| 林内和林窗冬季土壤呼吸特征 |
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| 引用本文： | 黄石德. 林内和林窗冬季土壤呼吸特征[J]. 福建林学院学报, 2009, 29(3) |
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| 作者姓名： | 黄石德 |
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| 作者单位： | 福建省林业科学研究院生态环境研究所,福建,福州,350012 |
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| 基金项目： | 福建省自然科学基金资助项目，国家林业局南方山地用材林培育重点实验室基金 |
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| 摘 要： | 采用L i-8100土壤碳通量测量系统测定福州国家森林公园的木荷和马尾松混交林林内和林窗土壤呼吸,并分析了枯落物层对土壤温度和湿度的影响,探讨土壤水热因子对土壤呼吸的驱动机制。结果表明,林窗土壤温度略高于林内;保留枯落物层处理的土壤湿度略高于排除枯落物层,表明枯落物层能减缓土壤水分的散失速率;林内和林窗土壤呼吸速率均值分别为1.28、1.35μmol.m-2.s-1,排除枯落物层后,分别减少了10.70%、23.22%;在林内,土壤温度与土壤呼吸的关系未达到显著水平,然而在林窗,土壤温度与土壤呼吸的关系达到显著水平;土壤湿度与土壤呼吸的关系均未达到显著水平;无论是林内或是林窗环境,土壤温度和土壤湿度的双因素模型均比单因素模型更好地解释土壤呼吸的变化。
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| 关 键 词： | 土壤呼吸 林内 林窗 土壤温度 土壤湿度 |
The research on winter soil respiration characteristic in the understory and gap |
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| HUANG Shi-de. The research on winter soil respiration characteristic in the understory and gap[J]. Journal of Fujian College of Forestry, 2009, 29(3) |
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| Authors: | HUANG Shi-de |
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| Affiliation: | HUANG Shi-de(Institute of Ecosystem and Environmental Research,Fujian Academy of Forestry,Fuzhou,Fujian 350012,China) |
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| Abstract: | Winter soil respiration of Schima superba and Pinus massoniana mixed forest in understory and gap,were measured in Fuzhou National Forestry Park,Fujian,China.CO2 effluxes rates was monitored using an infrared gas exchange analyzer,analyzed litter layers influence on soil temperature and moisture and discussed driving mechanism of soil respiration.The research showed soil temperature in the gap slightly higher than in the understory.Soil moisture in the reserving litter layers treatments was higher than in t... |
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| Keywords: | soil respiration understory gap soil temperature soil moisture |
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