瑞典森林土壤真菌部分中的铯-137

137Cs in the fungal compartment of Swedish forest soils.

作者信息

Vinichuk Mykhaylo M, Johanson Karl J, Taylor Andy F S

机构信息

Department of General Ecology, University of Agriculture and Ecology, Stary Blvd. 7, Zhytomyr 10001, Ukraine.

出版信息

Sci Total Environ. 2004 May 5;323(1-3):243-51. doi: 10.1016/j.scitotenv.2003.10.009.

DOI:10.1016/j.scitotenv.2003.10.009

PMID:15081731

Abstract

The (137)Cs activities in soil profiles and in the mycelia of four ectomycorrhizal fungi were studied in a Swedish forest in an attempt to understand the mechanisms governing the transfer and retention of (137)Cs in forest soil. The biomass of four species of fungi was determined and estimated to be 16 g m(-2) in a peat soil and 47-189 g m(-2) in non-peat soil to the depth of 10 cm. The vertical distribution was rather homogeneous for two species (Tylospora spp. and Piloderma fallax) and very superficial for Hydnellum peckii. Most of the (137)Cs activity in mycelium of non-peat soils was found in the upper 5 cm. Transfer factors were quite high even for those species producing resupinate sporocarps. In the peat soil only approximately 0.3% of the total (137)Cs inventory in soil was found in the fungal mycelium. The corresponding values for non-peat soil were 1.3, 1.8 and 1.9%.

摘要

在瑞典的一片森林中，研究了土壤剖面和四种外生菌根真菌菌丝体中的¹³⁷Cs活度，以试图了解¹³⁷Cs在森林土壤中转移和留存的机制。测定了四种真菌的生物量，估计在泥炭土中为16 g m⁻²，在非泥炭土中至10 cm深度为47 - 189 g m⁻²。两种真菌（Tylospora spp.和Piloderma fallax）的垂直分布相当均匀，而Hydnellum peckii的分布非常浅表。非泥炭土菌丝体中的大部分¹³⁷Cs活度位于上部5 cm。即使对于那些产生平伏子实体的物种，转移因子也相当高。在泥炭土中，真菌菌丝体中仅发现土壤中¹³⁷Cs总量的约0.3%。非泥炭土的相应值为1.3%、1.8%和1.9%。