Effects of Ecological Restoration Projects on Dynamic Variations of Inorganic Sulfur Fractions in Marsh Solis of the Yellow River Estuary

WU Huihui; SUN Zhigao; SUN Wenguang; LI Xinhua

doi:10.13870/j.cnki.stbcxb.2020.06.022

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Effects of Ecological Restoration Projects on Dynamic Variations of Inorganic Sulfur Fractions in Marsh Solis of the Yellow River Estuary

更新时间：2025-03-12

- Effects of Ecological Restoration Projects on Dynamic Variations of Inorganic Sulfur Fractions in Marsh Solis of the Yellow River Estuary
- Vol. 34, Issue 6, Pages: 150-158(2020)
- 作者机构：
  
  1. 福建师范大学湿润亚热带生态地理过程教育部重点实验室,福州,350007
  2. 福建师范大学地理研究所,福州,350007
  3. 福建师范大学福建省亚热带资源与环境重点实验室,福州,350007
  4. 路易斯安那州立大学植物、环境与土壤科学系,巴吞鲁日,700803
  5. 山东省农业科学院可持续发展研究所,济南,250000
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2020.06.022
  CLC： S153.6
- Published：2020
- 稿件说明：
移动端阅览
WU Huihui, SUN Zhigao, SUN Wenguang, et al. Effects of Ecological Restoration Projects on Dynamic Variations of Inorganic Sulfur Fractions in Marsh Solis of the Yellow River Estuary[J]. 2020, 34(6): 150-158.
DOI：

WU Huihui, SUN Zhigao, SUN Wenguang, et al. Effects of Ecological Restoration Projects on Dynamic Variations of Inorganic Sulfur Fractions in Marsh Solis of the Yellow River Estuary[J]. 2020, 34(6): 150-158. DOI： 10.13870/j.cnki.stbcxb.2020.06.022.

摘要

选择黄河口生态恢复前后的未恢复区（R0）、2007年恢复区（R2007）和2002年恢复区（R2002）的芦苇湿地为研究对象，探讨了生态恢复工程对生长季湿地土壤无机硫形态变化的影响。结果表明，生态恢复工程不同程度地改变了湿地土壤中各形态无机硫含量。相对于R0，R2002和R2007土壤中的水溶性硫（H2O—S）含量分别降低46.7%和44.7%，吸附性硫（Adsorbed—S）和盐酸可溶性硫（HCl—Soluble—S）含量分别增加0.4%，116.0%和50.1%，29.1%，而盐酸挥发性硫（HCl—Volatile—S）含量在R2002下降8.0%，在R2007增加19.7%。不同恢复阶段湿地土壤中各形态无机硫含量在生长季呈不同的变化特征，这一方面与不同湿地植物生长节律以及地上与地下之间的硫养分供给关系密切相关；另一方面则与不同生态补水方式导致的环境因子，尤其是pH、EC和氮养分的变化有关。随着恢复年限的增加，湿地土壤的总无机硫（TIS）含量以及其占全硫（TS）含量的比例均呈降低趋势。湿地土壤的TIS储量整体随恢复年限的增加而降低，而这种降低主要取决于H2O—S、Adsorbed—S和HCl—Soluble—S的贡献，且以H2O—S占优（78%~80%）。研究发现，随着黄河口湿地的逐渐恢复以及每年冬季芦苇收割活动的进行，恢复湿地土壤中的无机硫养分逐渐趋于缺乏状态，长期来看将不利于维持湿地的稳定与健康。

Abstract

To investigate the effects of ecological restoration project on variations of inorganic sulfur fractions in marsh soils during the growing season

the Phragmites australis marshes in un-restoration plot (R0)

restoration plot since 2007 (R2007)

and restoration plot since 2002 (R2002) of the Yellow River estuary were studied. Results showed that the contents of inorganic sulfur fractions in marsh soils were greatly altered by the ecological restoration project. Compared with R0

the levels of Water—soluble—sulfur (H2O—S) in soils of R2002 and R2007 decreased by 46.7% and 44.7%

whereas those of Adsorbed—sulfur (Adsorbed—S) and HCl—Soluble—sulfur (HCl—Soluble—S) increased by 0.4%

116.0% and 50.1%

29.1%

respectively. By comparison

the contents of HCl—Volatile—sulfur (HCl—Volatile—S) in soils of R2002 decreased by 8.0% while those of R2007 increased by 19.7% compared to R0. The contents of inorganic sulfur fractions in marsh soils of different restoration stages showed different variations during the growing season. There were two probable reasons. First

it was closely related to the growth rhythm of different marsh plants and the sulfur supply relationships between aboveground and belowground parts; Second

it was dependent on the variations of environmental factors (especially pH

and nitrogen nutrient) caused by different ecological water supplement patterns. With increasing restoration years

both the total inorganic sulfur (TIS) content and its proportion in total sulfur (TS) content in marsh soils decreased greatly. Also

the TIS stocks in marsh soils generally decreased with increasing restoration years. The decline of TIS stock in marsh soils mainly rested with the contributions of H2O—S

Adsorbed—S and HCl—Soluble—S

and H2O—S was dominant (78%~80%). This study found that

with the gradual restoration of marshes in the Yellow River estuary and the implementation of reed harvest in winter every year

the inorganic sulfur nutrient in restoration marsh soils would gradually tend to be deficient

which might be unfavorable for the maintenance of stability and health of marshes in the long term.

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