论文部分内容阅读
通过田间原位测量贵州省旱田农业土壤的N2 O释放 ,初步论述了我国南方亚热带旱田生态系统的N2 O释放特征及其影响因素 ;根据DNDC模型计算与田间测量在N2 O释放及其影响参数上的较好拟合结果 ,采用DNDC模型估算了高空间分辨率的贵州省 1 995年农业土壤N2 O释放量及其空间变化 ;定量揭示并讨论了施肥和耕作措施变化对该地区农业土壤N2 O释放通量和释放量的潜在影响
Based on the in situ measurements of N 2 O release from agricultural soils in dryland in Guizhou Province, the characteristics of N 2 O release and their influencing factors in dryland ecosystem in southern China were preliminarily discussed. Based on the DNDC model calculation and field measurements, DNDC model was used to estimate the spatial and temporal variation of N 2 O in agricultural soils from 1995 in Guizhou with high spatial resolution. Quantitatively, the effects of fertilization and tillage practices on soil N 2 O The potential impact of flux and release