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Thinning effect on photosynthesis depends on needle ages in a Chinese fir (Cunninghamia lanceolata) plantation
Li, Ren-Shan; Yang, Qing-Peng; Zhang, Wei-Dong; Zheng, Wen-Hui; Chi, Yong-Gang; Xu, Ming3; Fang, Yun-Ting; Gessler, Arthur; Li, Mai-He; Wang, Si-Long
2017
发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
卷号580页码:900-906
摘要Canopies in evergreen coniferous plantations often consist of various-aged needles. However, the effect of needle age on the photosynthetic responses to thinning remains ambiguous. Photosynthetic responses of different-aged needles to thinning were investigated in a Chinese fir (Cunninghamia lanceolate) plantation. A dual isotope approach [simultaneous measurements of stable carbon (delta C-13) and oxygen (delta O-18) isotopes] was employed to distinguish between biochemical and stomatal limitations to photosynthesis. Our results showed that increases in net photosynthesis rates upon thinning only occurred in the current-year and one-year-old needles, and not in the two-to four-year-old needles. The increased delta C-13 and declined delta O-18 in current year needles of trees from thinned stands indicated that both the photosynthetic capacity and stomatal conductance resulted in increasing photosynthesis. In one-year-old needles of trees from thinned stands, an increased needle delta C-13 and a constant needle delta O-18 were observed, indicating the photosynthetic capacity rather than stomatal conductance contributed to the increasing photosynthesis. The higher water-soluble nitrogen content in current-year and one-year-old needles in thinned trees also supported that the photosynthetic capacity plays an important role in the enhancement of photosynthesis. In contrast, the delta C-13, delta O-18 and water-soluble nitrogen in the two- to four-year-old needles were not significantly different between the control and thinned trees. Thus, the thinning effect on photosynthesis depends on needle age in a Chinese fir plantation. Our results highlight that the different responses of different-aged needles to thinning have to be taken into account for understanding and modelling ecosystem responses to management, especially under the expected environmental changes in future. (C) 2016 Elsevier B.V. All rights reserved.
关键词Thinning Dual isotope approach Needle age delta C-13 delta O-18 Water-soluble nitrogen
学科领域Chemistry ; Geochemistry & Geophysics
DOI10.1021/acsearthspacechem.7b00055
收录类别SCI
语种英语
WOS关键词CARBON-ISOTOPE DISCRIMINATION ; WATER-USE EFFICIENCY ; EUCALYPTUS-NITENS ; WITHIN-CANOPY ; SUBTROPICAL AUSTRALIA ; NITROGEN ALLOCATION ; STABLE OXYGEN ; GAS-EXCHANGE ; PINE FOREST ; GROWTH
WOS记录号WOS:000408187000005
出版者ELSEVIER SCIENCE BV
文献子类Article
出版地AMSTERDAM
EISSN1879-1026
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41630755, 31570402] ; Swiss National FundSwiss National Science Foundation (SNSF) [31003A_159866] ; National Key Research and Development Program of China [2016YFD0600204]
作者邮箱yqp226@gmail.com ; slwang@iae.ac.cn
引用统计
被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/22250
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang 110016, Peoples R China
2.Huitong Natl Res Stn Forest Ecosyst, Huitong 418307, Peoples R China
3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
4.Rutgers State Univ, Dept Ecol Evolut & Nat Resources, Ctr Remote Sensing & Spatial Anal, New Brunswick, NJ 08901 USA
5.Swiss Fed Res Inst WSL, Forest Dynam, Zuercherstr 111, CH-8903 Birmensdorf, Switzerland
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Li, Ren-Shan,Yang, Qing-Peng,Zhang, Wei-Dong,et al. Thinning effect on photosynthesis depends on needle ages in a Chinese fir (Cunninghamia lanceolata) plantation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,580:900-906.
APA Li, Ren-Shan.,Yang, Qing-Peng.,Zhang, Wei-Dong.,Zheng, Wen-Hui.,Chi, Yong-Gang.,...&Wang, Si-Long.(2017).Thinning effect on photosynthesis depends on needle ages in a Chinese fir (Cunninghamia lanceolata) plantation.SCIENCE OF THE TOTAL ENVIRONMENT,580,900-906.
MLA Li, Ren-Shan,et al."Thinning effect on photosynthesis depends on needle ages in a Chinese fir (Cunninghamia lanceolata) plantation".SCIENCE OF THE TOTAL ENVIRONMENT 580(2017):900-906.
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