神农架大九湖亚高山泥炭湿地水汽通量特征及其与相关环境因子的关系

翁闻畅; 葛继稳; 谌佳伟; 李永福; 程腊梅; 张志麒

doi:10.11913/PSJ.2095-0837.2020.40493

神农架大九湖亚高山泥炭湿地水汽通量特征及其与相关环境因子的关系

翁闻畅^1,2,3,
葛继稳^1,2,3, ,,
谌佳伟^1,2,3,
李永福⁴,
程腊梅⁵,
张志麒⁶

1. 中国地质大学(武汉)盆地水文过程与湿地生态恢复学术创新基地, 武汉 430074;
2. 中国地质大学(武汉)湿地演化与生态恢复湖北省重点实验室, 武汉 430074;
3. 中国地质大学(武汉)生态环境研究所, 武汉 430074;
4. 新疆农业科学院, 乌鲁木齐 830091;
5. 武汉伟特伦生态环境研究所, 武汉 430079;
6. 神农架国家公园管理局, 湖北神农架林区 442417

基金项目:

国家自然科学基金资助项目（31971490）。

详细信息

作者简介:
翁闻畅(1994-),男,硕士研究生,研究方向为湿地生态学研究(E-mail:543541289@qq.com)。

通讯作者:
葛继稳,E-mail:gejiwen2002@aliyun.com

中图分类号: Q948
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出版历程
- 收稿日期: 2019-11-13
- 修回日期: 2020-02-10
- 网络出版日期: 2022-10-31
- 发布日期: 2020-08-27

Water vapor flux characteristics and their relationship with environmental factors in the subalpine peat wetlands of Dajiuhu, Shennongjia

1. Laboratory of Basin Hydrology and Wetland Eco-restoration, China University of Geosciences, Wuhan 430074, China;
2. Hubei Key Laboratory of Wetland Evolution and Ecological Restoration, China University of Geoscience, Wuhan 430074, China;
3. Institute of Ecology and Environmental Sciences, China University of Geosciences, Wuhan 430074, China;
4. Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China;
5. Wuhan Wetland Institute of Ecology and Environmental Sciences, Wuhan 430079, China;
6. Shennongjia National Park Administration Bureau, Shennongjia Forestry District, Hubei 442417, China

Funds:

This work was supported by a grant from the National Natural Science Foundation of China(31971490).

摘要

摘要: 以神农架大九湖亚高山泥炭湿地为对象，采用涡度相关技术，通过采集湿地水汽通量的年际数据，并进行数据统计和分析，研究水汽通量特征及其与环境因子的关系。结果显示：（1）大九湖泥炭湿地全年蒸散量占降水量的58.59%，能够满足大九湖生态系统水汽循环的需要。（2）大九湖泥炭湿地的水汽通量全年各月份日均变化大多为正值，即释放水汽，表明该地区总体表现为水汽源；在季节尺度上，水汽通量最大值出现在夏季，夏季水汽通量日均变化幅度最大。（3）净辐射月均变化幅度较大，其中夏季净辐射最大，占全年的34.96%。各季节的净辐射与水汽通量均呈正相关，春季、夏季和秋季的拟合效果（R²）均超过0.7，夏季最高（0.8347），且高于其他同纬度6个地区。（4）除2018年1月外，各月份水汽通量与气温均呈显著正相关，特别是夏季最显著相关，这与夏季植物蒸腾和水分蒸发旺盛有关。（5）气温和净辐射对水汽通量的影响在各季节均显著，但各季节间有所差异。研究表明净辐射在大九湖泥炭湿地水汽循环中的作用大于气温对水汽通量的影响。
- 亚高山泥炭湿地 /
- 水汽通量 /
- 相关环境因子 /
- 净辐射
Abstract: Using the eddy covariance technique, we collected interannual data on wetland water vapor flux and conducted data analysis to study the characteristics of water vapor flux and its relationship with environmental factors in the subalpine peat wetlands of Dajiuhu, Shennongjia. Results showed that:(1) Evapotranspiration accounted for 58.59% of precipitation, indicating that precipitation could meet the needs of water vapor circulation in Dajiuhu. (2) Annual diurnal variation of water vapor flux was mostly positive (release of water vapor), indicating that the peat ecosystem of Dajiuhu was the main source of water vapor. Seasonally, maximum diurnal variation appeared in summer, with the largest change range. (3) Average net radiation varied largely over the year and the maximum appeared in summer, accounting for 34.96% of total radiation over the whole year. There was a high correlation between water vapor flux and net radiation in every season. Correlation coefficients (R²) in spring and summer were greater than 0.7, with the maximum of 0.8347 appearing in summer, better than any other survey region at similar latitude. (4) There was a significant positive correlation between water vapor flux and air temperature each month, except January 2018, with the highest correlation in summer. This was mostly because both plant transpiration and surface evaporation were highly active in summer. (5) Air temperature and net radiation had significant effects on water vapor flux in every season, but correlation varied from season to season. These results showed that net radiation played a more important role in the water vapor cycle than air temperature in the subalpine peat wetlands of Dajiuhu, Shennongjia.
- Subalpine peat wetlands /
- Water vapor flux /
- Related environmental factors /
- Net radiation

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