题  目：DNDC模型在农业生态系统研究中的发展与应用

报告人：邓佳 博士（University of New Hampshire, USA）

邀请人：曹林奎 教授

时  间：8月15日（星期一）上午9:00

地  点：农业与生物学院3-101

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.

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。本报告主要介绍近几年DNDC模型在农业生态系统研究中的发展和应用，内容包括我国北方寒带生态 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。