Ji, Fujiang, Fa Li, Dalei Hao, Alexey N. Shiklomanov, Xi Yang, Philip A. Townsend, Hamid Dashti, Tatsuro Nakaji, Kyle R. Kovach, and Haoran Liu. 2024. “Unveiling the Transferability of PLSR Models for Leaf Trait Estimation: Lessons from a Comprehensive Analysis With a Novel Global Dataset”. New Phytologist.
Publications
2024
Yi, Koong, Rong Li, Todd M. Scanlon, Manuel T. Lerdau, Joseph A. Berry, and Xi Yang. 2024. “Impact of Atmospheric Dryness on Solar-Induced Chlorophyll Fluorescence: Tower-Based Observations at a Temperate Forest”. Remote Sensing of Environment 306: 114106.
Zhang, Yao, Mengyang Cai, Xiangming Xiao, Xi Yang, Mirco Migliavacca, Jeffrey Basara, Sha Zhou, and Yuanzhizi Deng. 2024. “Immediate and Lagged Vegetation Responses to Dry Spells Revealed by Continuous Solar-Induced Chlorophyll Fluorescence Observations in a Tall-Grass Prairie”. Remote Sensing of Environment 305: 114080.
O’Donnell, Kiera L., Emily S. Bernhardt, Xi Yang, Ryan E. Emanuel, Marcelo Ardón, Manuel T. Lerdau, Alex K. Manda, Anna E. Braswell, Todd K. BenDor, and Eric C. Edwards. 2024. “Saltwater Intrusion and Sea Level Rise Threatens US Rural Coastal Landscapes and Communities”. Anthropocene, 100427.
Yi, Koong, Kimberly A. Novick, Quan Zhang, Lixin Wang, Taehee Hwang, Xi Yang, Kanishka Mallick, Martin Béland, Gabriel B. Senay, and Dennis D. Baldocchi. 2024. “Responses of Marginal and Intrinsic Water‐use Efficiency to Changing Aridity Using FLUXNET Observations”. Journal of Geophysical Research: Biogeosciences 129 (6): e2023JG007875.
Wu, Genghong, Kaiyu Guan, Elizabeth A. Ainsworth, Duncan G. Martin, Hyungsuk Kimm, and Xi Yang. 2024. “Solar-Induced Chlorophyll Fluorescence Captures the Effects of Elevated Ozone on Canopy Structure and Acceleration of Senescence in Soybean”. Journal of Experimental Botany 75 (1): 350-63.
2023
Liu, Shuwen, Zhengbing Yan, Zhihui Wang, Shawn Serbin, Marco Visser, Yuan Zeng, Youngryel Ryu, Yanjun Su, Zhengfei Guo, and Guangqin Song. 2023. “Mapping Foliar Photosynthetic Capacity in Sub-Tropical and Tropical Forests With UAS-Based Imaging Spectroscopy: Scaling from Leaf to Canopy”. Remote Sensing of Environment 293: 113612.
Yang, Xi, Rong Li, Andrew Jablonski, Atticus Stovall, Jongmin Kim, Koong Yi, Yixin Ma, et al. 2023. “Leaf Angle As a Leaf and Canopy Trait: Rejuvenating Its Role in Ecology With New Technology”. Ecology Letters 26 (6): 1005-20. https://doi.org/https://doi.org/10.1111/ele.14215.
Abstract Life on Earth depends on the conversion of solar energy to chemical energy by plants through photosynthesis. A fundamental challenge in optimizing photosynthesis is to adjust leaf angles to efficiently use the intercepted sunlight under the constraints of heat stress, water loss and competition. Despite the importance of leaf angle, until recently, we have lacked data and frameworks to describe and predict leaf angle dynamics and their impacts on leaves to the globe. We review the role of leaf angle in studies of ecophysiology, ecosystem ecology and earth system science, and highlight the essential yet understudied role of leaf angle as an ecological strategy to regulate plant carbon–water–energy nexus and to bridge leaf, canopy and earth system processes. Using two models, we show that leaf angle variations have significant impacts on not only canopy-scale photosynthesis, energy balance and water use efficiency but also light competition within the forest canopy. New techniques to measure leaf angles are emerging, opening opportunities to understand the rarely-measured intraspecific, interspecific, seasonal and interannual variations of leaf angles and their implications to plant biology and earth system science. We conclude by proposing three directions for future research.
2022
Zeng, Yelu, Min Chen, Dalei Hao, Alexander Damm, Grayson Badgley, Uwe Rascher, Jennifer E Johnson, et al. 2022. “Combining Near-Infrared Radiance of Vegetation and Fluorescence Spectroscopy to Detect Effects of Abiotic Changes and Stresses”. Remote Sensing of Environment 270: 112856.
Li, Rong, Danica Lombardozzi, Mingjie Shi, Christian Frankenberg, Nicholas C Parazoo, Philipp Köhler, Koong Yi, Kaiyu Guan, and Xi Yang. 2022. “Representation of Leaf-to-Canopy Radiative Transfer Processes Improves Simulation of Far-Red Solar-Induced Chlorophyll Fluorescence in the Community Land Model Version 5”. Journal of Advances in Modeling Earth Systems 14 (3): e2021MS002747.