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首页> 外文期刊>Estuarine Coastal and Shelf Science >Comparison of phosphorus fractions and phosphatase activities in coastal wetland soils along vegetation zones of Yancheng National Nature Reserve, China
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Comparison of phosphorus fractions and phosphatase activities in coastal wetland soils along vegetation zones of Yancheng National Nature Reserve, China

机译：盐城国家自然保护区植被带沿海湿地土壤磷组分和磷酸酶活性的比较。

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摘要

Phosphorus (P) fractions and phosphatase activities were measured in 22 coastal wetland soils with typical vegetation successions in Yancheng National Nature Reserve, China. P forms and phosphatase activities varied greatly from site to site even under the same vegetation cover. NH4Cl-P, bicarbonate/dithionite extracted P and NaOH-P were remarkably higher (p < 0.05) in soils With exotic invasive plants, Spartina alterniflora, than in soils with the native species Suaeda salsa, Scirpus mango etc and Phragmites australis. HCl-P and refractory P showed little variation. No significant differences were detected for either alkaline phosphatase (ALAP) or acid phosphatase (ACAP) among the soils. All of the above properties were much higher in soils with plant growth compared to bare flat soils. Regression analysis demonstrated that organic matter (OM), Al, Ca, Fe and total P (TP) were able to explain more than 70% of the variations in the P fractions (except 29% of NH4Cl-P), and OM was the most important contributing factor. ALAP and ACAP were irrelevant to P but were significantly related to TOC, suggesting that carbon was a limiting factor for P mineralization in this area. Owing to its huge biomass and densities, Spartina alterniflora displayed great potential for carbon input, thus facilitating P mineralization and cycling. The results enhance our understanding of P availability differences in this area covered by invasive and native vegetation. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在盐城国家级自然保护区的22个典型植被演替的沿海湿地土壤中测量了磷（P）含量和磷酸酶活性。即使在相同的植被覆盖下，磷的形态和磷酸酶活性也因地而异。 NH4Cl-P，碳酸氢盐/连二亚硫酸盐萃取的P和NaOH-P在外来入侵植物互花米草（Spartina alterniflora）的土壤中显着高于（p <0.05）与原生物种Suaeda salsa，Scirpus芒果等和Phragmites australis的土壤。 HCl-P和难熔P几乎没有变化。在土壤中，碱性磷酸酶（ALAP）或酸性磷酸酶（ACAP）均未发现显着差异。与裸露的平坦土壤相比，具有植物生长的土壤的所有上述特性都高得多。回归分析表明，有机物（OM），Al，Ca，Fe和总P（TP）能够解释P组分中70％以上的变化（除29％NH4Cl-P外），而OM是最重要的贡献因素。 ALAP和ACAP与P无关，但与TOC显着相关，表明碳是该地区P矿化的限制因素。由于其巨大的生物量和密度，互花米草显示出巨大的碳输入潜力，从而促进了磷的矿化和循环。结果增强了我们对入侵和本地植被覆盖的该地区磷有效性差异的理解。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2015年第5期|93-98|共6页
  • 作者

    Huang Lidong; Zhang Yaohong; Shi Yiming; Liu Yibo; Wang Lin; Yan Ning;

  • 作者单位

    Nanjing Univ Informat Sci & Technol, Coll Appl Meteorol, Jiangsu Prov Key Lab Agr Meteorol, Nanjing 210044, Jiangsu, Peoples R China;

    Nanjing Univ Informat Sci & Technol, Coll Appl Meteorol, Jiangsu Prov Key Lab Agr Meteorol, Nanjing 210044, Jiangsu, Peoples R China;

    Environm Protect Bur Xinyang City, Xinyang 464000, Henan, Peoples R China;

    Nanjing Univ Informat Sci & Technol, Coll Appl Meteorol, Jiangsu Prov Key Lab Agr Meteorol, Nanjing 210044, Jiangsu, Peoples R China;

    Nanjing Univ Informat Sci & Technol, Coll Appl Meteorol, Jiangsu Prov Key Lab Agr Meteorol, Nanjing 210044, Jiangsu, Peoples R China;

    Chinese Acad Agr Sci, Tobacco Res Inst, Qingdao 266101, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    coastal wetland; phosphorus fractionation; phosphatase activities; organic carbon;

    机译：沿海湿地磷分级磷酸酶活性有机碳;

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