黄河口滨岸潮滩不同类型湿地土壤磷、硫的分布特征
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国家海洋局近岸海域生态环境实验室基金(200906);中国科学院知识创新工程重要方向项目(KZCX2-YW-223);中国科学院院长奖获得者科研启动基金(AJ0809BX-036);中国科学院烟台海岸所前沿领域项目(HJ0810BX-047);国家自然科学基金项目(40803023);厦门大学近海海洋环境科学国家重点实验室高级访问学者基金(MELRS0918);厦门大学滨海湿地生态系统教育部重点实验室基金(Cwe10903)


Distribution Characteristics of Phosphor and Sulfur in Different Wetland Soils of the Yellow River Delta
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    摘要:

    以黄河口滨岸潮滩湿地为研究对象,研究了不同植被群落覆盖下湿地土壤中磷、硫的变化特征及其储量状况。结果表明,植被群落的变化能够影响土壤中磷、硫的含量,但影响程度不同。沿植物群落演替方向,土壤全磷含量差异不显著,变异系数较小,而全硫含量受影响显著,呈"S"型波动变化;在垂直分布特征方面,全磷的差异程度不大,表明土壤中磷含量主要取决于成土母质,相对而言,硫的垂直分布特征存在较大差异,大部分采样点的变异系数在10%以上,属中等变异,其分布特征主要受制于土壤有机质的分布;两种元素的储量及其分布状况受植被群落的影响程度不同,不同植被群落土壤的磷储量及其分布状况差异不大,均在0.32kg/m2(0—60cm)附近波动;而不同土壤中硫储量存在较大差异,沿演替方向呈"S"型波动变化,最高值0.33kg/m2(光滩,0—60cm),最低值0.17kg/m2(演替末期,0—60cm),但其分布状况差异不大。研究结果表明,植被对调整湿地磷、硫的空间分布具有显著影响,故可根据生源元素的循环选择适宜的植物对湿地进行生态修复,为湿地生态的修复提供理论依据。

    Abstract:

    In August,2008,the wetlands in the Yellow River Delta,covered with different plant communities,were selected as the study objects to investigate the spatial distribution characteristics and the reserves of phosphor(P) and sulfur(S) in wetland soils. Results showed that different plant communities could affect the contents of P and S differently. Total phosphorus(TP) content had no significant variation with the succession,while total sulfur(TS) content,varying in the "S" mode,was affected obviously by the period of plant community succession. As for the characteristics of vertical distribution,TP content was not remarkable,showing that TP in soils depends on parent material. However,the vertical distribution of TS was significant(CV10%) and its distribution was based on soil organic matter. Besides,the reserves and distributions of the two elements were also affected by plant communities differently. Both the reserve and the distribution of phosphorus varied little,fluctuating around 0.32 kg/m2 (0—60 cm). The reserve of S varied significantly from 0.17 kg/m2(the last stage of succession,0—60 cm)to 0.33 kg/m2 (bare beach,0—60 cm),fluctuating in "S" mode with the succession,while the distribution of S was not clear. Result from the research shows that the distributions of P and S in wetland soils are affected by plants and thus,right plants can be selected to apply in ecological rehabilitation of wetland. The research may provide a theoretical basis for the ecological rehabilitation of wetlands.

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孙万龙,孙志高,牟晓杰,王玲玲.黄河口滨岸潮滩不同类型湿地土壤磷、硫的分布特征[J].水土保持通报,2010,(4):104-109

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  • 在线发布日期: 2014-11-26
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