Article
Plant Sciences
Zhaoguo Wang, Chuankuan Wang, Shirong Liu
Summary: The elevated CO2 concentration (eCO(2)) has the potential to improve plant water relations and carbon uptake, mitigating the effects of drought stress. However, the interactive effects of eCO(2) and drought on plant physiology and growth are not well understood. A meta-analysis was performed to investigate the interactive effects of eCO(2) and drought on plant water relations, photosynthesis, biomass production, and allocation. The results suggest that eCO(2) can improve leaf water status under drought conditions by reducing stomatal conductance and increasing root to shoot ratio. Elevated CO2 also alleviates the stomatal limitations on photosynthesis, leading to a stronger response to eCO(2) under drought conditions. However, eCO(2) and drought do not interact significantly on plant biomass production. The findings highlight the importance of eCO(2) in mitigating the adverse effects of drought on plant water relations and carbon sequestration.
JOURNAL OF ECOLOGY
(2022)
Article
Forestry
Juan Chen, Quan Liu, Lei Yu, Helena Korpelainen, Ulo Niinemets, Chunyang Li
Summary: The study found that under elevated temperature and CO2 conditions, the sex-specific responses of dioecious plants are modulated by interactions, and competition patterns further affect the eco-physiological responses to climate change treatments.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Multidisciplinary Sciences
Yunpeng Qiu, Lijin Guo, Xinyu Xu, Lin Zhang, Kangcheng Zhang, Mengfei Chen, Yexin Zhao, Kent O. Burkey, H. David Shew, Richard W. Zobel, Yi Zhang, Shuijin Hu
Summary: Climate warming and elevated ozone have tradeoffs between plant roots and symbiotic fungi, promoting organic carbon decomposition in a soybean agroecosystem. They reduce root biomass and colonization, but increase specific root length and shift AMF community composition, providing insights into plant-microbial responses to climate change.
Article
Environmental Sciences
Junqiang Zheng, Mingming Cui, Cong Wang, Jian Wang, Shilin Wang, Zhongjie Sun, Feirong Ren, Shiqiang Wan, Shijie Han
Summary: The study investigated the interactive effects of elevated atmospheric CO2, nitrogen deposition, precipitation, and warming on arbuscular mycorrhizal fungi communities in a semiarid grassland using an open-top chamber field experiment. It was found that the interactions among these global change factors significantly affected AMF community structure and assembly processes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Forestry
Siyeon Byeon, Kunhyo Kim, Jeonghyun Hong, Seohyun Kim, Sukyung Kim, Chanoh Park, Daun Ryu, Sim-Hee Han, Changyoung Oh, Hyun Seok Kim
Summary: In elevated CO2 conditions, the leaf nitrogen concentration of Fraxinus rhynchophylla seedlings was not reduced by nonstructural carbohydrate accumulation, suggesting a potential link with increased photosynthetic N-use efficiency. Contrary to expectations, leaf NSC decreased under elevated CO2, while stem nitrogen concentrations increased, indicating a complex response of different plant organs to elevated CO2 and nitrogen availability.
Article
Ecology
Eli R. Bendall, Michael Bedward, Matthias Boer, Hamish Clarke, Luke Collins, Andrea Leigh, Ross A. Bradstock
Summary: Elevated atmospheric CO2 concentration may affect species composition and promote the growth of certain species. However, changes in climate conditions, such as increased drought, may reduce the fertilization effects of CO2 on plant growth. Under drought conditions, mesic species are more affected. Elevated CO2 concentration increased the size of storage organs used during resprouting. Typical drought responses were reduced under elevated CO2. Seedling growth and resprouting may be enhanced by elevated CO2, but severe drought may offset this fertilization effect.
FUNCTIONAL ECOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Jinglan Cui, Xiuming Zhang, Stefan Reis, Chen Wang, Sitong Wang, Peiying He, Hongyi Chen, Hans J. M. van Grinsven, Baojing Gu
Summary: The current understanding of how the cropland nitrogen cycle responds to elevated atmospheric CO2 is limited. This study demonstrates that elevated CO2 alone promotes the intensification of nitrogen and carbon cycles in global croplands. This has significant implications for crop nitrogen harvest, fertilizer input requirements, and reactive nitrogen loss under future eCO2 scenarios. Incorporating the effect of rising CO2 on the nitrogen cycle into Earth system models is crucial for providing robust scientific evidence for policymaking.
NATURE SUSTAINABILITY
(2023)
Article
Environmental Sciences
Dongnan Jian, Guo-Yue Niu, Zhuguo Ma, Hongyan Liu, Dabo Guan, Xin Zhou, Juan Zhou
Summary: Drylands, the largest biome on Earth, are greatly influenced by climate change in terms of vegetation change, with climate change having a three times larger impact than elevated CO2. Land use and land cover change also play a significant role in specific regions. The contribution of elevated CO2 to vegetation greening in drylands is limited compared to the dominant climatic driving.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
R. K. Braghiere, J. B. Fisher, R. A. Fisher, M. Shi, B. S. Steidinger, B. N. Sulman, N. A. Soudzilovskaia, X. Yang, J. Liang, K. G. Peay, T. W. Crowther, R. P. Phillips
Summary: The study found that the distribution of mycorrhizal fungi has a significant impact on global carbon and nutrient cycling. As soil nitrogen becomes more limited, the costs for plants to acquire nitrogen through mycorrhizae have increased at a faster rate, suggesting that nutrient acquisition will increasingly rely on a higher portion of assimilated carbon to support productivity.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Plant Sciences
Siyeon Byeon, Wookyung Song, Minjee Park, Sukyung Kim, Seohyun Kim, HoonTaek Lee, Jihyeon Jeon, Kunhyo Kim, Minsu Lee, Hyemin Lim, Sim-Hee Han, Changyoung Oh, Hyun Seok Kim
Summary: The down-regulation of leaf N and Rubisco under elevated CO2 levels is accompanied by an increase in NSC, particularly in the upper canopy. Different canopy positions of plants show varying responses to CO2 concentrations, with Rubisco showing a negative correlation with NSC to some extent. The increase in chlorophyll content supports the down-regulation of Rubisco, leading to a reduction in photosynthetic N content under elevated CO2 conditions.
JOURNAL OF PLANT PHYSIOLOGY
(2022)
Article
Forestry
Rory C. O'Connor, Dana M. Blumenthal, Troy W. Ocheltree, Jesse B. Nippert
Summary: This study investigates the potential of elevated CO2 concentration to facilitate the growth of expanding woody plant species in rangelands. The results show that increased CO2 levels enhance photosynthetic rates, water-use efficiencies and leaf starch concentrations in multiple woody species. Additionally, elevated CO2 mitigates the physiological effects of chronic water stress on the juvenile plants, indicating a potential alleviation of abiotic limitations to woody plant establishment in rangelands.
Article
Agronomy
Jianyu Liu, Yuanyuan You, Jianfeng Li, Stephen Sitch, Xihui Gu, Julia E. M. S. Nabel, Danica Lombardozzi, Ming Luo, Xingyu Feng, Almut Arneth, Atul K. Jain, Pierre Friedlingstein, Hanqin Tian, Ben Poulter, Dongdong Kong
Summary: Climate change, elevated CO2 concentration, and land use change have significantly altered land evapotranspiration, with climate change being the primary driver of increased evapotranspiration. However, CO2 and land use change also play distinct roles in affecting evapotranspiration in different regions.
AGRICULTURAL AND FOREST METEOROLOGY
(2021)
Article
Biodiversity Conservation
Shuqi Xiao, Chao Wang, Kai Yu, Genyuan Liu, Shuang Wu, Jinyang Wang, Shuli Niu, Jianwen Zou, Shuwei Liu
Summary: Studies have shown that nitrogen deposition has significant effects on carbon uptake in forests and grasslands, as well as on N2O emissions from soil. However, the impact on SOC pool is limited. Overall, nitrogen deposition increases the net greenhouse gas balance in forests and grasslands.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Plant Sciences
Marzieh Asadi, Hamid Reza Eshghizadeh
Summary: This study found that sorghum plant growth and biochemical responses were influenced by water limited stress, with different genotypes showing varying performances. Atmospheric CO2 concentrations and nitrogen levels also played a role in the growth and biochemical responses of sorghum plants.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Plant Sciences
Siyeon Byeon, Wookyung Song, Minjee Park, Sukyung Kim, Seohyun Kim, HoonTaek Lee, Jihyeon Jeon, Kunhyo Kim, Minsu Lee, Hyemin Lim, Sim-Hee Han, ChangYoung Oh, Hyun Seok Kim
Summary: This study revealed that the down-regulation of photosynthesis is mainly caused by the dilution of nitrogen due to an increase in nonstructural carbohydrates, rather than progressive nitrogen limitation. Different plant species exhibit varying levels of flexibility in N allocation against changes in CO2 concentration.
JOURNAL OF PLANT PHYSIOLOGY
(2021)
Article
Forestry
Zhimin Li, Chuankuan Wang, Dandan Luo, Quanzhi Zhang, Ying Jin
Summary: Intraspecific variations in leaf traits and tree growth of Larix gmelinii Rupr. were studied along a toposequence, showing that leaf hydraulics traits and leaf economics traits had different effects on total biomass and increment, with interactions between leaf traits and site conditions leading to differences in tree growth.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Ecology
Zhaoguo Wang, Chuankuan Wang
Summary: Increasing CO2 concentration can enhance photosynthesis and reduce water loss, benefiting tree growth. Different tree species and ages respond differently to eCO2, while changes in temperature and water availability can impact these responses. This study improves our understanding of tree gas exchange in a changing climate.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2021)
Article
Ecology
Geshere Abdisa Gurmesa, Erik A. Hobbie, Shasha Zhang, Ang Wang, Feifei Zhu, Weixing Zhu, Keisuke Koba, Muneoki Yoh, Chuankuan Wang, Qiuliang Zhang, Yunting Fang
Summary: Assessment of nitrogen (N) saturation in forests is important for understanding ecosystem response to global changes. A conceptual model of N saturation stages was developed based on ammonification, nitrification, and denitrification rates, soil ammonium and nitrate concentrations, and N-15 enrichment patterns in the soil profile. Using data from forests in eastern Asia, it was found that the fraction of nitrate in total inorganic N indicated a gradient of N saturation, and N-15 enrichment patterns provided information on mineralization, nitrification, and denitrification rates.
