The Comparative Study of the Apparent Quantum Yield and Maximum Photosynthesis Rates of 3 Typical Vegetation Types on Qinghai-Tibetan Plateau

doi:10.11733/j.issn.1007-0435.2007.05.008

›› 2007, Vol. 15 ›› Issue (5): 442-448.DOI: 10.11733/j.issn.1007-0435.2007.05.008

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The Comparative Study of the Apparent Quantum Yield and Maximum Photosynthesis Rates of 3 Typical Vegetation Types on Qinghai-Tibetan Plateau

ZHANG Fa-wei^1,2, LI Ying-nian¹, LI Hong-qin³, WANG Qin-xue⁴, DU Ming-yuan⁵, ZHAO Liang¹, WANG Shi-ping¹

1. Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai Province 810001, China
2. Graduate School, Chinese Academy of Sciences, Beijing 100049, china;
3. Graduate school, Qinghai University, Xining, Qinghai Province 810016, China;
4. National Institute for Environmental Studies, Tsukuba, 3050053, Japan;
5. National Institute of Agro-environmental Sciences, Tsukuba, 3058604, Japan

Received:2006-09-12 Revised:2007-06-25 Online:2007-10-15 Published:2007-10-15

青藏高原3种主要植被类型的表观量子效率和最大光合速率的比较

张法伟^1,2, 李英年¹, 李红琴³, 王勤学⁴, 杜明远⁵, 赵亮¹, 汪诗平¹

1. 中国科学院西北高原生物研究所, 青海, 西宁, 810001;
2. 中国科学院研究生院, 北京, 100049;
3. 青海大学研究生部, 青海, 西宁, 810016;
4. 日本国立环境研究所, 日本, 筑波, 3050053;
5. 日本农业环境技术研究所, 日本, 筑波, 3058604

通讯作者: 李英年,E-mail:ynli@nwipb.ac.cn
作者简介:张法伟(1981- ),男,河南人,硕士研究生,研究方向为植物生态
基金资助:
中国科学院知识创新工程重大项目(KZCX1-SW-01-01A);国家重点基础研究发展规划项目(2002CB412501);“21世纪亚洲陆地生态系统碳管理为目标的综合碳收支研究”以及中日合作“亚太地区环境创新战略计划(APEIS)”

Abstract

Abstract: Based on the continuous CO₂ flux data monitored by Eddy Covariance Method at Haibei Station, the variations of apparent quantum yield(a), maximum photosynthesis rate (P_max), and ecosystem respiration rate (R_eco) were analyzed for three vegetation types (alpine Kobresia humilis(C. A. Mey) Serg. meadow, alpine Potentilla fruticosa L. shrubland, and alpine K.tibetica Maxim. wetland) in growing season (from June to September) on the Qinghai-Tibetan Plateau. The results show that the daytime net ecosystem exchange (NEE) fitted very well with Photosynthetic photon flux density (PPFD) in a rectangular hyperbola equation in three types of vegetation ecosystems. Their a, P_max, and R_eco showed the similar seasonal changing pattern, the minimum was appeared in June and maximum in July or August; the a, P_max and R_eco of the alpine K. humilis meadow was higher than that of the other two vegetation types and no significant differences of a, P_max, and R_eco between alpine P.fruticosa shrubland and alpine K.tibetica wetland were detected.

Key words: Qinghai-Tibetan Plateau, Eddy Covariance Method, Apparent quantum yield, Maximum photosynthesis rate, Ecosystem respiration rate

摘要： 以海北高寒草甸生态系统定位站的涡度相关系统连续观测的CO₂通量数据为基础,分析了青藏高原的高寒矮嵩草(Kobresia humilis)草甸、高寒金露梅(Potentilla fruticosa)灌丛草甸和高寒藏嵩草(Kobresia tibetica)沼泽化草甸等3种主要植被类型在2005年植物生长季(6-9月)的表观量子产额(a)、最大光合速率(P_max)和呼吸速率(R_eco)的变化特征。结果表明:3种植被类型白天的净生态系统CO₂交换量(NEE)和光量子通量密度(PPFD)存在明显的直角双曲线关系(P<0.05),其a、P_max和R_eco呈现出相似的季节变化趋势,在生长季初期(6月)最小,在7月或8月份达到最大;高寒矮嵩草草甸的a、P_max和R_eco大于灌丛草甸和沼泽化草甸,而后两者差别不大。

CLC Number:

ZHANG Fa-wei, LI Ying-nian, LI Hong-qin, WANG Qin-xue, DU Ming-yuan, ZHAO Liang, WANG Shi-ping. The Comparative Study of the Apparent Quantum Yield and Maximum Photosynthesis Rates of 3 Typical Vegetation Types on Qinghai-Tibetan Plateau[J]. , 2007, 15(5): 442-448.

张法伟, 李英年, 李红琴, 王勤学, 杜明远, 赵亮, 汪诗平. 青藏高原3种主要植被类型的表观量子效率和最大光合速率的比较[J]. , 2007, 15(5): 442-448.

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The Comparative Study of the Apparent Quantum Yield and Maximum Photosynthesis Rates of 3 Typical Vegetation Types on Qinghai-Tibetan Plateau

青藏高原3种主要植被类型的表观量子效率和最大光合速率的比较

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