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气候变暖将显著影响粮食产量

2025-06-23 00:06 by 巨龙之夜

根据发表于《自然》的全球作物产量分析,到本世纪末,每变暖 1℃,人均可用粮食每天将减少约121千卡。研究论文作者、美国伊利诺伊大学厄巴纳-香槟分校的 Andrew Hultgren 说,根据目前轨迹,在 3℃ 的变暖情景下,“这相当于每个人都不再用早餐”。Hultgren 和同事收集了世界上六大主粮作物的产量数据。这些作物提供了全球人类所需热量的 2/3 以上。他们发现,对于除水稻外的所有作物,高温会造成巨大的损失,因为水稻在更暖的夜晚生长得更好。根据预测,到本世纪末,全球变暖情况下玉米产量比没有全球变暖的情况下降 12% 或28%,具体下降程度取决于温室气体排放量是适中还是非常高。如果农民不采取措施适应气候变化,那么在本世纪末变暖程度高的情景下,作物损失将增加约1 /3。不过,研究人员指出,即便采取了上述农业适应措施,也不太可能弥补气候变化造成的巨大作物损失。

doi.org/10.1038/s41586-025-09085-w
中国科学报:气候变暖3℃,每个人都将减少一顿早餐

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气候变暖将显著影响粮食产量

2025-06-23 00:06 by 巨龙之夜

根据发表于《自然》的全球作物产量分析,到本世纪末,每变暖 1℃,人均可用粮食每天将减少约121千卡。研究论文作者、美国伊利诺伊大学厄巴纳-香槟分校的 Andrew Hultgren 说,根据目前轨迹,在 3℃ 的变暖情景下,“这相当于每个人都不再用早餐”。Hultgren 和同事收集了世界上六大主粮作物的产量数据。这些作物提供了全球人类所需热量的 2/3 以上。他们发现,对于除水稻外的所有作物,高温会造成巨大的损失,因为水稻在更暖的夜晚生长得更好。根据预测,到本世纪末,全球变暖情况下玉米产量比没有全球变暖的情况下降 12% 或28%,具体下降程度取决于温室气体排放量是适中还是非常高。如果农民不采取措施适应气候变化,那么在本世纪末变暖程度高的情景下,作物损失将增加约1 /3。不过,研究人员指出,即便采取了上述农业适应措施,也不太可能弥补气候变化造成的巨大作物损失。

doi.org/10.1038/s41586-025-09085-w
中国科学报:气候变暖3℃,每个人都将减少一顿早餐

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Export WhatsApp stickers to Telegram on Android

From the Files app, scroll down to Internal storage, and tap on WhatsApp. Once you’re there, go to Media and then WhatsApp Stickers. Don’t be surprised if you find a large number of files in that folder—it holds your personal collection of stickers and every one you’ve ever received. Even the bad ones.Tap the three dots in the top right corner of your screen to Select all. If you want to trim the fat and grab only the best of the best, this is the perfect time to do so: choose the ones you want to export by long-pressing one file to activate selection mode, and then tapping on the rest. Once you’re done, hit the Share button (that “less than”-like symbol at the top of your screen). If you have a big collection—more than 500 stickers, for example—it’s possible that nothing will happen when you tap the Share button. Be patient—your phone’s just struggling with a heavy load.On the menu that pops from the bottom of the screen, choose Telegram, and then select the chat named Saved messages. This is a chat only you can see, and it will serve as your sticker bank. Unlike WhatsApp, Telegram doesn’t store your favorite stickers in a quick-access reservoir right beside the typing field, but you’ll be able to snatch them out of your Saved messages chat and forward them to any of your Telegram contacts. This also means you won’t have a quick way to save incoming stickers like you did on WhatsApp, so you’ll have to forward them from one chat to the other.

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Telegram is a free app and runs on donations. According to a blog on the telegram: We believe in fast and secure messaging that is also 100% free. Pavel Durov, who shares our vision, supplied Telegram with a generous donation, so we have quite enough money for the time being. If Telegram runs out, we will introduce non-essential paid options to support the infrastructure and finance developer salaries. But making profits will never be an end-goal for Telegram.

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