Jiquan Chen

Jiquan Chen
Michigan State University | MSU · Department of Geography

PhD - Ecosystem Analysis (University of Washington, Seattle, WA)
Professor, Michigan State University

About

696
Publications
191,470
Reads
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33,185
Citations
Citations since 2016
286 Research Items
19269 Citations
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Introduction
My research covers edge effects in fragmented landscapes, ecosystem carbon/water/energy fluxes, stream ecology, agricultural and bioenergy crops, hydrometeorology, grassland ecology; coupled socioecological systems, dynamics of urban systems, global change, and the role of institution. I am a fellow in the Ecological Society of America (ESA) and the American Association for the Advancement of Science (AAAS). He serves as the Editor-in-Chief for three publication outlets: Ecological Processes, book series of Landscape Studies – Springer, and book series of Ecological Science & Applications – HEP/Springer.
Additional affiliations
October 2021 - January 2022
Martin Luther University Halle-Wittenberg
Position
  • Professor
Description
  • Fulbright Global Scholar
June 2014 - present
Michigan State University
Position
  • Professor (Full)
August 2001 - May 2014
University of Toledo
Position
  • Professor
Education
August 1987 - November 1991
University of Washington Seattle
Field of study
  • Ecosystem Analysis
October 1983 - June 1986
Chinese Academy of Sciences
Field of study
  • Forest Ecology
October 1979 - July 1983
Inner Mongolia University
Field of study
  • Plant Ecology

