Leaf photosynthesis of Betula albosinensis seedlings as affected by elevated CO2 and planting density

Zhang, Yuanbin; Duan, Baoli; Qiao, Yu; Wang, Kaiyun; Korpelainen, Helena; Li, Chunyang

doi:10.1016/j.foreco.2007.12.015

Cited by 34 publications

(23 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The chambers constructed of glass walls with a polycarbonate plastic top transmit approximately 82% of photosynthetically active radiation (PAR) during the natural 12-h photoperiod. The computercontrolled heating and cooling system (LT/WSK-PLC; BQHGCT, Beijing, China), together with a set of magnetoelectric valves to control the pure CO 2 supply (pure CO 2 was produced by separating air), enabled the temperature and CO 2 concentration to be adjusted automatically inside the chambers according to the ambient conditions as described by Zhang et al (2008). Additionally, air humidity was controlled by supply water equipment with a monitor.…”

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

Nitrogen deposition limits photosynthetic response to elevated CO2 differentially in a dioecious species

Zhao

Zhang

et al. 2010

Oecologia

Self Cite

View full text Add to dashboard Cite

Sexual dimorphisms of dioecious plants are important in controlling and maintaining sex ratios under changing climate environments. Yet, little is known about sex-speciWc responses to elevated CO 2 with soil nitrogen (N) deposition. To investigate sex-related physiological and biochemical responses to elevated CO 2 with N deposition, Populus cathayana Rehd. was employed as a model species. The cuttings were subjected to two CO 2 regimes (350 and 700 mol mol ¡1) with two N levels (0 and 5 g N m ¡2 year ¡1). Our results showed that elevated CO 2 and N deposition separately increased the total number of leaves, leaf area (LA), leaf mass, net photosynthetic rate (P n ), light saturated photosynthetic rate (P max ), chlorophyll a (Chl a), and chlorophyll a to chlorophyll b ratio (Chl a/b) in both males and females of P. cathayana. However, the eVects on LA, leaf mass, P n , P max , Chl a and Chl a/b were weakened under the combined treatment of elevated CO 2 and N deposition. Males had higher leaf mass, P n , P max , apparent quantum yield ( ), carboxylation eYciency (CE), Chl a, Chl a/b, leaf N, and root carbon to N ratio (C/N) than did females under elevated CO 2 with N deposition. In contrast to males, females had signiWcantly higher levels of soluble sugars in leaves and greater starch accumulation in roots and stems under the same condition. The results of the present work imply that P. cathayana females are more responsive and suVer from greater negative eVects on growth and photosynthetic capacity than do males when grown under elevated CO 2 with soil N deposition.

show abstract

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

Nitrogen deposition limits photosynthetic response to elevated CO2 differentially in a dioecious species

Zhao

Zhang

et al. 2010

Oecologia

Self Cite

View full text Add to dashboard Cite

show abstract

“…The term competition is used here in the sense of negative interference (i.e., any direct or indirect negative impact) of one plant on another, while the term facilitate is defined as an interaction between two species that results in an increase in the growth of at least one of the species (Casper and Jackson, 1997;Rodriguez, 2006;Vasquez et al, 2008). Different sensitivities to elevated temperature in B. albo-sinensis and A. faxoniana are expected to shift the strength of competition under different temperature conditions (Zhang et al, 2008;Duan et al, 2013), which in turn may influence plants' ability to survive and grow. Interactions between B. albo-sinensis and A. faxoniana in subalpine forests may be sensitive to the effects of climate warming, especially during the tree establishment, since the natural regeneration of trees in subalpine ecosystems is mainly limited at the seedling stage.…”

Section: Introductionmentioning

confidence: 99%

Ecophysiological responses of two dominant subalpine tree species Betula albo-sinensis and Abies faxoniana to intra- and interspecific competition under elevated temperature

Duan

Dong

Zhang

et al. 2014

Forest Ecology and Management

Self Cite

View full text Add to dashboard Cite

“…Currently, there are over 1 million ha dragon spruce plantation in southwestern China, accounting for approximately 50% of the forest area in this region. To date, artificial warming studies in this region have focused more on aboveground components, with less focus on soils and belowground ecosystem processes (Yin et al 2008;Zhang et al 2008;Zhao and Liu 2009;Han et al 2009;Xu et al 2009). …”

mentioning

confidence: 99%

Initial responses of soil CO2 efflux and C, N pools to experimental warming in two contrasting forest ecosystems, Eastern Tibetan Plateau, China

Wan

Xiong

et al. 2010

Plant Soil

View full text Add to dashboard Cite

Alpine ecosystems are harsh environments where low temperatures are generally a limiting factor. Predicted global warming is thus expected to have a profound impact on alpine ecosystems in the future. This study was conducted to compare the effect of experimental warming on soils in two contrasting forest ecosystems (a dragon spruce plantation and a natural forest) using the open top chamber (OTC) method in the Eastern Tibetan Plateau of China. The OTC enhanced average daily mean soil temperatures by 0.61°C (plantation) and 0.55°C (natural forest), respectively, throughout the growing season. Conversely, soil volumetric moisture declined by 4.10% in the plantation and by 2.55% in the natural forest. Across all measuring dates, warming increased average soil CO 2 efflux by 10.6% in the plantation and by 15.4% in the natural forest. However, elevated temperatures did not affect the respiration quotient in either forest. Two-stage sulfuric acid hydrolysis was used to quantify labile and recalcitrant C and N fractions in the two contrasting soils. Warming significantly reduced labile C and N fractions in both ecosystems but did not influence the total, recalcitrant and microbial biomass C and N pools. Labile C, N and microbial biomass C showed significant interactions in warming × forest type × season. Irrespective of warming treatments, all measured pools were significantly larger in the natural forest compared to the plantation. Taken together, our results indicate that the lowered soil labile C and N pools may be induced by the increased soil CO 2 efflux. The responses of the natural forest soil were more sensitive to experimental warming than those of the plantation. We conclude that reforestation dramatically lowers soil C and N pools, further affecting the responses of forest soils to future global warming.

show abstract

Leaf photosynthesis of Betula albosinensis seedlings as affected by elevated CO2 and planting density

Cited by 34 publications

References 47 publications

Nitrogen deposition limits photosynthetic response to elevated CO2 differentially in a dioecious species

Nitrogen deposition limits photosynthetic response to elevated CO2 differentially in a dioecious species

Ecophysiological responses of two dominant subalpine tree species Betula albo-sinensis and Abies faxoniana to intra- and interspecific competition under elevated temperature

Initial responses of soil CO2 efflux and C, N pools to experimental warming in two contrasting forest ecosystems, Eastern Tibetan Plateau, China

Contact Info

Product

Resources

About