Publications by authors named "Liangju Yu"
We developed a set of web-based tools to meet the demand for spatial planning and help to determine the available space suitable for marine aquaculture activity. These tools were derived from AkvaVis concept, which was initially designed for the management of Norwegian aquaculture. The AkvaVis concept was adapted to different national aquaculture contexts and two other tools were developed in France and China.
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- The study used PCA, PMF, and MERM-Q models to analyze the levels, sources, and potential toxicity of PAHs in surface sediments at the Yellow River Estuary in China.
- Total concentrations of PAHs were significantly higher in the sediments (119.51 ng/g dry weight) compared to levels in nearby rivers and estuaries.
- The main sources of PAHs were identified as coal and biomass combustion, oil pollution, and vehicle emissions, although ecotoxicological risk was low according to the MERM-Q results.
Annual normalized difference vegetation index (NDVI) and chlorophyll-a (Chl-a) concentration are the most important large-scale indicators of terrestrial and oceanic ecosystem net primary productivity. In this paper, the Sea-viewing Wide Field-of-view Sensor level 3 standard mapped image annual products from 1998 to 2009 are used to study the spatial-temporal characters of terrestrial NDVI and oceanic Chl-a concentration on two sides of the coastline of China by using the methods of mean value (M), coefficient of variation (CV), the slope of unary linear regression model (Slope), and the Hurst index (H). In detail, we researched and analyzed the spatial-temporal dynamics, the longitudinal zonality and latitudinal zonality, the direction, intensity, and persistency of historical changes.
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