报告题目：基于DNDC模型的北方寒带生态系统及美国奶牛养殖场NH3排放模拟研究

　　报告人：邓佳博士（美国新罕布什尔大学）

　　报告时间： 2016年8月10日 14：00

　　报告地点： LAPC多功能厅

　　报告内容简介：

　　DNDC模型是一个描述陆地生态系统碳和氮生物地球化学过程的计算机模拟模型。该模型以化学热力学和元素运动为基础，通过耦合碳、氮和水在生态系统中的迁移与转化，模拟植物生长、土壤固碳、微生物活动、温室气体排放、营养元素淋失等基本生物地球化学过程。DNDC模型现已在世界范围内被广泛应用于模拟农作物产量、土壤固碳、硝酸盐淋失以及多种碳和氮气体的排放。本报告主要介绍DNDC模型在近几年的发展和应用，内容包括北方寒带生态系统CO2和CH4排放的模拟，美国加州农田N2O排放的模拟和奶牛养殖场NH3排放的模拟。

　　报告人简介：

　　Dr. Jia Deng received a Bachelor degree in Soil Science and Plant nutrition from China Agricultural University, Beijing, China in 2006 and Ph.D. degree in Atmospheric Physics and Atmospheric Environment from the Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China in 2011. He is currently appointed as a research scientist in the Earth Systems Research Center, University of New Hampshire, USA.

　　His research interests include field studies and modeling of terrestrial ecosystems and biogeochemistry, mainly focusing on carbon and nitrogen cycling and trace gases (N2O, NOx, CH4, CO2) emissions under a changing global environment. He is currently in several research projects that involve modeling carbon gases fluxes from northern peatlands, nitrogen gases fluxes from croplands and livestock systems, and the integrated effect of greenhouse gas emissions, land use change, and managements on climate change at landscape scales.