Growth, Turnover, and Respiration Rates of Roots and Tillers in Tundra Graminoids
Growth, Turnover, and Respiration Rates of Roots and Tillers in Tundra Graminoids
复制标题
苔原禾本科植物根和分蘖的生长、周转和呼吸速率
DOI：
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发表时间：
1978
期刊：
影响因子：
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通讯作者：
G. Shaver
中科院分区：
文献类型：
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作者：
W. D. Billings;K. Peterson;G. Shaver
在潮湿的北极苔原上，大部分活的维管植物物质都在地表之下和永久冻土层之上。在这个寒冷、狭窄的地带，是占优势的莎草和禾本科植物的常年储存和吸收系统。这些越冬系统在6月融雪和8月第一次日落之间的短暂寒冷季节迅速产生和支持光合作用叶片。要了解苔原的生产力，需要了解有多少能量分配给根和根茎，以及这些能量如何用于整个植物的生长和繁殖。
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. These over-wintering systems quickly produce and support photosynthetic leaves during the short, cold season between snowmelt in June and the first sunsets of August. An understanding of tundra productivity requires a knowledge of how much energy is allocated to roots and rhizomes, and how this energy is used in growth and reproduction of the whole plant.