Article
Plant Sciences
Zhaoguo Wang, Chuankuan Wang, Shirong Liu
Summary: The elevated CO2 concentration (eCO(2)) has the potential to improve plant water relations and carbon uptake, mitigating the effects of drought stress. However, the interactive effects of eCO(2) and drought on plant physiology and growth are not well understood. A meta-analysis was performed to investigate the interactive effects of eCO(2) and drought on plant water relations, photosynthesis, biomass production, and allocation. The results suggest that eCO(2) can improve leaf water status under drought conditions by reducing stomatal conductance and increasing root to shoot ratio. Elevated CO2 also alleviates the stomatal limitations on photosynthesis, leading to a stronger response to eCO(2) under drought conditions. However, eCO(2) and drought do not interact significantly on plant biomass production. The findings highlight the importance of eCO(2) in mitigating the adverse effects of drought on plant water relations and carbon sequestration.
JOURNAL OF ECOLOGY
(2022)
Article
Forestry
Zhaoguo Wang, Chuankuan Wang
Summary: Non-structural carbohydrates (NSC) play a crucial role as a carbon source for trees when carbon supply is limited. The storage and remobilization of NSC are important for the growth and survival of seedlings, with roots being the critical compartment. In deep shade, the decrease in NSC significantly affects leaf and stem respiration.
TREES-STRUCTURE AND FUNCTION
(2023)
Article
Biodiversity Conservation
Ying Jin, Guangyou Hao, William M. Hammond, Kailiang Yu, Xiaorong Liu, Qing Ye, Zhenghu Zhou, Chuankuan Wang
Summary: The sequence of water potentials for physiological dysfunctions of woody plants varies with aridity, with xeric species adopting a more conservative sequence to prevent tissue damage and mesic species adopting a riskier sequence to maximize carbon uptake. Integrating this aridity-dependent sequence of water potentials and key traits into vegetation models would improve predictions of woody plants' response to drought under climate change.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Ecology
Zhaoguo Wang, Chuankuan Wang
Summary: This study conducted a meta-analysis on 58 studies that manipulated water and light availability in woody plants, and found that shade alleviated the negative impact of drought on photosynthesis and facilitated biomass production. However, shade aggravated the effect of drought on osmotic adjustment. The effects of drought and shade on biomass allocation and leaf traits were orthogonal.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2023)
Article
Environmental Sciences
Wang Xing-chang, Liu Fan, Wang Chuan-kuan
Summary: Radiation plays a crucial role in the carbon, water, and energy exchanges of an ecosystem. This study examines the impact of slope orientation on radiation balance measurements in a temperate deciduous forest. The findings show that horizontally-installed sensors tend to overestimate incident solar radiation and underestimate reflected shortwave radiation. Correcting for these biases improves the accuracy of the energy balance measurements.
JOURNAL OF MOUNTAIN SCIENCE
(2022)
Article
Ecology
Geshere Abdisa Gurmesa, Shasha Zhang, Ang Wang, Feifei Zhu, Abubakari Said Mgelwa, Chuankuan Wang, Qiuliang Zhang, Weixing Zhu, Yunting Fang
Summary: Conversion of forests from natural and secondary mixed to plantation monocultures can change soil properties and alter ecosystem nitrogen status. Assessing and comparing nitrogen status across different forest types and sites is challenging due to conflicting conclusions from different indicators. In this study, we used a multiple-indicator approach to evaluate nitrogen status in larch monocultures and mixed secondary forests at three sites in northeastern China. Our results showed that nitrogen availability increased from north to south, consistent with climatic and nitrogen deposition gradients. Furthermore, the nitrogen availability differed between larch plantations and mixed forests, reflecting their different succession and management histories.
Article
Biodiversity Conservation
Zhaoguo Wang, Chuankuan Wang
Summary: This study investigated the interactive effects of elevated temperature and drought on plant carbon metabolism and biomass. The results showed that elevated temperature had no significant impact on leaf photosynthesis, but accelerated respiration under well-watered conditions. Drought had a negative effect on plant biomass, and elevated temperature exacerbated this effect. These findings contribute to our understanding of climate change impacts.
GLOBAL CHANGE BIOLOGY
(2023)