Jianwu Yan

ORCID: 0000-0001-9411-8453
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About
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Research Areas
  • Plant Water Relations and Carbon Dynamics
  • Land Use and Ecosystem Services
  • Climate variability and models
  • Remote Sensing in Agriculture
  • Hydrology and Watershed Management Studies
  • Atmospheric and Environmental Gas Dynamics
  • Soil erosion and sediment transport
  • Rangeland Management and Livestock Ecology
  • Tree-ring climate responses
  • Aeolian processes and effects
  • Hydrology and Drought Analysis
  • Climate change impacts on agriculture
  • Atmospheric chemistry and aerosols
  • Flood Risk Assessment and Management
  • Urban Green Space and Health
  • Agricultural Innovations and Practices
  • Agricultural risk and resilience
  • Urban Agriculture and Sustainability
  • Plant Ecology and Soil Science
  • Environmental Monitoring and Data Management
  • Conservation, Biodiversity, and Resource Management
  • Environmental and Agricultural Sciences
  • Climate change and permafrost
  • Regional Development and Environment
  • Remote Sensing and LiDAR Applications

Shaanxi Normal University
2015-2025

China Tourism Academy
2016

Institute of Geographic Sciences and Natural Resources Research
2013-2014

Chinese Academy of Sciences
2013-2014

University of Chinese Academy of Sciences
2013-2014

Climate change and environmental monitoring management have received much attention recently, an integrated information system (IIS) is considered highly valuable. This paper introduces a novel IIS that combines Internet of Things (IoT), Cloud Computing, Geoinformatics [remote sensing (RS), geographical (GIS), global positioning (GPS)], e-Science for management, with case study on regional climate its ecological effects. Multi-sensors web services were used to collect data other the...

10.1109/tii.2014.2302638 article EN IEEE Transactions on Industrial Informatics 2014-01-31

Understanding how the dynamics of vegetation growth respond to climate change at different temporal and spatial scales is critical projecting future ecosystem adaptation ecosystems global change. In this study, we investigated vegetated (annual productivity, seasonality minimum amount cover) in China their relations with climatic factors during 1982–2011, using updated Global Inventory Modeling Mapping Studies (GIMMS) third generation satellite Advanced Very High Resolution Radiometer...

10.3390/rs6043263 article EN cc-by Remote Sensing 2014-04-10

Water scarcity and floods are the major challenges for human society both present future. Effective scientific management of water resources requires a good understanding cycles, systematic integration observations can lead to better prediction results. This paper presents an integrated approach resource based on geoinformatics including technologies such as Remote Sensing (RS), Geographical Information Systems (GIS), Global Positioning (GPS), Enterprise (EIS), cloud services. The introduces...

10.1109/tii.2013.2257807 article EN IEEE Transactions on Industrial Informatics 2013-04-12

Abstract Evapotranspiration (ET) is a key ecological process connecting the soil-vegetation-atmosphere system, and its changes seriously affects regional distribution of available water resources, especially in arid semiarid regions. With Grain-for-Green project implemented Loess Plateau (LP) since 1999, heat across region have experienced great changes. Here, we investigate associated driving forces ET LP from 2000 to 2012 using remote sensing-based evapotranspiration model. Results show...

10.1038/s41598-017-08477-x article EN cc-by Scientific Reports 2017-08-09

Changes in the land use/cover alter Earth system processes and affect provision of ecosystem services, posing a challenge to achieve sustainable development. In past few decades, Yellow River (YR) basin faced enormous social environmental sustainability challenges associated with degradation, soil erosion, vegetation restoration, economic development, which makes it important understand long-term dynamics this region. Here, using three decades Landsat imagery (17,080 images) incorporating...

