Wang Lixia, Otgonsuren Burenjargal, Godbold Douglas L
Institute of Forest Ecology, University of Natural Resources and Life Sciences Vienna (BOKU), Peter-Jordan-Straße 82, 1190 Vienna, Austria.
Department of Ecology, Mongolian University of Life Science, Zaisan, Mailbox 57, Khan-Uul district, Ulaanbaator 17024 Mongolia.
Plant Soil. 2017;411(1):467-481. doi: 10.1007/s11104-016-3047-2. Epub 2016 Sep 12.
, and co-exist at the alpine tree line, and can have different mycorrhizal communities. The activity and diversity of mycorrhizal fungi are considered to be important factors in regulation of soil function.
At a tree line site and a lower elevation site in the Austrian Alps, the community structure of ectomycorrhiza on and was determined. The activity of surface enzymes was determined on ectomycorrhizal and ericoid mycorrhizal roots. In soils, the activity of a range of enzymes, nitrogen (N) mineralization and biomass decomposition were determined.
The community structure of the ectomycorrhizal community of and differed strongly, but the average activity of surface enzymes of the ectomycorrhizal communities was similar. A lower root surface enzyme activity was determined on . Soil N-mineralization under was significantly lower than under and . In soil, the activity of a range of enzymes did not differ at the tree line but differed between the tree line and the lower elevation sites.
The different ectomycorrhizal communities on and and ericoid mycorrhizas on support similar ecosystem functions in soil.
高山树线处 、 和 共存，且可能具有不同的菌根群落。菌根真菌的活性和多样性被认为是调节土壤功能的重要因素。
在奥地利阿尔卑斯山的一个树线地点和一个低海拔地点，测定了 和 上外生菌根的群落结构。测定了外生菌根和石楠状菌根根上的表面酶活性。在土壤中，测定了一系列酶的活性、氮（N）矿化作用和生物量分解。
和 的外生菌根群落结构差异很大，但外生菌根群落表面酶的平均活性相似。 上的根表面酶活性较低。 下的土壤氮矿化显著低于 和 下。在土壤中，一系列酶的活性在树线处没有差异，但在树线和低海拔地点之间存在差异。
和 上不同的外生菌根群落以及 上的石楠状菌根在土壤中支持相似的生态系统功能。
