[1]LU Xiaofeng,XIONG Zhi,ZHANG Yishu,et al.Spatial and Temporal Variability of Organic Matter Quality of Sediment in Reed (Phragmites australis) Wetland of the Liaohe Estuary[J].Research of Soil and Water Conservation,2017,24(05):69-78.
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Spatial and Temporal Variability of Organic Matter Quality of Sediment in Reed (Phragmites australis) Wetland of the Liaohe Estuary
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 05
Page number:
69-78
Column:
Public date:
2017-10-28
- Title:
- Spatial and Temporal Variability of Organic Matter Quality of Sediment in Reed (Phragmites australis) Wetland of the Liaohe Estuary
- Keywords:
- wetland; sediment; organic carbon matter; spatial variation; temporal variation
- CLC:
- S153.6+2
- DOI:
- -
- Abstract:
- Taking reeds in Liaohe estuary as samples of study, we aim to study the variation of total organic carbon (SOM) content of the wetland sediment and make a research of the change rules of SOM in time and space, respectively. It turned out that in the aspect of time, the SOM content was significantly influenced by time in reed wetland sediments of near and far riverfront, especially in September and October, it had higher SOM content of sediment and the highest in September. In the aspect of space, the surface sediment SOM content (0—10 cm) was significant different from other sediments in depths (10—20 cm, 20—30 cm, 30—40 cm, 40—50 cm), and the difference between the SOM content of sediment in depth of 10—20 cm and that in the depth of 40—50 cm was significant, the SOM contents in other depth sediments had no obvious difference. At far riverfront and in April, May, June, September and October, the SOM contents of sediments in 0—10 cm and 10—20 cm depths were higher, and the maximum value of SOM content occurred in 0—10 cm depth. In July and August, the content of SOM was the least in the sediment in the depth of 0—10 cm. Compared with the far riverfront, the SOM content of near riverfront sediment was significant different because of the influence of the surface runoff in the months of April, May, June, July and August, the maximum value of the SOM content was not significant and the difference of SOM contents was small in different depths of sediments, but the SOM content was slightly higher than others in the depth of 20—40 cm sediment; in September and October, the maximum value of the SOM content occurred in the depth of 0—10 cm sediment and others were approximately equal. There was a linear correlation between the SOM content and the depth in the longitude. The area of S1—3 and S2—3 had the highest SOM content when it was located in the border between buffer and test area from the horizontal point of view, and the area of S1—6, S2—6 and S2—7 had the highest SOM content when it stayed near the border between the buffer and the core area. SOM contents in those areas were higher than the others. By studying the variations of the contents of SOM in time and space, it is clear to understand the change rules of SOM contents, what’s more, it can provide data for rational usage, development of reed wetlands, control of wetland pollution and exploration of the carbon stock.
- References:
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1900-01-01