CO2浓度升高条件下长白赤松幼苗种植密度对净光合速率的影响

应用生态学报 ›› 2002, Vol. ›› Issue (9): 1195-1197.

CO₂浓度升高条件下长白赤松幼苗种植密度对净光合速率的影响

王琛瑞, 黄国宏, 周玉梅, 韩士杰, 张军辉, 邹春静

中国科学院沈阳应用生态研究所陆地生态过程重点实验室, 沈阳 110016

收稿日期:2001-02-12 修回日期:2001-11-01 出版日期:2002-09-15
通讯作者: 王琛瑞,男,1970年生,硕士,助研,主要从事全球变化、水土流失防治和林火生态方面的研究,发表论文多篇.E-mail:wangchr@163.net
基金资助:
中国科学院资源环境领域知识创新工程项目(KZCX2-408);国家自然科学基金资助项目(30070158).

Effect of Pinus sylvestriformis seedlings density on net photosynthetic rate under elevated CO₂

WANG Chenrui, HUANG Guohong, ZHOU Yumei, HAN Shijie, ZHANG Junhui, ZOU Chunjing

Key Laboratory of Terrestrial Ecological Process, Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016

Received:2001-02-12 Revised:2001-11-01 Online:2002-09-15

摘要/Abstract

Abstract: The effect of Pinus sylvestriformis seedlings density on net photosynthetic rate was studied under elevated CO₂. Atmospheric CO₂ concentration was controlled in OTC (Open Top Chamber). The results showed that elevated CO₂ not only made net photosynthetic rates (NPRs) of two Pinus sylvestriformis seedlings densities increased,but also mitigated their intra-specific competition. Meanwhile,the difference of seedling NPRs between100 and 400 plant·m^-2 under 500 μmol·mol^-1 air CO₂ concentration was less than that under 350 μmol·mol^-1 with the same PARlevels. When air CO₂ concentration reached 700 μmol·mol^-1, the NPRs of seedlings under both planting densities were close to each other with the same PARlevels. The intra-specific competition was minimized under air CO₂ concentration of 700 μmol·mol^-1.

中图分类号:

王琛瑞, 黄国宏, 周玉梅, 韩士杰, 张军辉, 邹春静. CO₂浓度升高条件下长白赤松幼苗种植密度对净光合速率的影响[J]. 应用生态学报, 2002, (9): 1195-1197.

WANG Chenrui, HUANG Guohong, ZHOU Yumei, HAN Shijie, ZHANG Junhui, ZOU Chunjing . Effect of Pinus sylvestriformis seedlings density on net photosynthetic rate under elevated CO₂[J]. Chinese Journal of Applied Ecology, 2002, (9): 1195-1197.

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CO₂浓度升高条件下长白赤松幼苗种植密度对净光合速率的影响

Effect of Pinus sylvestriformis seedlings density on net photosynthetic rate under elevated CO₂

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