生态环境学报2025，Vol.34Issue(9)：1442-1451,10.DOI:10.16258/j.cnki.1674-5906.2025.09.011
内蒙古高原农作物挥发性有机物排放特征
Characteristics of Volatile Organic Compounds Emissions from Crops in the Inner Mongolian Plateau
摘要
Abstract
Farmland ecosystems are emerging as the third largest source of biogenic volatile organic compound(BVOCs)emissions,following forests and grasslands.Focusing on the main crops of the Inner Mongolian Plateau[corn(Zea mays L.),potato(Solanum tuberosum L.),and rice(Oryza sativa L.)],dynamic chamber sampling combined with ATD-GC/MS technology was employed to determine their BVOCs emission characteristics.By coupling parameters such as temperature and photosynthetically active radiation(PAR)using the G93 and G95 models,the emission rates under standard conditions(T=303 K,PAR=1000 μmol∙m-2∙s-1)were calculated.The results showed that:1)all three crops emitted 18 volatile organic compounds,including α-pinene,camphene,β-pinene,β-myrcene,α-phellandrene,3-carene,α-terpinene,p-cymene,limonene,γ-terpinene,terpinolene(monoterpene),isoprene,and benzene,toluene,ethylbenzene,m-xylene,p-xylene,o-xylene(BTEX).2)the emission rates of isoprene,monoterpene,and BTEX from corn were 15.8‒363,4.36‒94.5,and 46.9‒706 µg∙g-1∙h-1,respectively;those from potatoes were 4.47‒26.1,10.3‒149,and 5.76‒78.4 µg∙g-1∙h-1,respectively;and those from rice were 3.69‒12.7,3.52‒25.8,and 1.70‒15.1 µg∙g-1∙h-1,respectively.3)The emission rates of isoprene,monoterpene,and BTEX from corn under standard conditions were 156,9.49,and 125 µg∙g-1∙h-1,respectively.For potatoes,the rates were 16.9,39.6,and 14.1 µg∙g-1∙h-1,respectively.For rice,the corresponding values were 3.66,4.05,and 3.41 µg∙g-1∙h-1,respectively.The emission rates of BVOCs from major crops on the Inner Mongolian Plateau exhibited significant temperature and PAR dependencies,as well as diurnal variations.This result provides a scientific basis for studying the contribution of BVOC emission rates to regional environmental ozone concentrations on the Inner Mongolian Plateau.关键词
内蒙古高原/农作物/生物源挥发性有机物(BVOCS)/排放速率/动态箱采样法Key words
Inner Mongolia Plateau/crops/biogenic volatile organic compounds(BVOCs)/emission rates/dynamic chamber sampling method分类
资源环境引用本文复制引用
包雪儿,包海,赵玲玲,昂给拉玛..内蒙古高原农作物挥发性有机物排放特征[J].生态环境学报,2025,34(9):1442-1451,10.基金项目
国家自然科学基金项目(22266024) （22266024）
内蒙古自然科学基金项目(2022MS02003) （2022MS02003）
2024年大学生创新创业训练计划资金资助项目(S202410135031) （S202410135031）
