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净生态系统交换和源分布的特征Xilinhot草原,中国

Yang Chen¹, Hui-Rong Li², Dong-Nan Li³

¹Xilin Golmeng Meteorological Bureau, Xilinhot 026000, Inner Mongolia, China.

Ying yong sheng tai xue bao = The journal of applied ecology

|September 11, 2023

概括

西林霍特的草原表现出强大的碳捕获能力,白天起到碳汇的作用,夜晚起到碳源的作用. 诸如蒸汽压力不足和辐射等环境因素影响了这种二氧化碳流.

科学领域:

生态生态学生态生态学
环境科学环境科学
大气科学大气科学

背景情况:

草原在全球碳循环中发挥着至关重要的作用.
了解草原碳捕获对于减缓气候变化至关重要.

研究的目的:

分析二氧化碳 (CO2) 流量及其环境驱动因素在Xilinhot草原.
确定这些草原在2018-2021年期间的碳捕集能力.

主要方法:

利用了来自西林霍特国家气候观测站 (2018-2021) 的旋协变数据.
分析了二氧化碳流量,源区域分布和环境因素的影响.
计算净生态系统交换 (NEE) 来量化碳平衡.

主要成果:

西林霍特草原表现出显著的日间和季节性二氧化碳流动力学.
在生长季节,草原在白天充当碳汇,在晚上充当碳源.
每年的NEE总量平均为-45.49gC·m−2·a−1,表明强烈的碳捕获.
蒸汽压力不足和光合作用活性辐射增强了二氧化碳的吸收.
夜间温度高于0°C,通过植被呼吸促进了二氧化碳的释放.

结论:

西林霍特的草原具有相当大的碳捕集能力.
环境因素显著调节草原二氧化碳交换.
这些发现有助于理解草原生态系统服务在碳管理中的作用.

关键词:

环境影响因子环境影响因子足迹足迹是指足迹的存在.草原生态系统草原生态系统净生态系统交换交易所

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