Publications

Publications (696)
Article
Full-text available
Background: Transitional economies in Southeast Asia-a distinct group of developing countries-have experienced rapid urbanization in the past several decades due to the economic transition that fundamentally changed the function of their economies, societies and the environment. Myanmar, one of the least developed transitional economies in Southea...
Article
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Understanding the carbon fluxes and dynamics from a broad range of agricultural systems has the potential to improve our ability to increase carbon sequestration while maintaining crop yields. Short-term, single-location studies have limited applicability, but long-term data from a network of many locations can provide a broader understanding acros...
Article
Gross primary production (GPP) is a fundamental measure of the terrestrial carbon cycle critical to our understanding of ecosystem function under the changing climate and land use. Remote sensing enables access to continuous spatial coverage, but remains challenged in heterogeneous croplands. Coarse resolution products, like MOD17A (500 m), may agg...
Article
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We investigate the spatiotemporal patterns and environmental controls of the end of the vegetation growing season (EOS) in autumn across the alpine and temperate grasslands of China from 2001 through 2020, focusing on whether the EOS is likely a “dryness effect” due to drought or a “coolness effect” caused by cold temperature in autumn. The results...
Poster
Full-text available
Estimates of gross primary production (GPP) are essential to evaluating ecosystem health and carbon productivity in croplands. In this research, we compare multiple vegetation photosynthesis models (VPMs),which are built with remote sensing indices alone, to eddy covariance tower estimates of GPP in seven different cropland sites (i.e., corn, switc...
Article
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Studies examining the joint interactions and impacts of social-environmental system (SES) drivers on vegetation dynamics in Central Asia are scarce. We investigated seasonal trends and anomalies in drivers and their impacts on ecosystem structure and function (ESF). We explored the response of net primary production (NPP), evapotranspiration (ET) a...
Article
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Leaf area index (LAI) is one of the key biophysical indicators for characterizing the growth and status of vegetation and is also used in modeling earth system processes. Machine learning algorithms (MLAs) such as random forest regression (RFR), artificial neural network regression (ANNR) and support vector regression (SVR) based on satellite data...
Article
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Wetland CH4 emissions are among the most uncertain components of the global CH4 budget. The complex nature of wetland CH4 processes makes it challenging to identify causal relationships for improving our understanding and predictability of CH4 emissions. In this study, we used the flux measurements of CH4 from eddy covariance towers (30 sites from...
Article
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A reliable thermal-derived method for spatially and temporally continuous latent heat flux (LE) estimates is vital for agricultural water resource management. In this study, we proposed a novel three-source LE model (TSLEM) derived by all-weather thermal infrared (TIR) land surface temperature (LST) to generate all-sky daily LE in mainland China. I...
Article
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The replacement of natural lands with urban structures has multiple environmental consequences , yet little is known about the magnitude and extent of albedo-induced warming contributions from urbanization at the global scale in the past and future. Here, we apply an empirical approach to quantify the climate effects of past urbanization and future...
Article
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Kazakhstan is part of the Eurasian Steppes, the world's largest contiguous grassland system. Kazakh grassland systems are largely understudied despite being historically important for agropastoral practices. These grasslands are considered vulnerable to anthropogenic activities and climatic variability. Few studies have examined vegetation dynamics...
Article
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The rise of artificial intelligence (AI), blockchain (BC), and the internet of things (IoT) has had significant applications in the advancement of sustainability research. This review examines how these digital transformations drive natural and human systems, as well as which industry sectors have been applying them to advance sustainability. We ad...
Article
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ContextConventional life cycle assessment (LCA) has been increasingly criticized for lacking spatial information, especially for agricultural systems where high spatial variation and sensitivity is present.Objectives The objective of this research is twofold: first, to assess the potential environmental impacts and the production efficiency of past...
Article
Manipulating harvesting residues during harvesting has been promoted as a plausible option to improve national energy security and to reduce GHG emissions. A logical uncertainty regarding removing residues from harvested sites is whether and how GHG emissions will change as a result. In this study, static chamber-meteorological chromatography was u...
Article
An accurate estimation of spatially and temporally continuous global terrestrial evapotranspiration (ET) is essential in the assessment of surface energy, water and carbon cycles. The Global LAnd Surface Satellite (GLASS) ET product Version 4.0 (v4.0) based on the Bayesian model averaging (BMA) method was generated to estimate global terrestrial ET...
Article
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As the two largest landlocked countries, Kazakhstan and Mongolia have similar biophys-ical conditions and socioeconomic roots in the former Soviet Union. Our objective is to investigate the direction, extent, and spatial variation of land cover change at three administrative levels over three decades (1990-2020). We selected three provinces from ea...
Article
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To compare the impact of surface-atmosphere exchanges from rural and urban areas, fully vegetated areas (e.g. deciduous trees, evergreen trees and grass) commonly found adjacent to cities need to be modelled. Here we provide a general workflow to derive parameters for SUEWS (Surface Urban Energy and Water Balance Scheme), including those associated...
Article
Full-text available
In the global methane budget, the largest natural source is attributed to wetlands, which encompass all ecosystems composed of waterlogged or inundated ground, capable of methane production. Among them, northern peatlands that store large amounts of soil organic carbon have been functioning, since the end of the last glaciation period, as long-term...
Article
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AimsLivestock grazing is one of the most common utilization methods and exerts a significant effect on the carbon allocations between the above- and belowground components of a grassland ecosystem. The major aim of this study were to evaluate the proportions of 13C allocation to various C pools of the plant-soil system of a meadow steppe ecosystem...
Article
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Vegetation in Northeast China (NEC) has faced dual challenges posed by climate change and human activities. However, the factors dominating vegetation development and their contri- bution remain unclear. In this study, we conducted a comprehensive evaluation of the response of vegetation in different land cover types, climate regions, and time scal...
Article
Full-text available
Vegetation in Northeast China (NEC) has faced dual challenges posed by climate change and human activities. However, the factors dominating vegetation development and their contri- bution remain unclear. In this study, we conducted a comprehensive evaluation of the response of vegetation in different land cover types, climate regions, and time scal...
Article
Full-text available
Assessments of changes in landscape patterns and functions during urban development need to factor urban fringes (UPs) as part of the overall social-environmental system, especially in regions with poor transportation systems where urban functions depend heavily on surrounding suburbs. In this study, we use net primary production (NPP) as an integr...
Article
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This article is composed of three independent commentaries about the state of Integrated, Coordinated, Open, Networked (ICON) principles in the American Geophysical Union Biogeosciences section, and discussion on the opportunities and challenges of adopting them. Each commentary focuses on a different topic: (a) Global collaboration, technology tra...
