全球变暖导致北极农业吗?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 07 - 10 - t21:02:35z //www.hoelymoley.com/feeds/question/12207 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/12207 9 全球变暖导致北极农业吗? sbl //www.hoelymoley.com/users/10941 2017 - 09 - 02 - t14:32:18z 2020 - 10 - 31 - t19:49:45z < p >据我所知,全球变暖将使种植粮食困难得多像美国中西部地区,因为对于大多数作物温度会过高。与此同时,北极和南极地区将加热和冻土融化。将阿拉斯加、西伯利亚和加拿大北部然后成为适合大规模农业?如果是这样,这足以弥补损失的生产在温暖的地区?还是有其他因素在这些领域,这将使农业不切实际? < / p > //www.hoelymoley.com/questions/12207/-/12211 # 12211 4 基思·麦克回答的全球变暖导致北极农业吗? 基思·麦克 //www.hoelymoley.com/users/6535 2017 - 09 - 02 - t22:29:04z 2020 - 10 - 19 - t22:18:41z < p >加拿大的农业地区:< a href = " https://i.stack.imgur.com/XRR0c.jpg " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/XRR0c.jpg " alt = "在这里输入图像描述" / > < / >位于合适的土壤类型:< a href = " https://i.stack.imgur.com/4OhJ9.jpg " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/4OhJ9.jpg " alt = " http://www.fao.org/ag/agp/agpc/doc/counprof/canada/pics/Figure%204b.jpg " / > < / > < / p > < p >大部分粮食面积< a href = " https://en.wikipedia.org/wiki/Canadian_Shield #生态”rel = " nofollow noreferrer " >加拿大地盾< / >(下面红色部分):< / p > < blockquote > < p >当前盾是很薄的表面表达土壤躺在基岩之上,有许多裸露的露头。这种安排是由严重的冰川作用在冰河时代,它覆盖了盾牌和岩石刮干净。加拿大地盾的低地,有一个非常密集的土壤不适合造林;它还包含许多湿地和沼泽(沼泽地)。其他地区土壤粗不保湿好,与全年冻土冻。< / p > < /引用> < p >我认为“粗soil"是< a href = " https://en.wikipedia.org/wiki/Till " rel = " nofollow noreferrer " >冰碛物< / >。< a href = " https://i.stack.imgur.com/s0kNs.jpg " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/s0kNs.jpg " alt = "在这里输入图像描述" / > < / > < / p > < p >这是冻土融化。我不认为这将是适合农业。< a href = " https://i.stack.imgur.com/ZwzM4.jpg " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/ZwzM4.jpg " alt = "在这里输入图像描述" / > < / > < / p > < p > < a href = " https://act-adapt.org/wp-content/uploads/2013/07/07-13-CFS-Background-WEB.pdf " rel = " nofollow noreferrer " >气候变化适应和加拿大的作物和食品供应(2013)< / >(122页)讨论了变暖,降水、土壤和其他因素。< / p > < blockquote > < p >有一定潜力的北方扩张农业由于热量和水分的变化(西部大草原),尽管大多数的这些土地将保持略微适合耕种,因为恶劣的土壤条件。< / p > < /引用> < p >编辑:< a href = " https://i.stack.imgur.com/EYX1i.jpg " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/EYX1i.jpg " alt = "在这里输入图像描述" / > < / >一个沿着麦肯齐三角洲侵蚀海岸线使冻土。照片:罗杰·麦克劳德/加拿大自然资源< / p > < p > <强>高分辨率版本< /强> < a href = " https://thenarwhal。ca/arctic-tundra-is-80-per-cent-permafrost-what-happens-when-it-thaws/" rel="nofollow noreferrer">Arctic tundra is 80 per cent permafrost. What happens when it thaws? - The Narwhal:
https://thenarwhal.ca/wp-content/uploads/2019/03/Coastal-Erosion-Permafrost-Roger-McLeod-NRCan--e1551913545654-1920x1080.jpeg

Edit, Oct., 2020:

Canada could be a huge climate change winner when it comes to farmland

enter image description here In this map from the study, areas that transition from no current suitability for major commodity crops to suitability for one or more crops are depicted in blue, while currently uncultivated areas that transition to suitability for multiple major commodity crops are shown in red. (Hannah et al, 2020)

KC acknowledged the study looked only at climate as a factor when determining where crops could be grown in the future, and didn't take into account things like soil quality.

Soil scientist David Burton of Dalhousie University, who wasn't involved in the study, says that could have a big impact on how much of the potential new farmland is actually arable. "The soils of Southern Canada have taken 10,000 years to develop," he said. "Rapid change wouldn't necessarily make soils in Northern Canada suitable for production."

Johanna Wandel, an associate professor of geography at the University of Waterloo who edited a book called Farming in a Changing Climate, agrees the soil in much of Canada would likely be unsuitable for growing crops, as it's too rocky or acidic.

//www.hoelymoley.com/questions/12207/-/12624 # 12624 2 回答user11318为全球变暖导致北极地区农业吗? user11318 //www.hoelymoley.com/users/0 2017 - 11 - 07 - t00:35:16z 2017 - 11 - 07 - t00:35:16z < p >可能会带来好处看看我们知道农业在< a href = " https://en.wikipedia.org/wiki/Medieval_Warm_Period " rel = " nofollow noreferrer " >中世纪暖期< / >这个问题开始得到一个答案。c950-c1250,在这个时期,有一个< a href = " http://study.com/academy/lesson/the-medieval-warm-period-and-new-agricultural-technologies.html " rel = " nofollow noreferrer " > < / >在欧洲农业革命,有证据表明< a href = " http://sciencenordic.com/vikings-grew-barley-greenland " rel = " nofollow noreferrer " >大麦生产由维京人在格陵兰岛< / >。< / p > < p > < a href = " https://i.stack.imgur.com/WbSFJ.png " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/WbSFJ.png " alt = "在这里输入图像描述" > < / > < / p > < p >授予可能仍有一些争论是多么温暖的中世纪温暖期,尤其是相比,许多预计将来会发生什么,但它似乎有大量的证据表明,在中世纪,有大量更多的农业发生在高纬度地区。这并不一定回答是否北极地区将适合大规模农业在未来,但是如果历史是一个指南,除了lattitudes北部与合适的土壤将变得更有效率。< / p >
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