首页    编委会    编辑部    历任主编    获奖信息    征稿简则    友情链接    English    旧版主页
  在线期刊
       最新录用
       当期目次
       过刊浏览

  下载专区
       版权协议
       征稿范文
       来稿登记表
       录用证明

  联系我们

投稿e-mail: jbnuns_sub@bnu.edu.cn

主编e-mail: jbnuns_eic@bnu.edu.cn

办公地点:北京师范大学 科技楼A区216,218,220室

电话:(010)58807851,58802050,58807872

传真:(010)58807851

通信处:北京市海淀区新街口外大街19号北京师范大学理科学报编辑部

邮政编码:100875

行政e-mail: jbnuns@bnu.edu.cn

本网站暂不提供全文下载,如需全文下载请点击

中国知网

 

标题

大兴安岭森林生态系统氮磷元素对碳循环的影响

作者

邵思雅 李方方 张 晶

机构

北京师范大学全球变化与地球系统科学研究院

摘要

结合陆地生物地球化学模型CENTURY,以大兴安岭呼中自然保护区森林生态系统为例,探究大兴安岭生态系统碳循环以及氮磷元素对碳循环的影响.模型模拟达到平衡状态时的植被碳库碳储量为4874.47 g•m-2,在观测值2430.08~10001.7 g•m-2的范围之内,土壤碳库的平衡值为8353.42 g•m-2,与观测值8244.23 g•m-2差别不大,说明CENTURY模型在研究区域有较好的适用性.但Century模型对营养元素的限制作用模拟过于简单,不能满足动态模拟植物生长状况的要求,因此需要对模型进行改进来达到更好的模拟效果.改进模型中氮磷限制作用产生方案后,模拟的植被碳库、土壤碳库、通量和生态系统碳储量都明显下降.植被碳库受氮磷元素限制作用影响较大,较修改前下降31%以上.土壤碳库中表层(0~10 cm)碳库受到的影响程度更大,碳储量约降低33%.氮库在改进限制作用产生方案后,除了表层代谢库有较小的升高趋势外,其余库均呈现出增高趋势;与此相反,土壤磷库则表现出增加趋势,植被磷库表现出降低趋势,综合起来生态系统整体磷库表现出降低趋势,但降低幅度较小,为6%.

关键词

CENTURY模型; 氮磷元素限制; 碳循环; 大兴安岭; 落叶松

引用

邵思雅 李方方 张 晶. 大兴安岭森林生态系统氮磷元素对碳循环的影响[J]. 北京师范大学学报(自然科学版), 2015, 51(3) : 306-312

基金

全球变化研究国家重大科学研究计划资助项目(2010CB951800)

分类号

P467, X144

DOI

10.16360j.cnki.jbnuns.2015.03.015

Title

Impact of nitrogen and phosphorus limitation on carbon cycle of forest ecosystem in the Greater Khingan Mountains

Author

SHAO Siya LI Fangfang ZHANG Jing

Affiliations

College of Global Change and Earth System Sciences, Beijing Normal University

Abstract

Huzhong Reserve was studied to explore impact of nitrogen and phosphorus limitation on carbon cycle of forest ecosystem in the Greater Khingan Mountains by biogeochemical model CENTURY. With the model at balance, vegetation carbon storage equilibrium state was found to be 4874.47 g•m-2, well with in the range of observed values of 2430.08~10001.7 g•m-2, the soil equilibrium state was found to be 8353.42 g•m-2, similar to the observed value of 8244.23 g•m-2. These data suggest good applicability of CENTURY model in the study area. However, the limiting process of nitrogen and phosphorous is over-simplified in the model and needs to be modified. In the present study, modifications were made. It was found that modeled vegetation and soil carbon storage, soil sink, ecosystem carbon storage all decrease significantly. The vegetation carbon storage decreased substantially by 31%, while the surface soil (0~10 cm) carbon storage decreased even more drastically by 33%. Likewise, other than surface metabolic nitrogen storage which had a tiny increasing trend, all nitrogen storages showed a decreasing trend. On the contrary, the soil phosphorous storage showed an increasing trend and the vegetation phosphorus storage showed a declining trend, which added up to a small decrease of the ecosystem phosphorus storage of approximately 6%.

Key words

CENTURY model; N and P limitation; carbon cycle; the Greater Khingan Mountains; larch

cite

SHAO Siya LI Fangfang ZHANG Jing. Impact of nitrogen and phosphorus limitation on carbon cycle of forest ecosystem in the Greater Khingan Mountains[J]. Journal of Beijing Normal University(Natural Science), 2015, 51(3) : 306-312

DOI

10.16360j.cnki.jbnuns.2015.03.015

Copyright © 2014 Journal of Beijing Normal University (Natural Science)
Designed by Mr. Sun Chumin. Email: cmsun@mail.bnu.edu.cn