A5035231124- Marine and coastal ecosystems
- Water Quality Monitoring and Analysis
- Aquatic Ecosystems and Phytoplankton Dynamics
- Land Use and Ecosystem Services
- Remote Sensing in Agriculture
- Coastal wetland ecosystem dynamics
- Geochemistry and Geologic Mapping
- Educational Reforms and Innovations
- Water Quality Monitoring Technologies
- Ideological and Political Education
- Hydrology and Watershed Management Studies
- Environmental Changes in China
- Environmental and Agricultural Sciences
- Fish Ecology and Management Studies
- Conservation, Biodiversity, and Resource Management
- Remote Sensing and Land Use
- Water Quality and Pollution Assessment
- Advanced Computational Techniques and Applications
- Regional Economic and Spatial Analysis
- Wildlife Ecology and Conservation
- Planetary Science and Exploration
- Cryospheric studies and observations
- Medical Research and Treatments
- Climate variability and models
- Astro and Planetary Science
Xi'an University of Science and Technology
2024
Changjiang Water Resources Commission
2019-2024
Innovation Team (China)
2023-2024
Changjiang Institute of Survey, Planning, Design and Research
2024
State Forestry and Grassland Administration
2024
Qinghai Normal University
2024
Jimei University
2024
Harbin University of Commerce
2024
Hunan University
2019-2024
Indiana University – Purdue University Indianapolis
2014-2023
Abstract Inland and coastal waterbodies are critical components of the global biosphere. Timely monitoring is necessary to enhance our understanding their functions, drivers impacting on these functions deliver more effective management. The ability observe from space has led Earth observation (EO) becoming established as an important source information water quality ecosystem condition. However, progress toward a globally valid EO approach still largely hampered by inconsistences over...
Abstract The development of algorithms for remote sensing water quality (RSWQ) requires a large amount in situ data to account the bio-geo-optical diversity inland and coastal waters. GLObal Reflectance community dataset Imaging optical Aquatic environments (GLORIA) includes 7,572 curated hyperspectral reflectance measurements at 1 nm intervals within 350 900 wavelength range. In addition, least one co-located measurement chlorophyll , total suspended solids, absorption by dissolved...
In this study, we apply temperature, precipitation, and other data from 66 Chinese meteorological stations including Xining Lhasa to analyze the extreme climate events their impacting factors over Qinghai-Tibet Plateau during period 1961–2007. We focus on spatial temporal features of long-term changes five zones alpine grassland, meadow, desert areas.Results show that, past decades, in present trends towards warm wet conditions. These temperature precipitation are evident both seasonal means...
Given the extensive spread and ecological consequences of exotic Spartina alterniflora (S. alterniflora) over coast mainland China, monitoring its spatiotemporal invasion patterns is important for sake coastal ecosystem management security. In this study, Landsat series images from 1990 to 2015 were used establish multi-temporal datasets documenting temporal dynamics S. invasion. Our observations revealed that had a continuous expansion with area increasing by 50,204 ha during considered 25...
Following more than two decades of research and developments made possible through various proof-of-concept hyperspectral remote sensing missions, it has been anticipated that imaging would enhance the accuracy remotely sensed in-water products. This study investigates such expected improvements demonstrates utility radiometric measurements for retrieval near-surface phytoplankton properties1, i.e., absorption spectra (aph) biomass evaluated examining concentration chlorophyll-a (Chla)....
Accurate digital soil mapping (DSM) of organic carbon (SOC) is still a challenging subject because its spatial variability and dependency. This study aimed at comparing six typical methods in three types DSM techniques for SOC an area surrounding Changchun Northeast China. The include ordinary kriging (OK) geographically weighted regression (GWR) from geostatistics, support vector machines (SVR) artificial neural networks (ANN) machine learning, (GWRK) (ANNK) hybrid approaches. approaches,...
Spartina alterniflora (S. alterniflora) is one of the most harmful invasive plants in China. Google Earth (GE), as a free software, hosts high-resolution imagery for many areas world. To explore use GE monitoring S. invasion and developing an understanding process Zhangjiang Estuary, object-oriented method visual interpretation were applied to GE, SPOT-5, Gaofen-1 (GF-1) images. In addition, landscape metrics patches adjacent mangrove forests calculated gaps recorded by checking whether...
Reclamation is one of the fastest-growing land use type developed in coastal areas and has caused degradation loss wetlands as well serious environmental problems. This paper was aimed at monitoring spatiotemporal patterns reclamation Yangtze Estuary during 1960s 2015. Satellite images obtained from 1980 to 2015 topography maps were employed extract changes wetlands. Area-weight centroids calculated identify movement trend The results show that 2015, net area natural declined by 574.3 km2,...
Significance of reactive oxygen species (ROS) in subsurface has been increasingly documented recent years, whereas the mechanisms controlling ROS production and distribution remain poorly understood. Here we show that water table fluctuations regulate dynamics hydrogen peroxide (H2O2) unconfined aquifers. In one hydrological year, measured H2O2 an aquifer impacted by a 14 m level fluctuation adjacent Yangtze River. concentrations groundwater attained up to 123 nM at rising stage summer, but...
Retrieval of the phycocyanin concentration (PC), a characteristic pigment of, and proxy for, cyanobacteria biomass, from hyperspectral satellite remote sensing measurements is challenging due to uncertainties in reflectance (∆Rrs) resulting atmospheric correction instrument radiometric noise. Although several individual algorithms have been proven capture local variations biomass specific regions, their performance has not assessed on images sensors. Our work leverages machine-learning...
Mangroves are high-productive ecosystems and globally protected. Establishing nature reserves aimed at counteracting the negative effects of anthropogenic activities is one most pivotal approaches to conserve mangrove ecosystems. Evaluation conservation effectiveness for thus indispensable making knowledge-based policies funding-decisions by government managers. In this study, using composited Landsat images Google Earth Engine cloud platform object-oriented deep learning classification...
The suitability evaluation of rural settlements is the core foundation planning and layout optimization. Settlements in a farming-pastoral ecotone are migrative, dynamic, diverse, thus their changes constantly. However, our limited understanding factors that drive this dynamic process affect humane hindered high-quality development human such areas. Here we selected ethnic minority border area Dalham Maomingan United Banner (DMUB) Northern China to evaluate its settlements. A data-driven...
Existing remote-sensing algorithms to estimate the phycocyanin (PC) concentration in turbid inland waters have high associated uncertainties, especially at low PC concentrations diverse phytoplankton communities. This paper provides theoretical framework for a four-band semi-analytical algorithm (FBA_PC) which isolates absorption from second-order variability caused by yellow matter and other pigment absorption. The suits band configuration of both Medium Resolution Imaging Spectrometer...
Copper sulfate is a frequently used reagent for Microcystis blooms control but almost all the previous works have aeruginosa as target organism to determine dosages. The aim of this study was evaluate interspecific differences in responses various species varying Cu2+ concentrations (0, 0.05, 0.10, 0.25, and 0.50 mg L-1). half maximal effective concentration values M. aeruginosa, wesenbergii, flos-aquae, viridis were 0.16, 0.09, 0.49, 0.45 L-1 Cu2+, respectively. This showed...