干旱区生态环境知识资源中心(Arid): 毛乌素沙地几种主要植物的光合特性

Arid

	毛乌素沙地几种主要植物的光合特性
其他题名	Photosynthetic Characteristics of Some Plant Species in the Mu Us Desert
	时慧君; 杜峰; 张兴昌
来源期刊	西北林学院学报
ISSN	1001-7461
出版年	2010
卷号	25 期号:4 页码:29-34,39
中文摘要	利用Li-6400型便携式光合作用系统测定了毛乌素沙地两种主要人工栽培树种(小叶杨和紫穗槐)和4种乡土树种(沙柳、长柄扁桃、蒙古扁桃和榆叶梅)的光响应曲线和CO_2响应曲线, 并对2种响应曲线用非直角双曲线模型拟合.结果表明: 小叶杨、la生沙柳、紫稳槐和榆叶梅对光能的利用效率高于4a生沙柳、长柄扁桃和蒙古扁桃; 小叶杨、沙柳、紫穗槐、长柄扁桃、榆叶梅和蒙古扁桃均为阳生植物; LCP和R day, P max和LSP, Pmax.和phi显著相关; 在相同的CO_2浓度下, 蒙古扁桃光合作用效率最低, 4a生沙柳、小叶杨、长柄扁桃、榆叶梅、1a生沙柳和紫穗槐的光合作用效率较高.平茬可有效提高沙柳对光照的利用效率, 生物量积累也较快.根据本研究, 小叶杨可能为C_4植物, 其余6种可能为C_3植物, 但仍需进一步的研究才能确定
英文摘要	The light response curves and carbon dioxide curves of two cultivated species (Populus simon and Amorpha fruticosa) and four local species(Salix psammophila, Prunus pedunculat, Prunus mongolica and Prunus triloba) in the Mu Us sandy land were measured with LiCor-6400. The results of non-rectangle hyperbola fitting indicated that the light efficiency of P. simon, one-year S.psammophila, A.fruticosa and P. triloba were greater than four-year S.psammophila, P.pedunculat and P. mongolica, P.simon, S. psammophila, A.fruticosa, P.triloba, P.pedunculat and P.mongolica were heliophyte. Significantly positive correlations were found between LCP and R day, P max and LSP, and Pmax andphi.The photosynthesis efficiencies of four-year S. psammophila, P. simon, P. pedunculat, P. triloba and one-year S. psammophila were higher than that of P. mongolica under the same CO_2 concentration. Light use efficiency and biomass of S.psammophila significantly increased because of stumping. According to this study P. simon may be C_4 pIant, other six plants may C_3 plant, however, further studies are needed to prove the conclusion
中文关键词	毛鸟素沙地 ; 光响应曲线 ; CO_2响应曲线 ; 非直角双曲线拟合
英文关键词	Mu Us sandy land light response curves carbon dioxide response curves non-rectangle hyperbola fitting
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:3936118
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225754
作者单位	西北农林科技大学资源环境学院, 杨陵, 陕西 712100, 中国
推荐引用方式 GB/T 7714	时慧君,杜峰,张兴昌. 毛乌素沙地几种主要植物的光合特性[J]. 西北农林科技大学,2010,25(4):29-34,39.
APA	时慧君,杜峰,&张兴昌.(2010).毛乌素沙地几种主要植物的光合特性.西北林学院学报,25(4),29-34,39.
MLA	时慧君,et al."毛乌素沙地几种主要植物的光合特性".西北林学院学报 25.4(2010):29-34,39.