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| 鄂东南低丘马尾松林和枫香林土壤异养呼吸及温湿度敏感性 | |
| 作者姓名： | Wang CH Chen FQ Wang Y Li JQ |
| 作者单位： | 1. 三峡大学,湖北宜昌,443000;北京林业大学森林培育教育部重点实验室,北京,100083 2. 三峡大学,湖北宜昌,443000 3. 北京林业大学森林培育教育部重点实验室,北京,100083 |
| 基金项目： | 国家“十一五”林业科技支撑计划项目(2006BAD03A16)资助 |
| 摘 要： | 采用野外监测方法,研究了鄂东南低丘地区主要森林类型枫香林和马尾松林土壤异养呼吸、土壤温湿度的年动态;并通过室内试验研究了土壤呼吸随土壤深度的变化以及表层土壤(0～5 cm)异养呼吸的温湿度敏感性,建立了表层土壤异养呼吸的温湿度响应模型,探讨全球温暖化对该区土壤异养呼吸的潜在影响.结果表明:枫香林和马尾松林0～5 cm土壤呼吸速率分别是5～10 cm、10～15 cm层的2.39、2.62倍和2.01、2.94倍,说明土壤异养呼吸主要发生在土壤表层(0～5 cm);枫香林和马尾松林0～5 cm、5～10 cm及10～15 cm土壤的Q10分别是2.10、1.86、1.78和1.86、1.77、1.44;枫香林和马尾松林表层土壤呼吸对温度(T)的响应符合指数模型R=αexp(βT)],对湿度(W)的响应符合二次函数模型(R=a+bW+cW2);0～5 cm土壤对温湿度双因子的响应符合lnR=a+bW+cW2+dT+eT2模型,且异养呼吸对湿度的响应具有温度依赖性,即在高温下敏感,低温下敏感性下降;应用表层土壤异养呼吸温湿度模型预测枫香林和马尾松林土壤异养呼吸年动态及总量,枫香林土壤异养呼吸量的模拟值比实测值略高... |
| 关 键 词： | 枫香林 马尾松林 土壤异养呼吸 Q10 |
Soil heterotrophic respiration and its sensitivity to soil temperature and moisture in Liquidambar formosana and Pinus massoniana forests in hilly areas of southeast Hubei Province, China |
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| Wang CH,Chen FQ,Wang Y,Li JQ.Soil heterotrophic respiration and its sensitivity to soil temperature and moisture in Liquidambar formosana and Pinus massoniana forests in hilly areas of southeast Hubei Province, China[J].Chinese Journal of Applied Ecology,2011,22(3):600-606. | |
| Authors: | Wang Chuan-hua Chen Fang-qing Wang Yuan Li Jun-qing |
| Institution: | WANG Chuan-hua1,2,CHEN Fang-qing1,WANG Yuan1,LI Jun-qing2(1China Three Gorges University,Yichang 443000,Hubei,China,2Ministry of Education Key Laboratory for Silviculture and Conservation,Beijing Forestry University,Beijing 100083,China) |
| Abstract: | Field monitoring was conducted to study the annual dynamics of soil heterotrophic respiration and soil temperature and moisture in Liquidambar formosana and Pinus massoniana forests in hilly areas of southeast Hubei Province,China.At the same time,laboratory experiment was performed to study the heterotrophic respiration rate along soil profile,and the sensitivity of surface soil(0-5 cm) heterotrophic respiration to soil temperature and moisture.Then,a model was established to valuate the potential effects ... |
| Keywords: | Liquidambar formosana forest Pinus massoniana forest soil heterotrophic respiration Q10 |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ | |