合1032人,其中有70余户家庭为种植户。当地村民多为妇女和老人,以种植为生,青壮年多选择外出务工,获得经济收入。由于地处山顶,海拔较高,当地种植作物的种类受到限制,主要种有油菜700余亩、小麦600余亩、苦荞约180亩,人们日出而作,日落而息。

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Managing fish stocks shared by nations must focus on the impacts of climate change

The exploitation of marine species worsens when the fish stock is shared by countries as opposed to when it is contained within a single exclusive economic zone. (Shutterstock) Juliano Palacios Abrantes, University of British Columbia Shared fish stocks of hundreds of marine species have been historically exploited by many countries across the world. As oceans get warmer and marine species move across international borders toward … Continue reading Managing fish stocks shared by nations must focus on the impacts of climate change

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When is a species really extinct?

Dodos have been extinct for centuries, but it’s not a simple matter to definitively designate a species as extinct. (Shutterstock) Arne Mooers, Simon Fraser University https://narrations.ad-auris.com/widget/the-conversation-canada/when-is-a-species-really-extinct As the saying goes: “extinction is forever.” The list of extinct animals, like Steller’s sea cow, the Tasmanian wolf and the dodo, is depressing. And despite various efforts, extinction seems final. But when does extinction start? That would seem … Continue reading When is a species really extinct?

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The Amazon rainforest is disappearing quickly — and threatening Indigenous people who live there

A child from the Mayuruna ethnic group stands on a pier on the banks of the Atalaia do Norte River in Amazonas state, Brazil, on June 12, 2022. Federal police and military forces are searching and investigating the disappearance of British journalist Dom Phillips and Indigenous affairs expert Bruno Araujo Pereira. (AP Photo/Edmar Barros) Félix Bhérer-Magnan, Université Laval Forests throughout the world are shrinking year … Continue reading The Amazon rainforest is disappearing quickly — and threatening Indigenous people who live there

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Restoring the Great Lakes: After 50 years of US-Canada joint efforts, some success and lots of unfinished business

Children participate in a water fight in Lake Ontario in Mississauga, Ontario, during a heat wave on June 5, 2021. Zou Zheng/Xinhua via Getty Images Daniel Macfarlane, Western Michigan University The Great Lakes cover nearly 95,000 square miles (250,000 square kilometers) and hold over 20% of Earth’s surface fresh water. More than 30 million people in the U.S. and Canada rely on them for drinking … Continue reading Restoring the Great Lakes: After 50 years of US-Canada joint efforts, some success and lots of unfinished business