Xiangyi Li

Xiangyi Li
Peking University | PKU · Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences

About

19
Publications
20,402
Reads
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640
Citations
Introduction
My research interests include climate extremes, vegetation dynamics and ecosystem functioning.
Additional affiliations
September 2019 - June 2022
Peking University
Position
  • PhD Student
September 2017 - June 2019
Peking University
Position
  • Master's Student
September 2013 - June 2017
Nanjing University
Position
  • Student

Publications

Publications (19)
Article
Full-text available
Climatic warming has greatly increased vegetation productivity in the extratropical Northern Hemisphere since the 1980s, but how long this positive relationship will continue remains unknown. Here we show changes in the effect of warming on Northern Hemisphere summer gross primary productivity for 2001–2100 using Earth system model outputs. The cor...
Article
Full-text available
The state of ecosystems is influenced strongly by their past, and describing this carryover effect is important to accurately forecast their future behaviors. However, the strength and persistence of this carryover effect on ecosystem dynamics in comparison to that of simultaneous environmental drivers are still poorly understood. Here, we show tha...
Article
Accurate quantification of vegetation carbon turnover time (τveg) is critical for reducing uncertainties in terrestrial vegetation response to future climate change. However, in the absence of global information of litter production, τveg could only be estimated based on net primary productivity under the steady‐state assumption. Here, we applied a...
Article
Full-text available
Large-scale afforestation is regarded as an effective natural climate solution. However, afforestation-induced changes in soil organic C (SOC) are poorly quantified due to the paucity of large-scale sampling data. Here, we provide the first comprehensive assessment of the afforestation impact on SOC stocks with a pairwise comparative study of sampl...
Article
Full-text available
The frequency and intensity of droughts have increased over the decades, leading to increased forest decline. The response of forest to drought can be evaluated by both its sensitivity to drought (resistance) and its post-drought recovery rate (resilience). However, it remains uncertain how drought resistance and resilience of forests change over t...
Article
Full-text available
Understanding how the temperature sensitivity of phenology changes with three spatial dimensions (altitude, latitude and longitude) is critical for the prediction of future phenological synchronization. Here, we investigate the spatial pattern of temperature sensitivity of spring and autumn phenology with altitude, latitude and longitude during 198...
Article
Full-text available
Changing amplitude of the seasonal cycle of atmospheric CO2 (SCA) in the northern hemisphere is an emerging carbon cycle property. Mauna Loa (MLO) station (20oN, 156oW), which has the longest continuous northern hemisphere CO2 record, shows an increasing SCA before the 1980s (P < 0.01), followed by no significant change thereafter. We analyzed the...
Article
Full-text available
Autumnal leaf senescence signals the end of photosynthetic activities in temperate deciduous trees and consequently exerts a strong control on various ecological processes. Predicting leaf senescence dates (LSD) with high accuracy is thus a prerequisite for better understanding the climate‐ecosystem interactions. However, modeling LSD at large spat...
Article
Full-text available
Earlier vegetation greening under climate change raises evapotranspiration and thus lowers spring soil moisture, yet the extent and magnitude of this water deficit persistence into the following summer remain elusive. We provide observational evidence that increased foliage cover over the Northern Hemisphere, during 1982–2011, triggers an additiona...
Article
With accumulation of carbon cycle observations and model developments over the past decades, exploring interannual variations (IAV) of terrestrial carbon cycle offers the opportunity to better understand climate‐carbon cycle relationships. However, despite growing research interest, uncertainties remain on some fundamental issues, such as the contr...
Article
Plants use only a fraction of their photosynthetically derived carbon for biomass production (BP). The biomass production efficiency (BPE), defined as the ratio of BP to photosynthesis, and its variation across and within vegetation types is poorly understood, which hinders our capacity to accurately estimate carbon turnover times and carbon sinks....
Article
The 2009/2010 drought in Southwest China was a "once in a century drought" event. This drought event had strong adverse impacts, such as water scarcity, crop failure, and economic loss, on ecosystems and the human society. Explicit representations of this drought event and associated changes in vegetation dynamics and carbon cycle, however, are sti...
Article
Carbon use efficiency (CUE), defined as the ratio of net primary production (NPP) to gross primary production (GPP), represents the capacity of plants in converting assimilated atmospheric carbon dioxide to ecosystem carbon storage. Process-based models are important tools for simulating NPP and GPP; yet the model performance in simulating vegetati...
Data
Supplement of "Asymmetric responses of primary productivity to altered precipitation simulated by ecosystem models across three long-term grassland sites". Tables S1–S14 in the Supplement detail the simulated processes for grasslands in the ecosystem models, including the N cycle, phosphorus (P) cycle, carbon (C) allocation scheme, carbohydrate res...
Article
Full-text available
Field measurements of aboveground net primary productivity (ANPP) in temperate grasslands suggest that both positive and negative asymmetric responses to changes in precipitation (P) may occur. Under normal range of precipitation variability, wet years typically result in ANPP gains being larger than ANPP declines in dry years (positive asymmetry),...
Article
Eddy covariance Evapotranspiration Model tree ensemble (MTE) Spatio-temporal change Land surface model A B S T R A C T Evapotranspiration (ET) is one of the most important fluxes in terrestrial ecosystems that regulate atmosphere -hydrosphere-biosphere interactions. Several studies have suggested that global ET has significantly increased in the pa...
Article
Full-text available
Changes in precipitation variability are known to influence grassland growth. Field measurements of aboveground net primary productivity (ANPP) in temperate grasslands suggest that both positive and negative asymmetric responses to changes in precipitation may occur. Under normally variable precipitation regimes, wet years typically result in ANPP...

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