Soil nutrients and salinity after long-term grazing exclusion in a Flooding Pampa grassland
Soil nutrients and salinity after long-term grazing exclusion in a Flooding Pampa grassland
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DOI：
10.2307/4002692
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发表时间：
1996-03-01
期刊：
影响因子：
--
通讯作者：
Lavado, RS
中科院分区：
文献类型：
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作者：
Chaneton, EJ;Lavado, RS
在阿根廷洪水大草原的两个不同土壤涝渍发生频率的天然草地样地，经过12-16年的放牧保护，测定了土壤有机C、全N、可浸提P和盐分。我们检验了放牧对土壤化学性质影响的假设。在每个样地相邻的放牧和未放牧样地，我们取样到10 cm深，并评估了牧草植被组成的百分比差异（PD）。放牧条件与立地条件交互作用显著（P
Soil organic C, total N, extractable P, and salinity were evaluated after 12-16 years of protection from grazing in 2 native grassland sites which differed in frequency of soil waterlogging in the Flooding Pampa of Argentina, We tested the hypothesis that flooding regime would affect the impact of grazing on soil chemical properties, We sampled soil to 10-cm depth in adjacent grazed and ungrazed plots in each site, and assessed the percentage dissimilarity (PD) in vegetation composition among pastures. Grazing condition significantly interacted with site (P