IMHE OpenIR  > 山地表生过程与生态调控重点实验室
贡嘎山生态系统土壤呼吸带谱特征
Alternative TitleCharacteristics of Mountain Ecosystem Soil Respiration along an Elevation Gradient on Gongga Mountain
彭亮1,2; 彭尽晖1; 孙守琴2; 吴艳宏2; 何刚3
Corresponding Author孙守琴
2015
Source Publication山地学报
ISSN1008-2786
Volume33Issue:6Pages:696-702
Other Abstract

对贡嘎山高山生态系统2 013~3 650 m海拔梯度上的土壤呼吸速率特征、时空变化规律及其与土壤温湿度、土壤有机碳、全氮等的关系进行了分析,结果表明:随海拔的升高,土壤呼吸速率先逐渐增加然后降低,土壤呼吸最大值出现在海拔2 750 m处。土壤呼吸速率在8月初最高,12月初最低。随着季节的变化,一天中土壤呼吸速率最高和最低值出现的时间也会发生变化。8月土壤呼吸值日变化范围最大,最低和最高值分别出现在9:30和15:00,5—7月以及9—11月土壤呼吸速率的最低值和最高值分别出现在7:30点和13:30。进入秋冬季(10—12月)土壤呼吸速率日变化特征减弱,尤其是进入12月后无明显日变化特征。土壤温度是影响土壤呼吸时空变异的主要因子;土壤有机碳和全氮含量也是影响土壤呼吸的因子;土壤湿度并不是影响土壤呼吸速率的贡嘎山高山生态系统重要因素。

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Temporal and spatial variation of soil respiration along an altitudinal gradient ( 2 013 ~ 3 650 m a. s. l. ) in east slopeof Gongga Mountain,Sichuan province,China,and its relationships with soil temperature,soil moisture, soil organic carbon and total nitrogen content werestudied in this study. Results indicated that soil respiration
ratefirst increased and then decreased with theincreaseof altitude. Themaximum of soil respiration was observed at sites in 2 750 m a. s. l. Temporally,thesoil respiration ratewas highest in August and was lowest in December,so does thedaily variations of soil respiration Theminimum and maximum of daily soil respiration in August  ereseparately observed at 9: 30 and 15: 00,whilethat in September to November,wereobserved at 7: 30 and 13: 30,respectively. Thedaily variations of soil respiration weresmall in winter ( October to December) ,especially thosein December
werenegligible. Soil temperatureweremain factors to influencing temporal and spatial variation of soil respiration, Soil organic carbon and soil total nitrogen content werefactors influencing soil respiration,Soil moisturewas not influenced soil respiration ratein Gongga Mountain forest ecosystem .

Keyword高山生态系统 土壤呼吸 海拔梯度 月变化 日变化
Subject AreaS152
DOI10.16089/j.cnki.1008-2786.000084
Indexed ByCSCD ; 北大中文核心
Language中文
CSCD IDCSCD:5642082
Funding Organization中科院知识创新工程青年人才类方向项目(KZCX2-EW-QN310) ; 自然科学基金项目(41273096)
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/13925
Collection山地表生过程与生态调控重点实验室
Affiliation1.湖南农业大学园艺园林学院,湖南长沙410128
2.中国科学院水利部成都山地灾害与环境研究所 山地表生过程与生态调控重点实验室,四川成都610041;
3.四川师范大学生命科学学院,四川成都610068
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
彭亮,彭尽晖,孙守琴,等. 贡嘎山生态系统土壤呼吸带谱特征[J]. 山地学报,2015,33(6):696-702.
APA 彭亮,彭尽晖,孙守琴,吴艳宏,&何刚.(2015).贡嘎山生态系统土壤呼吸带谱特征.山地学报,33(6),696-702.
MLA 彭亮,et al."贡嘎山生态系统土壤呼吸带谱特征".山地学报 33.6(2015):696-702.
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