农业工程学报2012，Vol.28Issue(2)：196-205,10.DOI:10.3969/j.issn.1002-6819.2012.02.035
地质封存CO2泄漏对农田生态系统的影响评估及耐受阈值
Impact assessment and tolerable threshold value of CO2 leakage from geological storage on agro-ecosystem
摘要
Abstract
Carbon capture and storage (CCS) technology plays an important role in reducing global carbon emission. However, CCS project is facing many obstacles, particularly the leakage from carbon dioxide (CO2) storage sites severely threatens ground ecological systems. In this study, a manual control device was designed and constructed, on an agricultural ecological system threatened by leakage from CO2 storage sites, to simulate the scenarios of geologically stored CO2 leaking from underground to ground. The changes of several important parameters of an agricultural ecological system (AES) were observed and recorded so as to evaluate impacts of underground stored CO2 leaking on an AES, and then to establish the tolerable threshold value. The results showed that maize growth was negatively affected under different CO2 leakage amounts. In general, maize grew worse when CO2 leaking flux increased. For example, seedling of maize was severely hampered, both plant height and leaf amount decreased with increasing of CO2 leaking flux. Biomass for both underground and above ground with CO2 leaking was significantly less than that of control, photosynthesis of maize was affected, and soil pH value droped. As a result, the tolerable threshold value of CO2 leakage from geologically stored sites is 500-2000 g/(m2-d).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Key words
carbondioxide/pH value/geology/carbon capture and storage/agro-ecosystem/impact assessment/tolerable threshold value分类
天文与地球科学引用本文复制引用
伍洋,马欣,李玉娥,万运帆,张九天,仲平,贾莉..地质封存CO2泄漏对农田生态系统的影响评估及耐受阈值[J].农业工程学报,2012,28(2):196-205,10.基金项目
国家科技支撑计划(2011BAC08B03) （2011BAC08B03）
