干旱区生态环境知识资源中心(Arid): Interaction of Soil Water and Nitrogen on the Photosynthesis and Growth in Pinus tabulaeformis Seedlings

Arid

	Interaction of Soil Water and Nitrogen on the Photosynthesis and Growth in Pinus tabulaeformis Seedlings
其他题名	土壤水分和氮素的交互作用对油松幼苗光合和生长的影响
	Guo WX(郭文霞); Zhao ZJ(赵志江); Zheng J(郑娇); Li JQ(李俊清)
来源期刊	Scientia Silvae Sinicae
ISSN	1001-7488
出版年	2017
卷号	53 期号:4 页码:37-48
中文摘要	【目的】了解土壤水分亏缺和氮沉降对油松生长和光合特性的影响,为造林和再造林树种选择提供依据。【方法】选取2年生油松幼苗,按照嵌套设计,设置4个土壤水分梯度( W1、W2、W3、W4 )和4个施氮水平( N1、N_2、N3、N4) ,调查土壤水分和施氮的交互作用对油松幼苗生长和光合特性的影响。【结果】土壤水分充足条件下( W3和W4) ,施氮能够显著促进油松幼苗的生长和生物量积累,但在水分亏缺条件下( W1和W2)却会加剧缺水,对幼苗生长产生负面影响; 土壤水分充足条件下,施氮能够提高油松幼苗的光合能力,但在水分亏缺状态下却会降低幼苗的光合能力,这与光系统Ⅱ的实际量子效率和光化学猝灭系数的变化规律一致; W3N_2处理对提高油松幼苗生长、生物量积累和光合作用能力最有利。【结论】在我国中部和东北部湿润地区,氮沉降对油松的光合作用和干物质生产是有利的,而在西北干旱半干旱地区氮沉降却是有害的,因此,在西北干旱半干旱地区实施生态恢复或水土保持工程时应该谨慎选择树种,尽量不再使用油松。
英文摘要	【Objective】Pinus tabulaeformis is widely distributed over China,and a dominant species as an afforestation and reforestation tree species in ecological restoration and soil conservation programs. But as the climate change intensifies,P. tabulaeformis forests are experiencing soil water deficit and nitrogen deposition during growth season. Thus an experiment was carried out to investigate the interaction of different soil water content and N addition on the growth and photosynthesis of P. tabulaeformis seedlings by measuring whole-plant growth,leaf area,biomass production and allocation,leaf photosynthesis,and chlorophyll fluorescence. 【Method】Two-year-old seedlings of P. tabulaeformis were subjected to a nested design with four soil water regimes( W1,W2,W3,and W4)and four N addition levels( N1,N_2, N3 and N4). 【Result】The result showed that N addition significantly enhanced growth and biomass production of the seedlings under plentiful soil water conditions( W3 and W4 ),but aggregated the negative effect of low soil water treatments( W1 and W2)on plant growth. Moreover,N addition was able to lead to an increase in photosynthetic capacity under high soil water conditions( W3 and W4),but a decrease in low soil water treatments( W1 and W2),which was paralleled with the shifts of PSII actual efficiency and PSII photochemical quenching. Furthermore,W3N_2 treatment was the appropriate N supply and optimum soil water conditions to growth,biomass production,and photosynthetic capacity of P. tabulaeformis seedlings. 【Conclusion】These results suggest N deposition might be beneficial to biomass production and photosynthesis of P. tabulaeformis forests in the central and northeast areas in China with abundant rainfall,but harmful to P. tabulaeformis forests in the northwest arid and semi-arid regions. Thus,in the northwest arid and semi - arid regions in China,P. tabulaeformis should no longer be used as afforestation and reforestation tree species in ecological restoration and soil conservation programs.
中文关键词	油松 ; 叶片生理 ; 光合作用 ; 叶绿素荧光 ; 生长 ; 生物量
英文关键词	Pinus tabulaeformis leaf physiology photosynthesis chlorophyll fluorescence growth biomass
类型	Article
语种	英语
国家	中国
收录类别	CSCD
WOS类目	Forestry
WOS研究方向	Forestry
CSCD记录号	CSCD:5999824
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236264
作者单位	郭文霞, 北京林业大学森林培育与保护省部共建教育部重点实验室, 北京 100083, 中国.; 郑娇, 北京林业大学森林培育与保护省部共建教育部重点实验室, 北京 100083, 中国.; 李俊清, 北京林业大学森林培育与保护省部共建教育部重点实验室, 北京 100083, 中国.; 赵志江, 福建中咨工程咨询有限公司, 福州, 福建 350003, 中国.
推荐引用方式 GB/T 7714	Guo WX,Zhao ZJ,Zheng J,et al. Interaction of Soil Water and Nitrogen on the Photosynthesis and Growth in Pinus tabulaeformis Seedlings[J]. 北京林业大学,2017,53(4):37-48.
APA	郭文霞,赵志江,郑娇,&李俊清.(2017).Interaction of Soil Water and Nitrogen on the Photosynthesis and Growth in Pinus tabulaeformis Seedlings.Scientia Silvae Sinicae,53(4),37-48.
MLA	郭文霞,et al."Interaction of Soil Water and Nitrogen on the Photosynthesis and Growth in Pinus tabulaeformis Seedlings".Scientia Silvae Sinicae 53.4(2017):37-48.