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Articles by Jun-De Dong
Total Records ( 2 ) for Jun-De Dong
  You-Shao Wang , Mei-Lin Wu , Ji-Rong Xu , Cui-Ci Sun , Jun-De Dong , Yu-Tu Wang and Fu-Lin Sun
  Chemometrics coupling geographic information system (GIS) was applied to investigate the spatial distribution patterns of nitrous oxide in the water column, its relation with environmental factors and to identify spatial human impacts on local scales. N2O concentrations in both the surface and bottom waters of the inner Pearl River Estuary had obvious variability along the Pearl River. The spatial variation in distribution of N2O concentration in the inner Pearl River Estuary was influenced by freshwater discharge along salinity gradients, which highlights the effects of human impacts on N2O emission rates. Principal component analysis recognized human impacts and their affected areas. The primary anthropogenic source in the area was domestic sewage. Cluster analysis further confirmed the results of principal component analysis. Moreover, GIS-based spatial analysis facilitated chemometrics.
  Mei-Lin Wu , Yan-Ying Zhang , Jun-De Dong , You-Shao Wang and Chuang-Hua Cai
  A self-organizing map (SOM) was utilized to identify the effects caused by human activities on water quality in Sanya Bay, South China Sea. Spatial pattern is mainly related to anthropogenic activities and hydrodynamic conditions. Water quality in Sanya Bay was divided into two groups by SOM: S1 and S2 were in east parts of Sanya Bay (Sanya River Estuary), which are areas of human activity, while the rest of the monitoring sites were in the south, central and northern parts of Sanya Bay, which are areas that have water exchanges from South China Sea. The results of this study may provide information on spatial patterns in Sanya Bay.
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