西溪湿地典型植被和水体温室气体排放通量及其影响因素

doi:10.13292/j.1000-4890.202606.004

生态学杂志 ›› 2026, Vol. 45 ›› Issue (6): 1956-1965.doi: 10.13292/j.1000-4890.202606.004

西溪湿地典型植被和水体温室气体排放通量及其影响因素

黄逸晨¹,尤育克¹,姚可侃³,王懿祥⁴,白尚斌²,王楠²,周秀梅^2*

（¹浙江农林大学林业与生物技术学院，杭州 311300； ²浙江农林大学暨阳学院，浙江诸暨 311800； ³杭州西溪国家湿地公园生态文化研究中心，浙江西溪湿地生态系统定位观测研究站，杭州 310000； ⁴浙江农林大学环境与资源学院、碳中和学院，杭州 311300）

出版日期:2026-06-10 发布日期:2026-12-01

Greenhouse gas fluxes from typical vegetation and water body in Xixi wetland and their influencing factors.

HUANG Yichen¹, YOU Yuke¹, YAO Kekan³, WANG Yixiang⁴, BAI Shangbin², WANG Nan², ZHOU Xiumei^2*

(¹College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China; ²Jiyang College, Zhejiang A&F University, Zhuji 311800, Zhejiang, China; ³Xixi National Wetland Park Ecological Culture Research Center, Hangzhou 310000, China; ⁴College of Environment and Recourses, College of Carbon Neutrality, Zhejiang A&F University, Hangzhou 311300, China).

Online:2026-06-10 Published:2026-12-01

摘要/Abstract

摘要： 湿地作为陆地生态系统的重要碳库，其温室气体通量变化对理解湿地碳收支规律及评估其减缓气候变化的潜力具有重要意义。本文以西溪湿地为对象，选取乔木地、乔灌草地、灌草地和芦苇草地4种陆地类型，河道、池塘和浅滩3种水体类型，采用静态箱-气相色谱联用技术，于2023年6月至2024年5月进行为期一年的原位监测。结果表明：温室气体排放通量呈现显著时空异质性，陆地类型CO₂月平均排放通量以芦苇草地最高（557.71 mg·m^-2·h^-1），显著高于其他类型（P<0.05）；水体类型排放量整体低于陆地类型；N₂O通量呈源汇双相特征，芦苇草地为强排放源（54.34 μg·m^-2·h^-1），而乔灌草地和部分水体表现为吸收汇；CH₄排放呈现极端差异，水体类型排放显著大于陆地类型（P<0.05），其中浅滩排放通量最高，达7720.23 μg·m^-2·h^-1；陆地系统温室气体通量与土壤温度、含水率等环境因子呈显著正相关（P<0.05）；而水体类型则呈现多因子非线性响应特征。本研究系统解析了湿地温室气体排放的微生境分异规律，揭示了关键环境驱动机制，为精准评估亚热带城市湿地碳汇功能提供了科学依据。

关键词: 湿地, 温室气体排放通量, 陆地类型, 水体类型

Abstract: Wetland, as an important carbon pool, plays an important role in global carbon cycling. Variations in greenhouse gas fluxes from wetlands are of significant importance for understanding wetland carbon budget and assessing their climate change mitigation potential. In this study, taking Xixi wetland as the object, four land types (arbor land, arbor-shrub grassland, shrub grassland, and reed grassland) and three aquatic types (water course, pond, and shoal) were selected for in-situ monitoring of greenhouse gas fluxes via static chamber combined with gas chromatography for one year from June 2023 to May 2024. The results showed that greenhouse gas fluxes exhibited significant spatiotemporal variations. Among the four land types, the monthly average CO₂ fluxes were the highest in reed grasslands (557.71 mg·m^-2·h^-1), which was significantly higher than other types (P<0.05). The overall emission fluxes from aquatic types were lower than those from land types. N₂O flux showed a dual source-sink pattern. Reed grasslands acted as a strong emission source (54.34 μg·m^-2·h^-1), while arbor-shrub grassland and certain water bodies served as sinks. The CH₄ emission showed extreme variability, with aquatic types being significantly higher than that of land types (P<0.05), and the highest flux was observed in shoals, reaching 7720.23 μg·m^-2·h^-1. The greenhouse gas fluxes in land systems were positively correlated with environmental factors such as soil temperature and moisture content (P<0.05), while the aquatic systems exhibited a multi-factor nonlinear response pattern. This study systematically analyzed the microhabitat differentiation patterns of wetland greenhouse gas emissions, and revealed the key environmental driving mechanism, providing a scientific basis for accurately assessing the carbon sink function of subtropical urban wetlands.

Key words: wetland, greenhouse gas emission flux, land type, aquatic type

黄逸晨, 尤育克, 姚可侃, 王懿祥, 白尚斌, 王楠, 周秀梅. 西溪湿地典型植被和水体温室气体排放通量及其影响因素[J]. 生态学杂志, 2026, 45(6): 1956-1965.

HUANG Yichen, YOU Yuke, YAO Kekan, WANG Yixiang, BAI Shangbin, WANG Nan, ZHOU Xiumei. Greenhouse gas fluxes from typical vegetation and water body in Xixi wetland and their influencing factors.[J]. Chinese Journal of Ecology, 2026, 45(6): 1956-1965.

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西溪湿地典型植被和水体温室气体排放通量及其影响因素

Greenhouse gas fluxes from typical vegetation and water body in Xixi wetland and their influencing factors.

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