地质封存CO2泄漏对农田生态系统的影响评估及耐受阈值

被引:25
作者
伍洋 [1 ,2 ]
马欣 [1 ,2 ]
李玉娥 [1 ,2 ]
万运帆 [1 ,2 ]
张九天 [3 ]
仲平 [3 ]
贾莉 [3 ]
机构
[1] 中国农业科学院农业环境与可持续发展研究所
[2] 农业部农业环境与气候变化重点实验室
[3] 中国世纪议程管理中心
关键词
CO2; pH值; 地质; 碳捕获与封存; 农田生态系统; 影响评估; 耐受阈值;
D O I
暂无
中图分类号
S181 [农业生态学];
学科分类号
071012 ; 0713 ;
摘要
碳捕获与封存(carbon capture and storage,CCS)是全球碳减排的重要战略性技术,但封存CO2泄漏对地表生态系统的严重威胁是CCS活动的重要障碍之一。该研究选择受封存CO2泄漏威胁的农田生态系统作为研究对象,通过运用人工控制手段模拟地质封存CO2泄漏到达地表的系列情景,监测农田生态系统主要指标变化,评估和确定封存CO2泄漏对农田生态系统的影响和耐受阈值。研究结果表明,不同泄漏情景下玉米均受到不同程度的不利影响,并且泄漏通量越大,影响程度越深:CO2泄漏情景下的玉米出苗受到严重阻碍,株高和叶片数随泄漏通量增大而呈逐渐减小的趋势,地上部和地下部生物量较对照情景明显减少,光合作用受到干扰,土壤pH值降低。500~2000g/(m2·d)范围内的泄漏情景为玉米对地质封存CO2泄漏的耐受阈值。
引用
收藏
页码:196 / 205
页数:10
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