< 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
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.