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[1]谢海慧,龚秦文,吴承祯,等.氮、硫沉降对尾巨桉和杉木幼苗光合特性的影响[J].应用与环境生物学报,2015,21(03):555-562.[doi:10.3724/SP.J.1145.2014.11030]
 XIE Haihui,GONG Qinwen,WU Chengzhen,et al.Effects of nitrogen and sulfur deposition on photosynthetic characteristics of Eucalyptus urophylla × Eucalyptus grandis and Cunninghamia lanceolata seedlings under simulated experimental condition[J].Chinese Journal of Applied & Environmental Biology,2015,21(03):555-562.[doi:10.3724/SP.J.1145.2014.11030]
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氮、硫沉降对尾巨桉和杉木幼苗光合特性的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
21卷
期数:
2015年03期
页码:
555-562
栏目:
研究论文
出版日期:
2015-06-25

文章信息/Info

Title:
Effects of nitrogen and sulfur deposition on photosynthetic characteristics of Eucalyptus urophylla × Eucalyptus grandis and Cunninghamia lanceolata seedlings under simulated experimental condition
作者:
谢海慧龚秦文吴承祯林勇明李键陈灿范海兰洪伟
1福建农林大学林学院 福州 350002 2福建省高校森林生态系统经营与过程重点实验室 福州 350002 3武夷学院生态与资源工程系 南平 354300
Author(s):
XIE Haihui GONG Qinwen WU Chengzhen LIN Yongming LI Jian CHEN Can FAN Hailan HONG Wei
1College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China 2Key Laboratory for Forest Ecosystem Process and Management of Fujian Province, Fuzhou 350002, China 3Ecology and Resources Process Department, Wuyi College, Nanpin 354300, China
关键词:
氮硫沉降尾巨桉杉木SPAD值可溶性蛋白含量净光合速率叶绿素荧光参数
Keywords:
nitrogen and sulfur depositions Eucalyptus urophylla × Eucalyptus grandis Cunninghamia lanceolata SPAD value soluble protein content net photosynthetic rate chlorophyll fluorescence parameter
分类号:
Q945.79
DOI:
10.3724/SP.J.1145.2014.11030
文献标志码:
A
摘要:
采用二因素三水平法设计模拟氮(N)、硫(S)沉降的盆栽试验,以Na2SO4为硫源、46% CO(NH2)2为氮源,其中氮沉降梯度为N1(0 kg hm-2 a-1)、N2(50 kg hm-2 a-1)、N3(100 kg hm-2 a-1),硫沉降梯度为S1(0 kg hm-2 a-1)、S2(15 kg hm-2 a-1)、S3(30 kg hm-2 a-1). 模拟试验6个月后,测定尾巨桉(Eucalyptus urophylla × Eucalyptus grandis)和杉木(Cunninghamia lanceolata)幼苗的SPAD值、可溶性蛋白含量、净光合速率(Pn)和叶绿素荧光参数,分析探讨氮、硫沉降处理下两树种幼苗光合特性的响应机制. 结果表明:与空白对照组相比,单一中氮沉降显著促进两树种幼苗Pn的上升(P < 0.05),且单一高氮沉降显著促进杉木幼苗可溶性蛋白含量的上升(P < 0.05),表明单一氮处理在一定程度上提高了两树种幼苗的光合能力. 尾巨桉幼苗各光合指标受单一硫沉降胁迫的影响较杉木幼苗更为显著,前者的SPAD值和可溶性蛋白含量在中硫处理下均显著下降(P < 0.05),Pn反之;而后者仅SPAD值在中、高硫处理下显著上升(P < 0.05). 氮、硫复合沉降下,尾巨桉幼苗各项指标未见明显变化(P > 0.05);杉木幼苗仅中氮高硫组的SPAD值和高氮高硫组的可溶性蛋白含量显著上升(P < 0.05). 综上,与单一氮、硫沉降相比,氮、硫复合沉降的交互效应并未显著增强两树种幼苗的光合特性,但两树种幼苗间对模拟氮、硫沉降的响应和耐受机制存在差异.
Abstract:
To evaluate the response mechanisms of Eucalyptus urophylla × Eucalyptus grandis and Cunninghamia lanceolata seedlings to simulated nitrogen (N) and sulfur (S) depositions, the two factors and three levels method was used for a pot experiment with Na2SO4 as sulfur source and 46% CO(NH2)2 as nitrogen source. Three levels of Na2SO4 and 46% CO(NH2)2 included: low-S (0 kg hm-2 a-1), medium-S (15 kg hm-2 a-1), high-S (30 kg hm-2 a-1), and low-N (0 kg hm-2 a-1), medium-N (50 kg hm-2 a-1), high-N (100 kg hm-2 a-1), respectively. The SPAD value, soluble protein content, net photosynthetic rate (Pn) and chlorophyll fluorescence parameters in leaves of the seedlings among different treatments were measured after six months. The results showed that, compared with the control group (N: 0 kg hm-2 a-1, S: 0 kg hm-2 a-1), single medium-N deposition significantly increased Pn of seedlings of both species (P < 0.05), and single high-N deposition significantly increased the soluble protein content of C. lanceolata seedlings (P < 0.05), showing that single N deposition partly improved the photosynthetic capacity of seedlings of both species. The effects of single S deposition on photosynthetic indicators of E. urophylla × E. grandis seedlings were more obvious than on those of C. lanceolata seedlings: For E. urophylla × E. grandis seedlings, SPAD value and soluble protein content decreased but Pn increased significantly under single medium-S deposition (P < 0.05); but for C. lanceolata seedlings, only SPAD value increased significantly under single medium-S deposition and single high-S deposition (P < 0.05). Under N and S complex depositions, none of the photosynthetic characteristic factors of E. urophylla × E. grandis seedlings showed significant change (P > 0.05), and only SPAD value and soluble protein content of C. lanceolata seedlings increased significantly in the medium N-high S treatment and high N-high S treatment (P < 0.05), respectively. In conclusion, compared with single N and S deposition, the interactive effect of N and S complex depositions does not significantly promote photosynthetic characteristics of E. urophylla × E. grandis or C. lanceolata seedlings; seedlings of the two species have different responses to simulated N and S depositions.

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备注/Memo

备注/Memo:
教育部博士点学科专项基金项目(20123515110011)和福建省科技重大专项(2012NZ01)资助 Supported by the Special Fund for Doctoral Program of the Ministry of Education of China (20123515110011) , and the Key Sci-tech Project of Fujian Province (2012NZ01)
更新日期/Last Update: 2015-06-23