Fine root biomass of Scots pine stands differing in age and soil fertility in southern Finland.
Fine root biomass of Scots pine stands differing in age and soil fertility in southern Finland.
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DOI：
10.1093/treephys/19.12.823
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发表时间：
1999-10
期刊：
影响因子：
4
通讯作者：
Petteri Vanninen;Annikki Mäkelä
中科院分区：
文献类型：
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作者：
Petteri Vanninen;Annikki Mäkelä
将芬兰南部矿质土壤中小细根和大细根（直径分别小于或等于2 mm和2-5 mm）的生物量与相同林分中估计的叶生物量进行了比较。研究材料收集站不同的网站肥力和年龄。土壤肥力较高的土壤腐殖质层比肥力较低的土壤腐殖质层深。细根密度在腐殖质中大于在矿质土壤中，并且细根密度在矿质和腐殖质层中在较不肥沃的站点大于在较肥沃的站点。虽然细根生物量的量与任何常见的记录站的特点，小细根生物量是成比例的两个站点类型的树叶生物量。比例系数是较大的较低的肥沃的网站比更肥沃的网站，支持功能平衡的理论。大细根不能建立类似的关系。细根：针叶质量比随林龄增加的趋势观察到的立场上肥沃的网站。
The biomass of small and large fine roots (</= 2 mm and 2-5 mm in diameter, respectively) in mineral soils of southern Finland was compared with estimated foliage biomass in the same stands. Study material was collected from stands differing in site fertility and age. The humus layer was deeper at the more fertile sites than at the less fertile sites. Fine root density was greater in humus than in mineral soil, and the fine root density in mineral and humus layers was greater at the less fertile sites than at the more fertile sites. Although the amount of fine root biomass was not correlated with any commonly recorded stand characteristic, small fine root biomass was proportional to foliage biomass for both site types. The coefficient of proportionality was larger for the less fertile sites than for the more fertile sites, supporting the theory of functional balance. A similar relationship could not be established for the large fine roots. A trend of increasing fine root:needle mass ratio with stand age was observed for stands on the less fertile sites.