China-DNDC模型种养匹配算法环境效益养分循环种养养分循环利用是我国绿色农业发展的关键路径,但以经验公式法估算农田作物对养殖粪尿的消纳量,会带来较大的不确定性.本研究建立了一种基于氮素生物地球化学循环和环境效益最优的方法计算养殖(猪当量)排放和种植农田匹配算法.通过开发网络版China-DNDC模型并建立相关数据库,以...
本文根据贵州省玉米-油菜轮作田、休耕地和大豆-冬小麦轮作田的N2O释放通量及其影响因子季节变化的田间观测结果,对比分析了DNDC模型计算与三试验田田间观测在N2O释放通量及其主要影响因子季节变化上的拟合程度.结果表明,对N2O释放通量、土壤NO3-和NH4+含量、土壤湿度和土温,模型计算结果与田间观测具有相似的季节变化模式和...
RothC and DNDC, two process-based agroecosystem models widely utilized for quantifying soil carbon (C) sequestration, were tested against datasets of soil organic carbon (SOC) measured in two long-term experiments with winter wheat-summer maize rotation at field soils in North China. In the study...
Prior to modelling, validation of the DNDCYan LIAOWen-liang WUFan-qiao MENGHu LIJournal of Integrative AgricultureLiao Y, Wu WL, Meng FQ, Li H (2016) Impact of agricultural intensification on soil organic carbon: a study using DNDC in Huantai County, Shandong Province, China. J Integr ...
(3)7.4uL池体积,比其它RI检测器小25%,有效降低溶剂扩散作用。 (4)先进的Peltier温度控制器,无需水浴。 技术参数: (1)折光指数差的范围(RIU):- 0.0047 - + 0.0047; (2)峰间噪音:<2.0*10-9; (3)流通池体积:7.4uL; (4)相应时间:0.1 - 5s; ...
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Recently a new version of DNDC, China-DNDC, was developed. The new model improved its capability of predicting the fluxes of all three terrestrial greenhouse gases: nitrous oxide (N 2 O), carbon dioxide (CO 2 ), and methane (CH 4 ), as well as other important indicators such as crop ...
Modeling im- pacts of film mulching on rainfed crop yield in Northern China with DNDC. Field Crops Res, 2014, 155: 202-212Modeling impacts of film mulching on rainfed crop yield in Northern China with DNDC[J] . Juan Han,Zhikuan Jia,Wei Wu,Changsheng Li,Qingfang Han,Jie Zhang.Field ...