| 北京山区典型针叶林树种蒸腾特性比较 |
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| 引用本文： | 王宇,陈丽华,余新晓,杨启红,杨新兵,肖洋,王小平. 北京山区典型针叶林树种蒸腾特性比较[J]. 北京林业大学学报, 2008, 0(Z2) |
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| 作者姓名： | 王宇 陈丽华 余新晓 杨启红 杨新兵 肖洋 王小平 |
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| 作者单位： | 北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室;北京市园林绿化国际项目合作管理办公室; |
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| 基金项目： | 北京市科委重大项目(D0706001000091); “十一五”国家科技支撑计划课题(2006BAD03A02); 国家林业科技支撑计划项目(2006BAD03A18) |
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| 摘 要： | 该文通过比较油松和侧柏的蒸腾特性,为北京生态涵养带抗旱树种的筛选提供基础数据。采用Li--6400型便携式光合仪在2006年5—10月对北京市密云水库典型针叶林(油松和侧柏)的蒸腾速率进行了测定。结果表明,油松和侧柏的日平均蒸腾速率分别为2.18和1.95mmol/(m2.s),日平均水分利用率分别为3.52和3.04μmol/mmol。油松和侧柏的水分利用率均在11:00时达到峰值,光合速率的变化趋势均为单峰曲线,且在12:00前后达到峰值。因此,油松和侧柏作为北京山区两种典型针叶树种具有相似的蒸腾特性,油松的日平均蒸腾速率和水分利用率均略高于侧柏,蒸腾作用受环境因子综合影响,气孔导度是影响油松和侧柏蒸腾速率的主要因子。
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| 关 键 词： | 油松 侧柏 蒸腾速率 水分利用率 气孔导度 光合速率 拟合模型 |
Comparison of transpiration characteristics of two typical coniferous species in Beijing mountainous area |
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| WANG Yu,CHEN Li-hua,YU Xin-xiao,YANG Qi-hong,YANG Xin-bing,XIAO Yang,WANG Xiao-ping. Key Laboratory of Soil , Water Conservation , Desertification Combating of Ministry of Education,School of Soil , Water Conservation,Beijing Forestry University,,P.R.China, Beijing Forestry , Parks. Comparison of transpiration characteristics of two typical coniferous species in Beijing mountainous area[J]. Journal of Beijing Forestry University, 2008, 0(Z2) |
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| Authors: | WANG Yu CHEN Li-hua YU Xin-xiao YANG Qi-hong YANG Xin-bing XIAO Yang WANG Xiao-ping. Key Laboratory of Soil Water Conservation & Desertification Combating of Ministry of Education School of Soil Water Conservation Beijing Forestry University P.R.China Beijing Forestry Parks |
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| Affiliation: | WANG Yu1,CHEN Li-hua1,YU Xin-xiao1,YANG Qi-hong1,YANG Xin-bing1,XIAO Yang1,WANG Xiao-ping2.1 Key Laboratory of Soil , Water Conservation & Desertification Combating of Ministry of Education,School of Soil , Water Conservation,Beijing Forestry University,100083,P.R.China,2 Beijing Forestry , Parks Department of International Cooperation,100029,P.R.China. |
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| Abstract: | The objective of this study is to provide references for the selection of afforestation tree species with drought resistance and lower water consumption in ecological conservation areas in Beijing through a comparison of transpiration characteristics of Pinus tabulaeformis and Platycladus orientalis.A portable photosynthesis system Li--6400 was used to measure the transpiration rate of the two species from May to October,2006 in Miyun Reservoir of Beijing.The results show that for the two species,1)the dail... |
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| Keywords: | Pinus tabulaeformis Platycladus orientalis transpiration rate water use efficiency stomatal conductance photosynthetic rate fitting model |
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