Nonadditive effects of litter mixtures on decomposition and correlation with initial litter N and P concentrations in grassland plant species of northern China
文献类型: 外文期刊
作者: Liu, Ping 1 ; Sun, Osbert J. 2 ; Huang, Jianhui 2 ; Li, Linghao 3 ; Han, Xingguo;
作者机构: 1.Chinese Acad Sci, Inst Bot, Lab Quantitat Veg Ecol, Beijing 100093, Peoples R China
2.Chinese Acad Sci, Inst Bot, Lab Quantitat Veg Ecol, Beijing 100093, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; Shandong Acad Agr Sci, Soil & Fertilizer Inst, Jinan 250100, Shandong, Peoples R China; Beijing Forestry Univ, Coll Nat Resources & Environm, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Inst Bot, Lab Quantitat Veg Ecol, Beijing 100093, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; Shandong Acad Agr Sci, Soil & Fertilizer Inst, Jinan 250100, Shandong, Peoples R China; Beijing Forestry Univ, Coll Nat Resources & Environm, Beijing 1
关键词: degradation;China
期刊名称:BIOLOGY AND FERTILITY OF SOILS ( 影响因子:6.432; 五年影响因子:6.332 )
ISSN:
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收录情况: SCI
摘要: We studied the occurrence of nonadditive effects of litter mixtures on the decomposition (the deviation of decomposition rate of litter mixtures from the expected values based on the arithmetic means of individual litter types) of litters from three plant species (i.e., Stipa krylovii Roshev., Artemisia frigida Willd., and Allium bidentatum Fisch. ex Prokh. & Ikonn.-Gal.) endemic to the grassland ecosystems of Inner Mongolia, northern China and the possible role of initial litter N and P on such effects. We mixed litters of the same plant species that differed in N and P concentrations (four gradients for each species) in litterbags and measured mass losses of these paired mixtures after 30 and 80 days under field conditions. We found the occurrence of positive, nonadditive effects of litter mixtures and showed that the magnitude of the nonadditive effects were related to the relative difference in the initial litter N and P concentrations of the paired litters.
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