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北亚热带次生栎林和人工松林土壤呼吸日变化

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2010年01期
Page:
19-23
Column:
研究论文
publishdate:
2010-01-30

Article Info:/Info

Title:
Soil respiration of Quercus variabilis Bl.and Pinus taeda L.forest ecosystems in northern subtropics areas of China
Author(s):
ZHANG Zengxin SHI Zheng HE Rong WANG Guobing TANG Yanfei RUAN Honghua*
Jiangsu Key Laboratory of Forestry Ecological Engineering, Nanjing Forestry University, Nanjing 210037, China
Keywords:
soil respiration secondary oak forest pine plantation northern subtropic
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2010.01.005
Document Code:
A
Abstract:
Evaluation of soil respiration is of major importance in the context of increasing CO2 concentration in the global carbon cycle. The daily variation in soil respiration was measured by LI-8100 in a secondary oak forest and a pine plantation, respectively, at Xiashu experimental site in Jiangsu province, China. The results showed that there were significant daily variations in the soil respiration for both forests, and daily soil respiration showed a monopeak trend, with its peak occurring in the period from 12:00am to 4:00pm. Soil respiration for the both of secondary oak forest and pine plantation increased from March to June, and decreased from July to September. The soil respiration of secondary oak and pine plantation was significantly correlated with the temperature of the soil at the depth of 5 cm and ground temperature, respectively. Our finding indicated that the CO2 emission might increase in altering an oak forest into a pine plantation.

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Last Update: 2010-02-09