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Studies on Material Cycling in Evergreen Broad-LeavedForest Ecosystem in Hangzhou: Ⅳ. Uptake, Storageand Return of S by Vegetation

Studies on Material Cycling in Evergreen Broad-Leaved Forest Ecosystem in Hangzhou:Ⅳ.Uptake,Storage and Return of S by Vegeta
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摘要 The work was carried out to study the uptake, storage and return of S in the evergreen broad-leaved forestecosystem of Hangzhou in Zhejiang Province, China, based on the annual increments of plants and S contentsper unit weight plant organs as well as the measured data about the biological return and decomposition.Results showed that the vegetation layer had an annual S uptake of 55.02kg ha ̄(-1) , which accounted for 15.8% of the total S storage in the vegetation layer. The S uptake was the highest in the arbor layer but thelowest in the shrub layer. The biological return of S was 50% higher than the biological uptake, indicatingthe relatively high cycling efficiency of S. Nevertheless, S had a relatively low rate of biological release, so thatS trended to accumulate in the litter layer. S taken up by plants each year came mostly from precipitationand the reserve of soil. StudiesonMaterialCyclinginEvergreenBroad-LeavedForestEcosysteminHangzhou:Ⅳ.Uptake,StorageandReturnofSbyVegetationJIANGQIU-YI,...
出处 《Pedosphere》 SCIE CAS CSCD 1994年第1期53-58,共6页 土壤圈(英文版)
关键词 biological cycling ECOSYSTEM evergreen broad-leaved forest S 杭州 常绿阔叶林 森林生态系统 物质循环 植被 S吸收 硫贮存 硫循环
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