Response of CO<sub>2</sub> Production Potential of Wetland with Different Vegetation Types in East Taihu Lake to Temperature Change

Yang Lingling; Zhou Qi

doi:10.13961/j.cnki.stbctb.2024.05.028

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Response of CO₂ Production Potential of Wetland with Different Vegetation Types in East Taihu Lake to Temperature Change

- Response of CO₂ Production Potential of Wetland with Different Vegetation Types in East Taihu Lake to Temperature Change
- Bulletin of Soiland Water Conservation Vol. 43, Issue 5, Pages: 262-270(2024)
- 作者机构：
  
  1. 江苏开放大学环境生态学院,江苏,南京,210036
  2. 江苏省生态环境保护城乡水环境治理低碳发展工程技术中心,江苏,南京,210036
  3. 南京林业大学风景园林学院,江苏,南京,210037
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2024.05.028
  CLC： S154.4
- Published：2024
- 稿件说明：
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Yang Lingling, Zhou Qi. Response of CO₂ Production Potential of Wetland with Different Vegetation Types in East Taihu Lake to Temperature Change[J]. Bulletin of Soiland Water Conservation, 2024, 43(5): 262-270.
DOI：

Yang Lingling, Zhou Qi. Response of CO₂ Production Potential of Wetland with Different Vegetation Types in East Taihu Lake to Temperature Change[J]. Bulletin of Soiland Water Conservation, 2024, 43(5): 262-270. DOI： 10.13961/j.cnki.stbctb.2024.05.028.

摘要

[目的

]

探索不同植被类型湿地土壤CO

产生潜力对温度变化的响应规律，为精确估算CO

产生和温室气体排放提供依据。[方法

]

针对3种不同植被类型湿地土壤(荷花、芦苇、开放水面)，进行120 d的室内模拟培养试验，分别设置15，25，35 ℃处理，观察不同植被类型湿地土壤产CO

潜力的差异及其对温度变化的响应。[结果

]

东太湖不同植被类型湿地土壤CO

产生速率在35 ℃培养下最快。35 ℃培养条件下芦苇、开放水面CO

产生速率随DOC增加而增加，其余均呈负相关关系。荷花、芦苇土壤最大产CO

潜力表现为35 ℃＞15 ℃＞25 ℃，开放水面表现为：15 ℃＞25 ℃＞35 ℃。荷花、芦苇湿地产CO

潜力与培养温度呈正相关，开放水面呈显著负相关关系。比较温度敏感系数Q

值发现，只有荷花土壤的升温Q

值大于降温Q

值。[结论

]

高温能加快不同植被类型湿地土壤CO

产生速率、加剧DOC变化。比较同温度、不同植被土壤产CO

潜力发现，芦苇、开放水面对降温更敏感。湿地植物及其土壤对温室气体的产生受外界温度影响较大，在未来城市水生态管理中应予以更多的关注。

Abstract

[Objective] Soil CO2 production potential of different vegetation types in response to temperature change was analyzed in order to provide the basis for accurate estimation of CO2 production and greenhouse gas emissions. [Methods] A simulated culture experiment was conducted for 120 days for three different types of wetland soil (Nelumbo nucifera

Phragmites australis and open water)

and the treatment was set at 15

and 35 ℃ to observe the difference in the CO2 production potential of the wetland soil of different vegetation types and evaluate their response to temperature change. [Results] The fastest soil CO2 production rate among the different vegetation types in East Taihu Lake was recorded in the 35 ℃ culture treatment. Under the culture temperature of 35 ℃

the CO2 production rate of P. australis and open water surface increased with an increase in dissolved organic carbon (DOC) but that of the rest were negatively correlated. The maximum CO2 production potential of N. nucifera and P. australis soil was in the order as follows: 35 ℃ ＞ 15 ℃ ＞ 25 ℃ and that of open water surface was 15 ℃ ＞ 25 ℃ ＞ 35 ℃. The CO2 production potential of N. nucifera and P. australis wetlands was positively correlated with culture temperature

whereas that of the open water surface was significantly negatively correlated. Comparising all of the temperature sensitivity coefficient Q10 values

it was found that only N. nucifera soil temperature rise Q10＞ temperature drop Q10. [Conclusion] High temperature can accelerate CO2 production rate and increase DOC change in different vegetation types. Regarding the CO2 production potential of soil with the same temperature and different vegetation

it was found that P. australis and open water surface were more sensitive to cooling. The greenhouse gas production of wetland plants and the soil was greatly affected by external temperature; therefore

more attention should be paid to future urban water ecological management.

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Response of CO2 Production Potential of Wetland with Different Vegetation Types in East Taihu Lake to Temperature Change

DOI：10.13961/j.cnki.stbctb.2024.05.028

摘要

Abstract

关键词

Keywords

references

Response of CO₂ Production Potential of Wetland with Different Vegetation Types in East Taihu Lake to Temperature Change