2014年9月10日 · To address this knowledge gap, we synthesized available literature on tundra roots, including their distribution, dynamics and contribution to ecosystem carbon and nutrient fluxes, and highlighted key aspects of their representation in terrestrial biosphere models.

2020年10月2日 · We investigated the relationships of 11 fine root traits of 20 sub-arctic tundra meadow plant species and soil microbial community composition, using phospholipid fatty acids (PLFAs) and high-throughput sequencing.

2024年1月25日 · We investigated the relationships between RAF, species-specific root traits, and uptake of N from the permafrost boundary by tundra plants experimentally warmed for nearly three decades at Toolik Lake, Alaska. Warming increased acquisitive root traits of nonmycorrhizal and mycorrhizal plants.

An estimated of root turnover on an ecosystem basis is about 100 g ° m — 2 ° yr — 2, or 25% of the live root biomass. Species with the shallowest and longest lived roots have the greatest weight per unit length of root, and vice versa.

2016年12月9日 · Grass, forb, and deciduous shrub tundra have deeper root systems (~20 cm), and sedge tundra has the deepest roots (~28 cm). This data set casts doubt on land model PFT classifications for arctic tundra.

2014年9月1日 · To address this knowledge gap, we synthesized available literature on tundra roots, including their distribution, dynamics and contribution to ecosystem carbon and nutrient fluxes, and...

2014年9月10日 · Plant roots play a critical role in ecosystem function in arctic tundra, but root dynamics in these ecosystems are poorly understood. To address this knowledge gap, we synthesized available literature on tundra roots, including their distribution, dynamics and contribution to ecosystem carbon and nutrient fluxes, and highlighted key aspects of ...

2024年12月3日 · Plants such as arctic poppy have a shallow but wide root system, allowing it to collect water from a large area. It thrives in rocky or gravelly soil. Another example is the lichen, which uses root-like structures called rhizines to anchor itself to rocks and absorb moisture directly from the air.

2014年9月10日 · Arctic tundra is characterized by short-statured plant communities underlain by carbon (C)-rich soils and permafrost. Ecosystem C and nutrient cycles in tundra are driven by complex interactions between plants and their environment. However, root dynamics are one of the least understood aspects of plant growth in the Arctic.

In wet arctic tundra, by far the greater part of live vascular plant material is below the surface of the ground and above the upper level of permafrost. In this cold, narrow zone are the perennating storage and absorption systems of the dominant sedges and grasses.