Characteristics of CO2 release from forest soil in the mountains near Beijing

被引：0

作者：

Sun, Xiang Yang ^{[1
]}

Da Gao, Cheng ^{[1
,2
]}

Zhang, Lin ^{[1
]}

Li, Su Yan ^{[1
]}

Qiao, Yong ^{[1
]}

机构：

[1] Beijing Forestry Univ, Fac Water & Soil Conservat, Beijing 100083, Peoples R China

[2] Chinese Acad Forestry, Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 2011年 / 175卷 / 1-4期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

CO2; gas; Forest soil; Alkaline absorption method; Carbon balance; Carbon sink and release; CARBON-DIOXIDE; RESPIRATION; FLUXES;

D O I：

10.1007/s10661-010-1505-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

CO2 release from forest soil is a key driver of carbon cycling between the soil and atmosphere ecosystem. The rate of CO2 released from soil was measured in three forest stands (in the mountainous region near Beijing, China) by the alkaline absorption method from 2004 to 2006. The rate of CO2 released did not differ among the three stands. The CO2 release rate ranged from -aEuro parts per thousand 341 to 1,193 mg m (-aEuro parts per thousand 2) h (-aEuro parts per thousand 1), and the mean value over all three forests and sampling times was 286 mg m (-aEuro parts per thousand 2) h (-aEuro parts per thousand 1). CO2 release was positively correlated with soil water content and the soil temperature. Diurnally, CO2 release was higher in the day than at night. Seasonally, CO2 release was highest in early autumn and lowest in winter; in winter, negative values of CO2 release suggested that CO2 was absorbed by soil.

引用

页码：193 / 200

页数：8

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