Soil Respiration of Natural Secondary Forest and Larch Plantation in Montane Region of Eastern Liaoning Province

ZHANG Hui-dong; YOU Wen-zhong; XING Zhao-kai; WEI Wen-jun; ZHAO Gang; YAN Ting-wu

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Soil Respiration of Natural Secondary Forest and Larch Plantation in Montane Region of Eastern Liaoning Province

更新时间：2024-11-07

- Soil Respiration of Natural Secondary Forest and Larch Plantation in Montane Region of Eastern Liaoning Province
- Vol. 25, Issue 3, (2011)
- 作者机构：
  
  辽宁省林业科学研究院,沈阳,110032
- 作者简介：
- 基金信息：
- DOI：
  CLC： S718.55
- Published：2011
- 稿件说明：
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ZHANG Hui-dong, YOU Wen-zhong, XING Zhao-kai, et al. Soil Respiration of Natural Secondary Forest and Larch Plantation in Montane Region of Eastern Liaoning Province[J]. 2011, 25(3).
DOI：

ZHANG Hui-dong, YOU Wen-zhong, XING Zhao-kai, et al. Soil Respiration of Natural Secondary Forest and Larch Plantation in Montane Region of Eastern Liaoning Province[J]. 2011, 25(3). DOI：

摘要

在2008-2009年生长季

利用Licor-8100对辽东山区天然次生林和落叶松人工林的土壤呼吸速率及其主要影响因子进行了测定。结果表明:辽东山区2种森林类型的土壤呼吸速率日变化均呈单峰型曲线;土壤呼吸速率与林地10cm的土壤温度相关性最好

相关关系分别为y=0.3614e0.1219x(R2=0.702 0

P<0.05)和y=0.9303e0.0812x(R2=0.816 4

P<0.05);与林地土壤湿度的相关性不显著;2种森林类型林地土壤年释放碳量分别为433.08

538.46gC/(m2.a)

天然次生林土壤碳的年释放碳量比人工林低近20%。研究结果说明辽东山区天然次生林在森林的固碳增汇过程中具有更重要的作用。

Abstract

CO2 effluxes rate was monitored using an infrared gas exchange analyzer(Licor-8100) from May to October.Simultaneously

soil temperature and moisture were also recorded.The results showed that the diurnal fluctuation of CO2 effluxes appeared a single peak.The relationship between soil respiration rate(y) and the variable of soil temperature(t) and soil moisture(w) at 10 cm soil depth could be described by the following exponential equation:y=0.3614e0.1219x(R2=0.702 0

P<0.05)and y=0.9303e0.0812x(R2=0.816 4

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