Plant type mediates rhizospheric microbial activities and soil aggregation in a semiarid Mediterranean salt marsh
Plant type mediates rhizospheric microbial activities and soil aggregation in a semiarid Mediterranean salt marsh
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DOI：
10.1016/j.geoderma.2004.05.010
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发表时间：
2005-02-01
期刊：
影响因子：
6.1
通讯作者：
Roldán, A
中科院分区：
文献类型：
--
作者：
Caravaca, F;Aiguacil, MM;Roldán, A
本研究在西班牙东南部半干旱的地中海盐沼中进行，以确定8种盐生植物（Asteriscus maritimus（L.）更少。，大穗节蕨Arthrocnenium macrostachyum（Moric.）Moris，Frankenia corymbosa Desf.，Halimione portulacoides（L.）Aellen，西南补血草（Limonium cossonianum O.）昆兹补血草（Limonium cesium（吉拉德）O. Kuntze，Lygeum spartum L.，和碱蓬（Suaeda vera Forsskal ex J.F.）在盐含量、根际土壤微生物和生物化学性质（不稳定的C组分）方面，在均匀的区域生长的Gmelin。生物量C.氧化还原酶和水解酶）和聚集体稳定化。H.水溶性C.水溶性碳水化合物、微生物生物量C和脱氢酶、脲酶、蛋白酶-BAA和酸性磷酸酶活性。S. vera的微生物活性最低。A. maritimus，L. cossonianum：L. spartum和H.马齿苋的稳定性团聚体比例最高，平均约为52%; vera最低（约占稳定团聚体的27%）。酶活性与碳生物量之间有很好的相关性。8种盐生植物的根定殖和稳定团聚体的水平。我们的结果表明，土壤微生物活性以及与微生物活性相关的土壤性质（例如团聚体稳定性）取决于盐生植物物种的类型。(C)2004 Elsevier B. V.保留所有权利。
This study was carried out in a Mediterranean salt marsh from semiarid Southeastern Spain, to determine the influence of eight halophytes (Asteriscus maritimus (L.) Less., Arthrocnenium macrostachyum (Moric.) Moris, Frankenia corymbosa Desf., Halimione portulacoides (L.) Aellen, Limonium cossonianum O. Kuntze. Limonium caesium (Girard) O. Kuntze, Lygeum spartum L., and Suaeda vera Forsskal ex J.F. Gmelin growing in a homogeneous area with regard to salt content, on the rhizosphere soil microbiological and biochemical properties (labile C fractions. biomass C. oxidoreductases and hydrolases) and aggregate stabilisation. Rhizosphere soil of H. portulacoides showed the highest values of water-soluble C. water-soluble carbohydrates, microbial biomass C and dehydrogenase, urease, protease-BAA and acid phosphatase activities. S. vera had the lowest microbial activity. The soil under A. maritimus, L. cossonianum: L. spartum and H. portulacoides had the highest percentages of stable aggregates (on average, about 52%) and the soil under S. vera the lowest (about 27% of stable aggregatess). There was a good correlation between enzyme activities, the C-biomass. root colonisation of the eight halophytes and the levels of stable aggregates. Our results suggest that soil microbial activity and soil properties related to microbial activity, such as aggregate stability, are deter-mined by the type of the halophytic Species. (C) 2004 Elsevier B.V. All rights reserved.