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首页> 外文期刊>Journal of soils & sediments >Comparison of phosphorus sorption characteristics in the soils of riparian buffer strips with different land use patterns and distances from the shoreline around Lake Chaohu
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Comparison of phosphorus sorption characteristics in the soils of riparian buffer strips with different land use patterns and distances from the shoreline around Lake Chaohu

机译：不同土地使用模式与巢湖海岸线与海岸线的岩土缓冲区土壤中磷吸附特征的比较

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摘要

Purpose The construction of riparian buffer strips has become increasingly important due to the effective phosphorus (P) retention of the strips, thus preventing eutrophication in freshwater ecosystems. The key mechanism is P sorption in soils. To provide some suggestions for increasing the sorption ability of P, the relationships between P sorption behavior and both land use patterns and distance from the shoreline were determined.Materials and methods In April, July, and October 2013, field investigations were carried out along the shoreline of Lake Chaohu. Eleven sections, including 36 sampling sites at different distances from the shoreline, were chosen, and these sections contained different types of riparian buffer strips, such as grassland, farmland, forest, wetland, and forest/grassland. The P species, sorption parameters, and dominant vegetation species were analyzed.Results and discussion The total P (TP) and P sorption maximum (Q(max)) showed no recognizable seasonal variation and were closely correlated with the distance from the shoreline. The further the distance from the shoreline, the higher the TP and Q(max) values, suggesting that soil traits could determine the P sorption extent. However, the Olsen-P content and equilibrium P concentration (EPC0) fluctuated greatly, with the peak occurring in spring and the minimum occurring in summer in the majority of the sampling sites. In addition, positive relationships existed between the TP content and the Q(max) value as well as the Olsen-P content and the EPC0 value. Canonical correlation analysis (CCA) further showed that the Olsen-P content and EPC0 values were closely related to the dominant vegetation species, indicating that land use patterns played a decisive role in regulating the P sorption strength and the level of available P.Conclusions To effectively adsorb P (increase Q(max)) and prevent P leaching (reduce the EPC0), we recommend changing the land use patterns (more constructed wetlands and forests with grass) in riparian buffers.
机译：目的由于有效的磷（P）保留的条带的磷（P）保留，爬行物缓冲条的构建变得越来越重要，从而防止淡水生态系统中的富营养化。关键机制是土壤中的吸收。为了提供增加P的吸附能力的建议，确定了P吸附行为与土地利用模式与海岸线的距离之间的关系。4月，7月和2013年10月，实地调查沿着湖湖湖海岸线。选择11个部分，包括来自海岸线的不同距离的36个采样点，这些部分包含不同类型的河岸缓冲条，例如草原，农田，森林，湿地和森林/草原。分析了P种，吸附参数和显性植被物种。结果和讨论总P（TP）和P吸附最大值（Q（最多））显示没有可识别的季节变异，与海岸线的距离密切相关。距离海岸线的距离，TP和Q（MAX）值越高，表明土壤性状可以确定P吸附程度。然而，OLSEN-P含量和平衡P浓度（EPC0）大大波动，峰值发生在弹簧中，在夏季发生在大部分采样位点。另外，在TP内容和Q（MAX）值以及OLSEN-P含量和EPC0值之间存在正相关关系。规范相关性分析（CCA）进一步表明，OLSEN-P含量和EPC0值与主要植被物种密切相关，表明土地利用模式在调节P吸收强度和可用P.Conclusions的水平方面发挥了决定性作用有效吸附P（增加Q（MAX））并防止P浸出（减少EPC0），我们建议在河岸缓冲区中改变土地利用模式（更多建造的湿地和森林）。

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  • 来源
    《Journal of soils & sediments》 |2019年第5期|2322-2329|共8页
  • 作者

    Cao Xiuyun; Chen Xiaoyan; Song Chunlei; Zhou Yiyong;

  • 作者单位

    Chinese Acad Sci Inst Hydrobiol Key Lab Algal Biol State Key Lab Freshwater Ecol & Biotechnol Wuhan 430072 Hubei Peoples R China;

    Chinese Acad Sci Inst Hydrobiol Key Lab Algal Biol State Key Lab Freshwater Ecol & Biotechnol Wuhan 430072 Hubei Peoples R China|Univ Chinese Acad Sci Beijing 100039 Peoples R China;

    Chinese Acad Sci Inst Hydrobiol Key Lab Algal Biol State Key Lab Freshwater Ecol & Biotechnol Wuhan 430072 Hubei Peoples R China;

    Chinese Acad Sci Inst Hydrobiol Key Lab Algal Biol State Key Lab Freshwater Ecol & Biotechnol Wuhan 430072 Hubei Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Lake Chaohu; Phosphorus sorption; Phosphorus species; Riparian buffer strips;

    机译：湖湖湖;磷吸附;磷种类;河岸缓冲条;

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