globalchange  > 气候变化与战略
CSCD记录号: CSCD:5055741
论文题名:
极端干旱对毛竹林土壤呼吸的影响
其他题名: Effects of Extreme Drought on Soil Respiration in the Phyllostachys pubescens Forest
作者: 徐升华1; 周本智2; 李谦2; 胡淑贞3
刊名: 中国农学通报
ISSN: 1000-6850
出版年: 2014
卷: 30, 期:1, 页码:122-130,138
语种: 中文
中文关键词: 土壤呼吸 ; 人工截雨 ; 土壤温度 ; 土壤含水量 ; 毛竹
英文关键词: soil respiration ; throughfall exclusion ; soil temperature ; soil water content ; Phyllostachys pubescens
WOS学科分类: FORESTRY
WOS研究方向: Forestry
中文摘要: 为了预测未来气候变化引起的干旱和高温对森林碳循环的影响,采用人工截雨的方法,创造极端干旱环境,研究极端干旱和较高土壤温度对人工毛竹林土壤呼吸的影响。结果表明:(1)人工截雨样地和对照样地的土壤呼吸月际变化分别为0. 63~2. 00 mumol/(m~2·s)和0. 66~2. 20 mumol/(m~2·s) 。土壤呼吸的月际变化与土壤温度的变化趋势基本相同,而与土壤含水量的变化趋势相反,即成负线性相关。(2)土壤温度可以分别解释截雨样地和对照样地土壤呼吸变异的65.5%和73.9%。基于耦合土壤温度和土壤含水量的多元线性模型,可以分别解释截雨样地和对照样地土壤呼吸变异的66. 9%和73. 4%。土壤含水量与土壤呼吸的关系不紧密。截雨样地和对照样地的Q_(10)。值分别为4. 44和5. 99。
英文摘要: In order to predict the effect of drought and high temperature on forest carbon cycling in the context of climate change, a throughfall exclusion experiment was carried out to explore effects of increased soil temperature and decreased soil water content on soil respirations in the bamboo forest in north Zhejiang of China. The results showed that: (1) monthly variation in soil respiration ranged from 0. 63 to 2. 00 mumol/(m~2·s) and 0. 66 to 2. 20 mumol/(m~2·s) in throughfall exclusion and control plots respectively. The soil respiration monthly variation followed the monthly variation of soil temperature and in contrast to the monthly variation of the soil water content. (2) Soil temperature could explain 65. 5% and 73. 9% of the variance of soil respiration in throughfall exclusion and control plots respectively. Multivariate linear model based on temperature and soil water content explained 66.9% and 73.4% of the variance of soil respiration in throughfall exclusion and control plots respectively. Soil water content had no significant relationship with soil respiration. Q_(10) values of throughfall exclusion and control plots were 4.44 and 5.99.
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/148707
Appears in Collections:气候变化与战略

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作者单位: 1.浙江省富阳市林业局, 富阳, 浙江 311400, 中国
2.中国林业科学研究院亚热带林业研究所, 富阳, 浙江 311400, 中国
3.浙江省富阳市科学技术局, 富阳, 浙江 311400, 中国

Recommended Citation:
徐升华,周本智,李谦,等. 极端干旱对毛竹林土壤呼吸的影响[J]. 中国农学通报,2014-01-01,30(1):122-130,138
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