Chapter
Murree Forest Division (MFD) is a part of western Himalayan range in Rawalpindi, Pakistan. An ecological field inventory was carried out. In all 454 vascular plants from 294 genera and 98 families were reported. The dominant families were Poaceae (54%, 53 spp.), Asteraceae (38%, 37 spp.), Papilionaceae, Lamiaceae, and Rosaceae (21%, 21 spp.), and A...
Article
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With the expansion of pure forest planting area and the increase in the number of rotations used, soil activity and plant productivity have significantly reduced. The functional diversity of soil microorganisms plays a vital role in forest health and the long-term maintenance of productivity. Though the optimization of forest cutting and regenerati...
Article
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During the urbanization process in Mongolia, Ulaanbaatar (UB) became the most dominant metro-city in the nation and the most popular migration destination. We examined the changes in migration to UB during the economic transition of 2002–2017 and explored driving forces using the dataset from the Mongolia National Labor Survey. The results confirme...
Article
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We identified four distinct clusters of 151 countries based on COVID-19 prevalence rate from 1 February 2020 to 29 May 2021 by performing nonparametric K-means cluster analysis (KmL). We forecasted future development of the clusters by using a nonlinear 3-parameter logistic (3PL) model, and found that peak points of development are the latest for C...
Article
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Land surface albedo is a significant regulator of climate. Changes in land use worldwide have greatly reshaped landscapes in the recent decades. Deforestation, agricultural development, and urban expansion alter land surface albedo, each with unique influences on shortwave radiative forcing and global warming impact (GWI). Here, we characterize the...
Article
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Hydropower dams produce huge impacts on renewable energy production, water resources, and economic development, particularly in the Global South, where accelerated dam construction has made it a global hotspot. We do not fully understand the multiple impacts that dams have in the nearby areas from a global perspective, including the spatial differe...
Article
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This paper synthesizes the contemporary challenges for the sustainability of the social-environmental system (SES) across a geographically, environmentally, and geopolitically diverse region – the Asian Drylands Belt (ADB). This region includes 18 political entities, covering 10.3% of global land area and 30% of total global drylands. At the presen...
Article
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Energy flux is a key component and driving factor in ecosystem processes and functions. Using 2015 datasets of eddy covariance, vegetation and meteorological measurements at four dominant ecosystems on the Mongolian Plateau, we analyzed the inter-site and seasonal variations and underlying biophysical controls on energy balance and partitioning in...
Article
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Selecting an appropriate model for simulating ecosystem respiration is critical in modeling the carbon cycle of terrestrial ecosystems due to their magnitude and high variations in time and space. There is no consensus on the ideal model for estimating ecosystem respiration in different ecosystems. We evaluated the performances of six respiration m...
Article
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Land reclamation and grassland management are important land utilization pattern for effective use and restoration of alkali-saline land in agriculture-pasture transition regions. These large-scale land cover/land use changes (LCLUC) could impose profound and divergent impacts on terrestrial carbon (C) and H 2 O cycling, hence require precise asses...
Article
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Background The lateral movements of mass and energy across the terrestrial-aquatic interface are being increasingly recognized for their importance in the carbon (C) balance of coastal/estuarine wetlands. We quantified the lateral flux of detrital C in the Yangtze estuary where invasive Spartina alterniflora has substantially and extensively altere...
Article
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Long-term observation of penguin abundance and distribution may warn of changes in the Antarctic marine ecosystem and provide support for penguin conservation. We conducted an unmanned aerial vehicle (UAV) survey of the Adélie penguin (Pygoscelis adeliae) colony on Inexpressible Island and obtained aerial images with a resolution of 0.07 m in 2018....
Article
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More than half of the solar energy absorbed by land surfaces is currently used to evaporate water 1. Climate change is expected to intensify the hydrological cycle 2 and to alter evapotranspiration, with implications for ecosystem services and feedback to regional and global climate. Evapotranspiration changes may already be under way, but direct o...
Article
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Low-power, open-path gas sensors enable eddy covariance (EC) flux measurements in remote areas without line power. However, open-path flux measurements are sensitive to fluctuations in air temperature, pressure, and humidity. Laser-based, open-path sensors with the needed sensitivity for trace gases like methane (CH4) and nitrous oxide (N2O) are im...
Article
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The leaf economics spectrum1,2 and the global spectrum of plant forms and functions³ revealed fundamental axes of variation in plant traits, which represent different ecological strategies that are shaped by the evolutionary development of plant species². Ecosystem functions depend on environmental conditions and the traits of species that comprise...
Article
Time series of wetland methane fluxes measured by eddy covariance require gap-filling to estimate daily, seasonal , and annual emissions. Gap-filling methane fluxes is challenging because of high variability and complex responses to multiple drivers. To date, there is no widely established gap-filling standard for wetland methane fluxes, with regar...
Article
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Integrating the dynamics and interconnections of natural and human system properties into a single measure would make it simpler to reliably and repeatedly assess and compare different social-environmental systems (SES). We propose a novel metric to assess the magnitudes and variations in SES dynamics by integrating longitudinal gross domestic prod...
Preprint
Full-text available
In the global methane budget, the largest natural source is attributed to wetlands that encompass all ecosystems composed of waterlogged or inundated ground, capable of methane production. Among them, northern peatlands that store large amounts of soil organic carbon have been functioning, since the end of the last glaciation period, as long-term s...
Article
Accurate monitoring of grassland aboveground fresh biomass (called AGB in the study) and its spatial-temporal dynamics is indispensable for sustainable grassland management. The most common method used in estimating AGB with remotely sensed data is based on the relationship between field AGB measurements and vegetation indices (VIs); however, the e...
Article
Accurate estimates of the spatiotemporal distribution of evapotranspiration (ET) are essential for understanding terrestrial energy, carbon and water cycles. Station-based observations are limited for their spatial coverage whereas satellite-derived ET products exhibit large discrepancies and uncertainties. Here we presented a Deep Neural Networks...
Article
The mining sector has served as a main pillar of the economy in Mongolia during both the socialist period prior to 1991 and the current free market economy. The government conversion of pastoral areas to mine extraction aggressively increased after 1990, with the assumption that mining activity would support the local labor market and boost the loc...
Article
Full-text available
PurposeThe selection of different LCA modeling approaches can lead to inconsistent applications and results. Here, we proposed decision trees to identify the most appropriate modeling approach (attributional/decisional/consequential LCA (ALCA/DLCA/CLCA)) and applied them to examine both direct and indirect impacts of different dairy production syst...
Article
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Climate benefit assessments of bioenergy crops often focus on biogeochemical impacts, paying little if any attention to biogeophysical impacts. However, land conversions required for large-scale bioenergy crop production are substantial and may directly affect the climate by altering surface energy balance. In the US, such land conversions are like...