干旱区生态环境知识资源中心(Arid): 西鄂尔多斯地区5种荒漠灌丛光合固碳能力研究

Arid

	西鄂尔多斯地区5种荒漠灌丛光合固碳能力研究
其他题名	Photosynthetic carbon fixation capacity of five natural desert shrubs in west Ordos region
	党晓宏 1; 蒙仲举 2; 高永2 ; 汪季 1; 张波 3; 刘斌 1; 王祯仪 1; 翟波 1
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2017
卷号	31 期号:11 页码:128-135
中文摘要	以西鄂尔多斯地区5种天然荒漠灌丛为材料,利用LI - 6400便携式光合仪测定了灌丛的光合生理生态指标,对灌丛的光合固碳能力及其影响因子进行了分析。结果表明:单株灌丛日均固碳能力由强到弱为沙冬青(Ammopiptanthus mogolicus) >霸王(Zygophyllum xanthoxylum) >四合木(Tetraena mongolica) >红砂(Reaumuria songarica) >半日花(Helianthemum songaricum);依据年光合固碳量将荒漠灌丛分为3类:年光合固碳高灌丛-沙冬青、霸王(6.216 ~ 8.892t·hm~(- 2)·a~(- 1)) 、年光合固碳中等灌丛-四合木、红砂(1.742 ~ 3.962t ·hm~(- 2)·a~(- 1))和年光合固碳低等灌丛-半日花(0.386t·hm~(- 2)·a~(- 1)); 5种灌丛净光合速率均表现为夏季>秋季>春季,除了霸王、四合木和红砂灌丛在秋季呈现"单峰"曲线外,灌丛净光合速率日动态均呈现"双峰"曲线,有明显的"午休"现象; 5种荒漠灌丛均属于喜阳植物,其中四合木灌丛对强光有一定的适应性,沙冬青、霸王和红砂灌丛的光能利用效率相对较高,本研究将为荒漠地区的固碳潜力及碳汇计量提供一定的参考价值。
英文摘要	Taking five natural desert shrubs growing in west Ordos region as research materials,their photosynthetic physiological indices were measured with LI - 6400 photosynthesis systems in different seasons. Photosynthetic carbon fixation capacity and its impact factors were analyzed. Results showed that the capabilities of daily carbon fixation in terms of individual shrub was in order of Ammopiptanthus mogolicus ﹥ Zygophyllum xanthoxylum ﹥ Tetraena mongolica ﹥ Reaumuria songarica ﹥ Helianthemum songaricum. According to annual fixation carbon capacities,the five desert shrubs were divided into three categories. The highly annual carbon fixation group includes A. mogolicus and Z. xanthoxylum(6.216 ~ 8.892t·hm~(- 2)·a~(- 1)),medium annual carbon fixation group includes T. mongolica and R. songarica(1.742 ~ 3.962t·hm~(- 2)·a~(- 1)),lowly annual carbon fixation group includes H. songaricum(0.386t·hm~(- 2)·a~(- 1)). The net photosynthetic rates of five desert shrubs were significantly different among seasons; they were summer ﹥ autumn ﹥ spring. The daily net photosynthetic rate in leaves of five desert shrubs presented a double - peak curve,except Z. xanthoxylum,T. mongolica and R. songarica in autumn represented a single peak curve and an obvious " midday depression" phenomenon occurred. The five desert shrubs belonged to sunny plants,in which T. mongolica had certain adaptability to bright light and the light use efficiency of A. mogolicus,Z. xanthoxylum and R. songarica were relative higher than others. The study will provide the certain reference for carbon fixation potential and carbon sequestration estimation in desert area.
中文关键词	光合作用 ; 固碳能力 ; 优势灌丛 ; 影响因子 ; 西鄂尔多斯地区
英文关键词	photosynthetic carbon sequestration capacity dominant shrub communities impact factors west Ordos region
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES ; HORTICULTURE
WOS研究方向	Plant Sciences ; Agriculture
CSCD记录号	CSCD:6102284
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236092
作者单位	1.内蒙古农业大学沙漠治理学院, 内蒙古杭锦荒漠生态系统定位观测研究站, 呼和浩特, 内蒙古 010018, 中国; 2.内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国; 3.内蒙古自治区鄂尔多斯环境保护局, 鄂尔多斯, 内蒙古 017000, 中国
推荐引用方式 GB/T 7714	党晓宏,蒙仲举,高永,等. 西鄂尔多斯地区5种荒漠灌丛光合固碳能力研究[J]. 内蒙古农业大学,2017,31(11):128-135.
APA	党晓宏.,蒙仲举.,高永.,汪季.,张波.,...&翟波.(2017).西鄂尔多斯地区5种荒漠灌丛光合固碳能力研究.干旱区资源与环境,31(11),128-135.
MLA	党晓宏,et al."西鄂尔多斯地区5种荒漠灌丛光合固碳能力研究".干旱区资源与环境 31.11(2017):128-135.