| 辽东山区天然次生林和落叶松人工林的土壤呼吸 |
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| 引用本文： | 张慧东,尤文忠,邢兆凯,魏文俊,赵刚,颜廷武.辽东山区天然次生林和落叶松人工林的土壤呼吸[J].水土保持学报,2011,25(3):198-201,224. |
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| 作者姓名： | 张慧东 尤文忠 邢兆凯 魏文俊 赵刚 颜廷武 |
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| 作者单位： | 辽宁省林业科学研究院,沈阳,110032 |
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| 基金项目： | 国家重点基础研究发展计划(2011CB403201); 辽宁省自然科学基金(20092018); 国家林业公益性行业专项(200704005/wb0503) |
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| 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。
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| 关 键 词： | 土壤呼吸 天然次生林 落叶松人工林 |
Soil Respiration of Natural Secondary Forest and Larch Plantation in Montane Region of Eastern Liaoning Province |
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| ZHANG Hui-dong,YOU Wen-zhong,XING Zhao-kai,WEI Wen-jun,ZHAO Gang,YAN Ting-wu.Soil Respiration of Natural Secondary Forest and Larch Plantation in Montane Region of Eastern Liaoning Province[J].Journal of Soil and Water Conservation,2011,25(3):198-201,224. |
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| Authors: | ZHANG Hui-dong YOU Wen-zhong XING Zhao-kai WEI Wen-jun ZHAO Gang YAN Ting-wu |
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| Institution: | ZHANG Hui-dong,YOU Wen-zhong,XING Zhao-kai,WEI Wen-jun,ZHAO Gang,YAN Ting-wu (Liaoning Academy of Forestry,Shenyang 110032) |
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| 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,P<... |
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| Keywords: | soil respiration rate secondary forest ecosystems larch plantation |
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