1. Centre for Pearl River Delta Environmental Pollution and Control Research, State Key Laboratory of Organic Geochemistry; Guangzhou Institute of Geochemistry, Chinese Academy of Sciences; Guangzhou China
2. Guizhou Academy of Environmental Science and Designing; Guiyang China
3. Institute of Agricultural Resources and Regional Planning, Ministry of Agriculture Key Laboratory of Plant Nutrition and Nutrient Cycling; Chinese Academy of Agricultural Sciences; Beijing China