[1]张 军,刘 婷,李安迪,等.不同苔藓斑块对亚高山针叶林土壤呼吸和有机碳累积的影响[J].山地学报,2019,(01):21-29.[doi:10.16089/j.cnki.1008-2786.000395]
　ZHANG Jun,LIU Ting,LI Andi,et al.Effects of Different Moss Patches on Soil Respiration and Organic Carbon Accumulation in Subalpine Coniferous Forests[J].Mountain Research,2019,(01):21-29.[doi:10.16089/j.cnki.1008-2786.000395]
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不同苔藓斑块对亚高山针叶林土壤呼吸和有机碳累积的影响()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2019年01期
页码:
21-29
栏目:
山地环境
出版日期:
2019-03-10

文章信息/Info

Title:
Effects of Different Moss Patches on Soil Respiration and Organic Carbon Accumulation in Subalpine Coniferous Forests
文章编号:
1008-2786-(2019)1-021-09
作者:
张 军1; 2;  刘 婷3;  李安迪1; 2;  孙守琴1*
1. 中国科学院、水利部成都山地灾害与环境研究所, 成都610041; 2. 中国科学院大学, 北京100049; 3.四川师范大学 生命科学学院, 成都610101
Author(s):
ZHANG Jun1; 2;  LIU Ting3;  LI Andi1; 2;  SUN Shouqin1*
1. Institute of Mountain Hazards and Environment, CAS, Chengdu 610014, China; 2. University of Chinese Academy of Sciences,Beijing 100049, China; 3.College of Life Science, Sichuan Normal University, Chengdu 610101, China;
关键词:
贡嘎山;  苔藓斑块;  土壤呼吸;  土壤有机碳
Keywords:
the Gongga Mountain;  bryophyte patches;  soil respiration;  soil organic carbon
分类号:
X173
DOI:
10.16089/j.cnki.1008-2786.000395
文献标志码:
A
摘要:
苔藓植物作为森林生态系统最常见的地被植物之一,对生态过程起着重要调控作用。为探明不同苔藓植物对亚高山生态系统碳循环过程的影响,本文以封闭式动态气室法,对川西贡嘎山东坡峨眉冷杉生态系统赤茎藓(Pleuroziu schreberi)和星塔藓(Hylocomiastrum pyrenaicum)两种苔藓斑块土壤以及裸地斑块土壤CO2排放速率进行了定位观测,同时探讨了不同苔藓斑块对土壤有机碳累积的影响及潜在途径。结果显示:(1)苔藓植物显著改变了亚高山针叶林土壤CO2排放速率及其季节变化特征,但不同苔藓植物的影响程度具有差异:赤茎藓和星塔藓作用下土壤CO2排放速率分别增加了28.5%和46.8%,星塔藓与赤茎藓相比其对土壤CO2排放的促进作用更显著;(2)苔藓斑块对土壤有机碳(SOC)和溶解性有机碳(DOC)的影响具有物种特异性,两种苔藓中,赤茎藓能够显著促进SOC和DOC累积,但星塔藓的影响不显著。该结果反映了亚高山生态系统不同苔藓物种在促进生态系统碳循环方面的生态功能的差异,由此,在开展亚高山生态系统碳循环以及土壤有机碳储量研究时,应充分考虑苔藓物种对土壤碳过程/碳平衡的作用机制和生态功能差别。
Abstract:
Bryophytes are one of the dominating vegetative communities in the bottom layer of subalpine and other related ecosystems, and play an important role in regulating ecological processes. In this study, carbon dioxide(CO2)emission rates from bare soil, bryophytes Pleuroziu schreberi- and Hylocomiastrum pyrenaicum-covered soils were investigated in a subalpine coniferous forest in the Gongga Mountain, western Sichuan, China, in order to reveal the roles of bryophyte patches in regulating soil C cycling processes. And then it compared the accumulation of soil organic carbon(SOC)in the mentioned soils. Results suggested that bryophyte patches significantly increased CO2 emission rates, with an increase of CO2 emission rates 28.5% and 46.8% in the P. schreberi- and H. pyrenaicum-covered soils, respectively, than one in bare soil. Compared with bryophyte-covered soils, the bare soil had a larger seasonal variation in CO2 emission rates. Accumulation of SOC and dissolved organic carbon(DOC)were promoted by P. schreberi but not by H. pyrenaicum, suggesting a species-specific impact of bryophyte patches on these parameters. The results demonstrate the different ecological roles of bryophyte species in regulating C cycling in subalpine forest ecosystems, which should be included into the modelling of carbon cycling in advanced research.

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备注/Memo

备注/Memo:
收稿日期(Received date):2018-07-30; 改回日期(Accepted date): 2019-01-09
基金项目(Foundation item):国家自然科学基金(41473078; 41273096)。[National Natural Science Foundation of China(41473078; 41273096)]
作者简介(Biography):张军(1994-), 男, 硕士研究生, 山东临沂, 从事高山植物对气候变化响应的研究。[ZHANG Jun(1994-), male, M.Sc. candidate, born in LinYi, Shandong Province, engaged in alpine plants response to climate change research]E-mail: zhangjun171@mails.ucas.ac.cn
*通讯作者(Corresponding author):孙守琴, 女, 博士, 副研究员,从事高山生态系统对气候变化的响应研究。[SUN Shouqin, Female, Ph.D., associate professor, engaged in alpine ecosystem response to climate change research] E-mail:shouqinsun@imde.ac.cn
更新日期/Last Update: 2019-01-30