Climate and Biome of /kr/
Preface
Be noted that this is merely a speculation based on what I know of natural phenomena and climate, and people from /kr/ are free to change or reject anything that is listed here, especially when supernatural causes are involved.
Geology
The entirety of /kr/ is located on the nijiKR plate, and most of its land is considered orogen in the geologic province map. According to tectonic analysis, it is a relatively stationary, presumably continental plate in the process of being subducted under Major Niji Plate and Southern Neutral Plate. As the /kr/ orogeny does not correspond to any active convergent plate boundary, it can be assumed that the orogeny forming /kr/ is the remnant of old fold mountains that has since been weathered down. This is most similar to the Urals and the Appalachians in our world.
The implication of this is that the mountain ridges that forms /kr/ used to be much taller, but have since been weathered down significantly in the hundreds of millions of years after active mountain formation had ceased. As such, the majority of rock in /kr/ will be semdimentary rock or their metamorphised counterpart, although weather-resistant igneous rocks might still present in less exposed regions.
Climate
Owing to its high latitude, most of /kr/ has a continental climate. This is roughly subdivided into warm-summer humid continental climate (Dfb) in the northern coast, and subarctic climate (Dfc) in the southern coast. In the western coast, a weak ocean current through the strait results in a slightly more temperate subpolar oceanic climate (Cfc), although its difference is not very significant.
Sandwiched between temperate and polar sea with no significant mountains, intense weather such as thunderstorm and blizzards can be common around /kr/.
Biome
Due to its generally cold climate, the majority of /kr/ will likely be wooded. In the south, the colder weather means it will be dominated by boreal forest, primarily evergreen conifers due to their higher resistance to cold weather. As latitude decreases, temperature increases accordingly, allowing for more and more deciduous broadleaves to survive alongside conifers. In the northern coast, the relatively warm weather will lead to a mixed grassland and primarily broadleaf woodland, as the higher water evaporation rate leads to some area too dry to support unbroken forest development. Due to the more moderate weather, the western coast will have a mixed broadleaf and conifer forest similar to central /kr/.
Crops
The ideal primary food source of /kr/ would be cold-resistant crops such as barley, oat, rye, buckwheat, and potato. Wheat, maize, and, to a lesser degree, rice can be cultivated in irrigated soil in the warmest part of the country, but limited supply might render them prohibitively expensive. Apple, plums, and pears will likely be the most common fruits in /kr/, supplemented by cool-season vegetables such as radish, turnips, cabbages, onions, and lettuce, although especially in the subarctic south, preservation might be necessary to sustain human life through the cold, long winter. Alternatively, animal-derived food source such as fishing and hunting of bears and reindeers can provide much-needed protein to the local population.
The most productive land in /kr/ will likely be northern Mujigae due to a combination of relatively warm weather, higher percipitation, favorable soil condition, and the likely presence of alluvial plains. The rest of the northern coast is similarly suitable for intensive agriculture, especially with the introduction of irrigation. The southern coast, on the other hand, is less likely to sustain extensive agricultural activities due to its colder weather and poor soil fertility, although cultivation of cold-resistant crops and use of fertiliser could mitigate these factors.
Mineral Resources
/kr is fairly rich in ore deposits due to its orogenic geology, and the weathering of ancient mountains also expose minerals that are usually buried too deep to be exploited.
Due to prolonged weathering, the majority of rock that once formed the mountain ridges have bee eroded. The broken-down sediment eventually underwent lithification, forming the lowland area of /kr/. Common examples of this kind of sedimentary rocks include sandstone, mudrock, limestone, and dolomite. The same process also concentrated insoluable sediments, resulting in deposits of haematite and limonite. Most of them originated from mafic igneous rocks such as basalt and gabbro, and some of these rocks survived to this day in isolated patches. Granite, formations are also present due to their extreme resistance to weathering.
The weathering also exposed deep-buried metamorphic rocks that formed during the ancient orogeny. In addition to rocks like greenschist and biotite, the same process also create coal with high carbon content, such as bituminous coal and anthracite, their relative rarity offset by their high price and potential (future) use in metallurgy and military.