10.3390/rs13071299 article EN cc-by Remote Sensing 2021-03-29

The occurrence of drought is related to complicated interactions between many factors, such as precipitation, temperature, evapotranspiration and vegetation. In this study, the relationships vegetation were investigated with a random forest (RF), new combined monitoring index (CDMI) was constructed. effectiveness CDMI in Shaanxi Province verified by situ 1 ∼ 12-month standardized precipitation (SPI); relative soil moisture (RSM) four other commonly used remote sensing indices. results show...

10.1080/10106049.2019.1633423 article EN Geocarto International 2019-06-17

Abstract. Current estimates of the terrestrial carbon fluxes in Asia show large uncertainties particularly boreal and mid-latitudes China. In this paper, we present an updated flux estimate for ("Asia" refers to lands as far west Urals is divided into Eurasia, temperate Eurasia tropical based on TransCom regions) by introducing aircraft CO2 measurements from CONTRAIL (Comprehensive Observation Network Trace gases Airline) program inversion modeling system CarbonTracker framework. We...

10.5194/acp-14-5807-2014 article EN cc-by Atmospheric chemistry and physics 2014-06-11

ABSTRACT Spatial stratified heterogeneity (SSH) is a prevalent characteristic of geospatial data, which can be effectively modeled and analyzed using the geographical detector other models from SSH family. Various related have been developed, focusing primarily on spatial data discretization, addressing dependence, capturing complex interactions. Moreover, incorporating discrete dependent variables also emerged. These diverse significantly enhance ability to analyze model SSH. However, lack...

10.1111/tgis.70032 article EN Transactions in GIS 2025-03-26

Grassland ecosystems act as a crucial role in the global carbon cycle and provide vital ecosystem services for many species. However, these low-productivity water-limited are sensitive vulnerable to climate perturbations human intervention, latter of which is often not considered due lack spatial information regarding grassland management. Here by application model tree ensemble (MTE-GRASS) trained on local eddy covariance data using predictors gridded management intensity field (grazing...

10.1111/gcb.13592 article EN Global Change Biology 2016-12-15

Abstract Understanding the net ecosystem CO 2 exchange (NEE) between terrestrial ecosystems and atmosphere is crucial for accurate estimation of carbon budgets, which remains unclear grassland ecosystems. Here we upscaled site‐level NEE from 44 flux towers (1,457 site‐months) to global scale by using a model tree ensemble approach that considers management activities (grazing cutting) (MTE‐GM). Cross‐validation showed MTE‐GM performs reasonably well in terms among‐site variability seasonal...

10.1029/2019jg005034 article EN Journal of Geophysical Research Biogeosciences 2019-12-20

Abstract Changing evapotranspiration (ET) will impact freshwater availability, knowledge of which is a critical prerequisite for policy development related to water resources management in an evolving climate, especially water‐limited regions. However, the socio‐economic effects are not considered due lack detailed information about this. Here we used well‐validated remote sensing model and multiple factors investigate driving ET changes over Loess Plateau during 1982–2012. Results showed...

10.1029/2020jd033380 article EN Journal of Geophysical Research Atmospheres 2020-11-21

Vegetation phenology is highly sensitive to climate change, and the phenological responses of vegetation factors vary over time space. Research on in different climatic regimes will help clarify key affecting changes. In this paper, based a time-series reconstruction Moderate-Resolution Imaging Spectroradiometer (MODIS) normalized difference index (NDVI) data using Savitzky–Golay filtering method, parameters were extracted, Spatio-temporal changes from 2001 2016 analyzed. Moreover, response...

10.3390/ijgi9020111 article EN cc-by ISPRS International Journal of Geo-Information 2020-02-19

Understanding the impact of water availability on vegetation growth in context climate change is crucial for assessing resilience to environmental shifts. In this study, relationship between and was studied using a variety indicators. The Normalized Difference Vegetation Index (NDVI), Enhanced (EVI), Solar-Induced Chlorophyll Fluorescence (SIF) were utilized as indicators, while standardized precipitation evapotranspiration index (SPEI) soil moisture indicators served use indices. To...

10.3390/rs15102593 article EN cc-by Remote Sensing 2023-05-16
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