Qiu lab at Duke University
Qiu lab at Duke University
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phenology
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
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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
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
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DOI
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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
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
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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
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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
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Project
DOI
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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
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