金川荒漠植物光响应曲线最优模型分析  

Analysis on optimum model of light response curve of desert plants in Jinchuan

作　　者：王引弟 巨天珍[1] 周玉霞 万子栋 高天鹏 杨颖丽[4] WANG Yin-di;JU Tian-zhen;ZHOU Yu-xia;WAN Zi-dong;GAO Tian-peng;YANG Ying-li(College of Geography and Environmental Science,Northwest Normal University,Lanzhou 730070;Gansu Mining Area Pollution Treatment and Ecological Restoration Engineering Research Center,Lanzhou 730070;Field Scientific Observation and Research Station for Ecological System and Environment in Mining Area of Northern Foot of Qilian Mountain,Jinchang 737100;College of Life Science,Northwest Normal University,Lanzhou 730070,China)

机构地区：[1]西北师范大学地理与环境科学学院,兰州730070 [2]甘肃省矿区污染治理与生态修复工程研究中心,兰州730070 [3]祁连山北麓矿区生态系统与环境野外科学观测研究站,金昌737100 [4]西北师范大学生命科学学院,兰州730070

出　　处：《生物学杂志》2019年第5期57-61,共5页Journal of Biology

基　　金：国家自然科学基金项目(31160118,31460162,30960060);甘肃省科技支撑计划(144FKCA086)

摘　　要：为探究荒漠植物的光合生理状况,采用Li-6400XT便携式光合仪在金川矿区测量了疏花软紫草( Arnebia szechenyi )、盐生草( Halogeton glomeratus )、木本猪毛菜( Salsola arbuscula )3种植物光合-光响应,并对其进行拟合分析,以期提高光合光响应曲线拟合的准确性并对3种植物的光合生理特征进行探索。研究发现:不同的模型对同一种植物的光响应曲线拟合结果存在较大差异,同一种模型对不同植物的拟合结果亦存在明显差异;直角双曲线修正模型为疏花软紫草和木本猪毛菜的拟合效果最优模型,而非直角双曲线模型对盐生草的拟合结果最佳;3种植物光合能力大小依次为疏花软紫草、木本猪毛菜和盐生草。In order to explore the photosynthetic characteristics of eremophytes in Jinchuan Mining area, the photosynthesis-light responses of Arnebia szechenyi , Halogeton glomeratus and Salsola arbuscula were measured with Li-6400XT portable photosynthesis system, and then the fitting analysis was carried out to improve the accuracy of photosynthetic response curve fitting and investigate the three species photosynthetic physiological characteristics. The results showed that the different models had great differences in fitting results of light response curve of the same plant, and the same model had also obvious differences in fitting results of the different species;the orthogonal hyperbolic correction was the optimal model for the fitting effect of the Arnebia szechenyi and Salsola arbuscula , while the non-orthogonal hyperbolic model was the best model for the fitting result of the Halogeton glomeratus;the Arnebia szechenyi had the greatest photosynthetic capacity, followed by Salsola arbuscula and Halogeton glomeratus .

关 键 词：疏花软紫草 盐生草 木本猪毛菜 光响应 最优拟合模型 

分 类 号：Q945[生物学—植物学]