陆面模式中氮循环过程的引入Ⅰ:模式介绍及站点验证（英文）

论文摘要

陆地生态系统氮循环对碳循环过程及其对气候变化的反馈具有重要的影响,但当前陆面模式多数都没有考虑氮循环过程对碳循环过程的限制。本研究基于氮在土壤-植被-大气中的传输交换过程,将氮循环过程引入到陆面模式AVIM（Atmosphere-Vegetation Interaction Model）中,发展形成包含碳氮耦合过程的新版模式AVIM-CN。与2004-05年当雄生态系统定位站通量观测数据相对比,模式中引入氮循环过程后,高寒草甸的总初级生产力模拟值从1.1403 gC m-2d-1降到了0.7073 gC m-2d-1,前者更接近通量站的观测值0.5407 gC m-2d-1。生态系统呼吸的模拟值也从1.7695 gC m-2d-1降到了1.0572 gC m-2d-1,更接近对应的通量观测值0.8034 gC m-2d-1。整体而言,在模式中考虑氮的限制作用后,当雄站的热量通量和碳通量的模拟值更接近实测值。不考虑氮过程对碳过程的限制,模式高估了约40%的陆地生态系统碳通量。

论文目录

• 1. Introduction
• 2. Model, data, and methods
•   2.1 Model description
•   2.2 Data and modeling protocol
• 3. Model results and analysis
• 4. Conclusions and discussion

文章来源

类型: 期刊论文

作者: YANG Xiujing,DAN Li,YANG Fuqiang,PENG Jing,LI Yueyue,GAO Dongdong,JI Jinjun,HUANG Mei

关键词: 碳氮耦合,氮限制,陆面模式,碳氮水循环

来源: Atmospheric and Oceanic Science Letters 2019年01期

年度: 2019

分类: 基础科学

专业: 气象学

单位: Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences,College of Earth and Planetary Sciences, University of Chinese Academy of Sciences,Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences,School of Atmospheric Sciences, Chengdu University of Information and Technology,Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences

基金: supported by a project of the National Key Research and Development Program of China [grant number2016YFA0602501],a project of the National Natural Science Foundation of China [grant numbers 41630532 and41575093]

分类号: P467

页码: 50-57

总页数: 8

文件大小: 1148K

下载量: 72