文献类型：期刊文献

中文题名：3种沙地植物光合碳同化对环境因子的生理响应

英文题名：Physiological Responses of the Photosynthetic Carbon Assimilation to Environmental Factors in three Sandy Plants

作者：宁虎森[1] 罗青红[1,2] 吉小敏[1] 朱雅娟[3] 孙慧瑛[1] 褚玲[1]

第一作者：宁虎森

机构：[1]新疆林业科学院造林治沙研究所;[2]中国科学院新疆生态与地理研究所;[3]中国林业科学研究院荒漠化研究所

年份：2014

卷号：50

期号：9

起止页码：173-179

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：“十二五”农村领域国家科技计划课题(2012BAD16B0305),(2012BAD16B0102)

语种：中文

中文关键词：响应曲线;光合碳同化;气象因子

外文关键词：response curve;photosynthetic carbon assimilation,ecological factor

分类号：Q945.11;X173

摘要：自然条件下植物光合作用受多个环境因子交互影响（余叔文等，1998），研究植物光合特性对环境因子的响应是评价植物在一定环境条件下的生长能力及适应能力的基础，因此，对研究植物生态环境适应性有着重要作用。荒漠生态系统作为高温、高光强（Arandal et al．，2001； Jiang et al．，2001）、水分亏缺（Guttermen，2001）等极端环境因素的聚集地，其植物光合、生长及分布受环境因子的影响更加强烈。关于荒漠地区植物光合对环境因子响应的研究较多（蒋高明等，2004；张盹明等，2009；靳甜甜等，2011；曹生奎等，2012），但有关新疆荒漠区沙木蓼（ Atraphaxis bracteata）、沙地桑（Morus alba）和罗布麻（ Apoceynum venetum）的光合特性对环境因子的响应研究较少。
Physiological responses of the photosynthetic carbon assimilation of one-Year-old seedlings of three sandy plant species to environmental factors were studied. The results showed that （ 1 ） the variation in photosynthetic characteristics among the sandy plant species was larger in high light and high CO2 concentration than those in low light （0 -400 μmol·m -2·s -1） and CO2concentration （0 -200 μmol·mol -1）. The response curves of photosynthetic rate of Atraphaxis bracteata to light intensity,CO2 concentration,temperature,and relative humidity were all located in the upper position to Morus alba and Apoceynum venetum in both July and September. （ 2 ） Photosynthetic parameters were significantly different between July and September in each species,with A. bracteata and M. alba having stronger photosynthetic capacity in July whereas A. venetum having stronger photosynthetic capacity in September. （ 3 ） A. bracteata was adapted to higher light intensity,CO2 concentrations and temperature,showing to some degree characteristics of sun plants. M. alba was sensitive to temperature and was adapted to shade environments. A. venetum had weak ability to adapt to high light and low CO2 assimilation,but had a longer duration of CO2 assimilation during growing seasons.