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气候变暖对大米生产和新陈代谢过程的影响与温室气体排放相关

Yingying Shen¹, Chen Zhang¹, Yuxuan Peng¹

¹College of Agronomy, Nanjing Agricultural University, 210095 Nanjing, PR China.

The Science of the total environment

|April 3, 2024

概括

全球变暖大大减少了单一作物系统中的大米产量和生物质. 它还增加了甲 (CH4) 排放,突出了减少温室气体 (GHG) 排放和促进作物生产的必要性.

科学领域:

农业科学农业科学
气候科学气候科学
环境科学环境科学

背景情况:

全球变暖对大米生产和温室气体 (GHG) 排放的影响对于粮食安全和气候变化减缓至关重要.
温暖化对作物生产,温室气体排放和单一作物米系统中的微生物机制的影响尚未完全理解.

研究的目的:

为了研究气候变暖对大米作物生产的影响,温室气体排放,以及在单一作物大米系统中相关的微生物功能基因.
评估大米生长季节平均气温上升2.7-3.0°C的影响.

主要方法:

进行了一项为期两年的实地实验,以模拟变暖条件.
测量包括作物产量成分,季节性甲 (CH4) 和氧化 (N2O) 排放,以及涉及温室气体代谢的微生物基因的相对丰度.

主要成果:

气候变暖显著减少了地面生物质,谷物产量,谷物重量,每子的尖子和种子设置率.
相反,变暖增加了恐慌的数量,显著增加了季节性CH4排放,同时减少了N2O排放.
与CH4代谢 (生产和氧化) 和代谢相关的基因的丰富性增加,而N2O脱的基因不受影响.

结论:

气候变暖对单一作物系统中的大米产量和生物质产生负面影响.
在变暖条件下,观察到CH4排放量增加和全球变暖潜力增加.
需要采取战略来减少温室气体排放,提高作物产量,以满足日益增长的粮食需求,减轻气候变化.

关键词:

CH(4) 的新陈代谢.温室气体排放量排放量温室气体排放量的新陈代谢的新陈代谢田是一片田.大米的生产大米的生产气候变暖导致的变暖

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