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将每月的春季潮波纳入元生态系统的河口碳预算
Yu Gao1, Jiquan Chen2, Neil Saintilan3
1East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences; Key Laboratory of Fisheries Remote Sensing, Ministry of Agriculture and Rural Affairs; Scientific Observing and Experimental Station of Fisheries Resources and Environment of East China Sea and Yangtze Estuary, Shanghai 200090, China; Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Coastal Ecosystems Research Station of the Yangtze River Estuary, and Institute of Eco-Chongming (IEC), Fudan University, Shanghai 200438, China; Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China; School of Natural Sciences, Macquarie University, Sydney, NSW 2109, Australia.
河口沼泽出口溶解的有机和无机碳,但保留颗粒碳. 这项研究揭示了侧向碳流如何影响湿地碳预算,特别是在超生态系统内.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 生物地质化学生物地质化学
背景情况:
- 侧面碳 (C) 流对于陆地-水界面的河口碳预算至关重要.
- 量化季节性C流是具有挑战性的,因为景观异质和采样困难.
研究的目的:
- 在河口沼泽中调查每年陆地-水域横向水文碳流.
- 分析溶解有机碳 (DOC),溶解无机碳 (DIC) 和颗粒有机碳 (POC) 对横向流量的差异反应.
主要方法:
- 每月一次的潮采样,包括每天的春季潮,超过一年 (44次采样).
- 对进口和出口的DOC,DIC和POC度进行分析.
- 计算横向的水文碳预算.
主要成果:
- 在进口和出口的DOC和DIC之间发现了显著的相关性.
- 盐沼显示DOC和DIC的净出口,但POC的净下降.
- 侧面水文预算作为有机碳的有限吸收器,但对整体碳的来源很小.
结论:
- 侧面的水文流入/流出显著影响湿地碳预算,特别是在超生态系统中.
- 不同的碳物种对横向水文预算的反应不平等.
- 超生态系统概念对于理解碳外流假设是有价值的.
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