Vegetation dynamics across natural and managed ecosystems Oct 10, 2021 Go to Project Site Image credit: rangermac Vegetation Phenology Tong Qiu Assistant Professor of Ecology I study impacts of global change on ecosystem functions. Publications Phenological Responses to Canopy Structure Depend on Vegetation Biomes Across the United States Across 25 NEON forest sites, we show that canopy gaps are consistently linked to phenological shifts, with earlier spring green-up at 15 sites and delayed autumn senescence at 18 sites. Typical gap sizes shift timing by −2 to +2 days in spring and −1 to +5 days in autumn, with effects varying by biome and background climate. Hanshi Chen, Yu Wei, Tong Qiu Cite Project DOI pdf Earth's record-high greenness and its attributions in 2020 Terrestrial vegetation is a crucial component of Earth’s biosphere, regulating global carbon and water cycles and contributing to … Yulong Zhang, Jiafu Mao, Ge Sun, Qinfeng Guo, Jeffrey Atkins, Wenhong Li, Mingzhou Jin, Conghe Song, Jingfeng Xiao, Taehee Hwang, Tong Qiu, Lin Meng, Daniel M. Ricciuto, Xiaoying Shi, Xing Li, Peter Thornton, Forrest Hoffman Cite Project DOI pdf Understanding the continuous phenological development at a daily time step with a Bayesian hierarchical space-time model: impacts of climate change and extreme weathers We developed a model to quantify how daily phenological development responds to climate change and extreme weather eventts. Tong Qiu, Conghe Song, James S. Clark, Bijan Seyednasrollah, Nuvan Rathnayaka, Junxiang Li Cite Project DOI pdf Deriving Annual Double-Season Cropland Phenology Using Landsat Imagery We developed an algorithm to derive phenology metrics for double-season crops using Landsat images. Tong Qiu, Conghe Song, Junxiang Li Cite Project DOI pdf Urbanization and climate change jointly shift land surface phenology in the northern mid-latitude large cities We found that amplitude of urbanization, quantified as changes of %ISA, can compensate the negative effects (delayed SOS or advanced EOS) and amplify the positive effects (earlier SOS or later EOS) of climate change on temporal variations of LSP in most climate zones (except the dry climate) Tong Qiu, Conghe Song, Yulong Zhang, Hongsheng Liu, James M. Vose Cite Project DOI pdf Impacts of urbanization on vegetation phenology over the past three decades in Shanghai, China Landscape metrics play important roles in modulating the spatial distribution of vegetation phenology along a rural to urban gradient Tong Qiu, Conghe Song, Junxiang Li PDF Cite Project DOI Events Hanshi's talk at the Ecological Society of America 2025 Hanshi will give a talk on how canopy nutrients influence autumn senescence Aug 12, 2025 11:00 AM — 11:15 AM Baltimore, MD Hanshi Chen, Tong Qiu Project Tong's invited talk at the American Geophysical Union fall meeting 2024 in Washington, D.C. Tong will give an invited talk about modeling phenology across scales Dec 11, 2024 3:20 PM — 3:30 PM Washington, D.C. Tong Qiu, Yu Wei, Hanshi Chen Project Xiaolu's talk at the American Geophysical Union fall meeting 2024 in Washington, D.C. Xiaolu will present on the connections between spring and fall phenology Dec 11, 2024 2:20 PM — 2:30 PM Washington, D.C. Xiaolu Li, Yu Wei, Hanshi Chen, Tong Qiu Project Hanshi's Talk at the Ecological Society of America 2024 Hanshi Chen will present on phenology response to canopy structure Aug 7, 2024 2:00 PM — 2:15 PM Long Beach, California Hanshi Chen, Tong Qiu Project Tong's Talk at the Ecological Society of America 2024 Tong will present phenological modeling using joint models Aug 7, 2024 1:45 PM — 2:00 PM Long Beach, California Hanshi Chen, Tong Qiu Project
Image credit: rangermac
Image credit: rangermac
Image credit: rangermac
Image credit: rangermac
