| 云南松光合特性日进程及与叶面微气象因子的相关性分析 |
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| 引用本文： | 刘 娟,王健敏,陈晓鸣,杨子祥,梁军生.云南松光合特性日进程及与叶面微气象因子的相关性分析[J].林业科学研究,2010,23(3):448-452. |
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| 作者姓名： | 刘 娟 王健敏 陈晓鸣 杨子祥 梁军生 |
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| 作者单位： | 中国林业科学研究院资源昆虫研究所,国家林业局资源昆虫培育与利用重点实验室,云南,昆明,650224 |
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| 基金项目： | 云南省应用基础研究重点项目(2006C0015Z)"利用蛀干害虫作为指示昆虫诊断森林健康研究"; 国家林业局林业公益性行业科研专项(200804001)"中国森林对气候变化的响应与林业适应对策研究";国家林业局948项目(2009-4-37)"利用昆虫诊断森林健康评价指标体系及技术引进" |
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| 摘 要： | 云南松(Pinus yunnanensis Franch.)是常绿针叶乔木,云南的重要乡土树种.在云南的亚热带高原,从南到北,从东到西,海拔700～3200m都有大面积分布,其森林面积约占云南森林面积的70%1],是云贵高原荒山造林的先锋树种,不仅具有较强的水土保持、水源涵养、改善环境,同时提供大量的建筑用材和林副产品,在生态经济建设中发挥了重大作用2].有关云南松形态特征、分子遗传、良种选育、木材利用等多方面的研究取得了一些成果3-8],对其光合生理生态特性方面研究较少.光合作用是植物一切生理活动的基础,其大小不仅与自身遗传特性有关,而且受众多环境因子的影响9].
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| 关 键 词： | 云南松 光合日进程 叶面微气象因子 |
Diurnal Course of Photosynthetic Characteristics of Pinus yunnanensis
and Its Correlation with Leaf Surface Micro-meteorological Factors |
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| LIU Juan,WANG Jian-min,CHEN Xiao-ming,YANG Zi-xiang and LIANG Jun-sheng.Diurnal Course of Photosynthetic Characteristics of Pinus yunnanensis
and Its Correlation with Leaf Surface Micro-meteorological Factors[J].Forest Research,2010,23(3):448-452. |
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| Authors: | LIU Juan WANG Jian-min CHEN Xiao-ming YANG Zi-xiang and LIANG Jun-sheng |
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| Institution: | Research Institute of Resource Insects, Chinese Academy of Forestry; Key Laboratory of Breeding and Utilization of Resource Insects,State Forestry Administration, Kunming 650224, Yunnan, China;Research Institute of Resource Insects, Chinese Academy of Forestry; Key Laboratory of Breeding and Utilization of Resource Insects,State Forestry Administration, Kunming 650224, Yunnan, China;Research Institute of Resource Insects, Chinese Academy of Forestry; Key Laboratory of Breeding and Utilization of Resource Insects,State Forestry Administration, Kunming 650224, Yunnan, China;Research Institute of Resource Insects, Chinese Academy of Forestry; Key Laboratory of Breeding and Utilization of Resource Insects,State Forestry Administration, Kunming 650224, Yunnan, China;Research Institute of Resource Insects, Chinese Academy of Forestry; Key Laboratory of Breeding and Utilization of Resource Insects,State Forestry Administration, Kunming 650224, Yunnan, China |
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| Abstract: | Diurnal changes of photosynthesis of Pinus yunnanensis and its influencing factors were studied in dry season. The results indicated that in the dry season, the diurnal course of photosynthesis of P. yunnanensis occurred regularly with the environmental factors change. The curve of net photosynthetic rate (Pn) and transpiration rate (Tr) had a diurnal change with one-peak curve, the peak of Pn occurred at 14:00 and the peak of Tr appeared at 15:00. There was no "midday depression of photosynthesis". The different meteorological factors influencing the photosynthesis were different. The photosynthetic active radiation (PAR) was the ecological factor directly effecting on the Pn and stomatal conductance (Cond) of P. yunnanensis, the main factors affecting Tr were temperature leaf (Tl) and CO2 . The course of air humidity on the dry season were lower, and its effects on photosynthesis was not significant, which showes that the P.yunnanensis has a strong physiological adaptability on dry season. |
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| Keywords: | Pinus yunnanensis diurnal course of photosynthesis leaf surface micro-meteorological factors |
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