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Optimizing land use structure is currently a hot research topic in the land resource management field. In this study, we constructed a new land use structure optimization model based on the improved multi-objective differential evolution algorithm. This model made improvements in two aspects of the classic differential evolution algorithm, i.e., control parameters and adaptive strategies. On this...
Although the fertilization effect on soil microbial communities have been studied extensively, its influence combined with plastic-film mulching on seasonal variations of bacterial communities remains unknown. High throughput sequencing was used to explore seasonal bacterial communities in a longterm fertilization experiment that commenced in 1987. Non-fertilization and the application of manure combined...
Water contamination poses serious threats to human health and is more prevalent in developing countries. A bio sand filter (BSF) is useful technology for developing nations because of its low cost and good treatment effi ciency. Being a locally available plant species, melia (Melia azedarach) biomass was used in BSF to test its effi ciency for metal and pathogen removal. Different concentrations (2~6...
Heterotrophic nitrifying bacteria are attracting increasing interest due to their advantages in treatment of wastewater with high nitrogen concentration. In this work, four bacterial isolates (WS-1, WS-4, WS-6, and WS-7) with the capability of simultaneous heterotrophic nitrification and aerobic denitrification from soil, sludge, and water by a fast isolation procedure were studied. Isolates WS-1,...
In order to assess the aquatic ecosystem health in Yongjiang River, 13 sites from were sampled annually for density of individual phytoplankton species and community composition. Box-plots and Pearson correlation of 21 pre-selected metrics were then analyzed based on annual sampling and statistics data of the phytoplankton community. These metrics represent the characteristics of the phytoplankton...
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