Acta Agrestia Sinica ›› 2018, Vol. 26 ›› Issue (2): 284-288.DOI: 10.11733/j.issn.1007-0435.2018.02.003

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Advances in the Influences of Precipitation and Nitrogen Deposition Change on the Carbon Cycle of Grassland Ecosystem

ZHANG Xiao-lin1,2, ZHAI Peng-hui3, HUANG Jian-hui4   

  1. 1. College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China;
    2. State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou, Gansu Province 730000, China;
    3. College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China;
    4. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
  • Received:2017-10-24 Revised:2018-05-15 Online:2018-04-15 Published:2018-07-05

降水和氮沉降对草地生态系统碳循环影响研究进展

张晓琳1,2, 翟鹏辉3, 黄建辉4   

  1. 1. 山西农业大学动物科技学院, 山西 太谷 030801;
    2. 兰州大学生命科学学院草地农业生态系统国家重点实验室, 甘肃 兰州 730000;
    3. 山西农业大学农学院, 山西 太谷 030801;
    4. 中国科学院植物研究所植被与环境变化国家重点 实验室, 北京 100093
  • 通讯作者: 黄建辉
  • 作者简介:张晓琳(1987-),女,汉族,山东淄博人,博士,讲师,E-mail:alleenzhang@126.com
  • 基金资助:

    兰州大学草地农业生态系统国家重点实验室开放性课题(SKLGAE201604);国家自然科学基金项目(31430016,31670483,31572452)资助

Abstract:

As global changes intensify, terrestrial ecosystems carbon cycle has attracted much attention. In recent years, influences of precipitation pattern change and nitrogen deposition increase on the ecosystems carbon cycle are deeply studied. We reviewed the effects of precipitation pattern change and nitrogen deposition increase on grassland ecosystem carbon cycle and its internal mechanism under global climate change. Changes in precipitation amount, timing and frequency, or nitrogen deposition amount, frequency and form could alter the composition and structure of community by the ways of changing soil water content, soil temperature, soil nutrient and the soil microbial activity, and then influence the ecosystem carbon cycle finally. However, whether interactive effects between precipitation pattern and nitrogen disposition exist in different regions have no uniform conclusion yet. Therefore, more studies are needed to explore the response mechanisms of ecosystem carbon cycle to precipitation and nitrogen deposition under global climate change.

Key words: Carbon cycle, Precipitation pattern, Nitrogen disposition, Grassland ecosystem

摘要:

随着全球变化的不断加剧,陆地生态系统碳循环备受关注,近年来预测未来降水格局变化和氮沉降增加对草地生态系统碳循环影响的研究不断深入。本文综述了全球背景下降水格局变化和氮沉降增加对草地生态系统碳循环的影响及其内在机理。降水量、强度、时间分布和频度以及氮沉降量、频度和形态的变化,通过改变土壤含水量、土壤温度、土壤养分及微生物活性影响生态系统的物种组成和结构,最终影响生态系统水平的碳循环。降水格局变化和氮沉降增加对生态系统水平碳循环是否存在交互作用没有统一的结论,因此在将来的研究中应采用多因子的实验,才能够更好的研究未来全球变化下生态系统碳循环的响应机理。

关键词: 碳循环, 降水格局, 氮沉降, 草地生态系统

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