Characteristics of environmental factors and their effects on CH4 and CO2 emissions from a closed landfill: An ecological case study of Shanghai |
| |
| Authors: | Chai Xiaoli Lou Ziyang Takayuki Shimaoka Hirofumi Nakayama Zhu Ying Cao Xiaoyan Teppei Komiya Toshio Ishizaki Zhao Youcai |
| |
| Institution: | 1. The State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China;2. School of Environmental and Engineering, Shanghai Jiaotong University, Shanghai 200092, China;3. Institute of Environmental Systems, Graduate School of Engineering, Kyuchu University, Fukuoka 812-8581, Japan;1. Geoenvironmental Group, Department of Civil Engineering, University of Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada;2. Dept. of Biology, University of Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada;1. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;2. State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China;3. Department of Civil Engineering, Lamar University, Beaumont, TX 77710, USA;4. College of Environment and Energy, South China University of Technology, Guangzhou 510006, China;5. University of Chinese Academy of Sciences, Beijing 100049, China;1. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China;2. Department of Civil Engineering, Monash University, Clayton, Melbourne, Vic, 3168, Australia |
| |
| Abstract: | To elucidate the influence of landfill gas (LFG) emission on environmental factors, an ecological investigation that was primarily concerned with the characteristics of vegetation, cover soil, and solid waste in the landfill was carried out. Temporal and spatial variations in vegetation diversity and coverage and their effects on reducing the emission of methane in the landfill were investigated. The results showed that both vegetation coverage and diversity increased with elapsed landfill closure time. The transition trend of the vegetation species was from perennial plant (Phragmites australis) to annual plants. Perennial vegetation was the dominant type of vegetation during the early closure period, and annual vegetation coverage increased with closure time. Vegetation preferentially appeared in areas of comparatively high depth of cover soil, which was characterized by high moisture retentiveness that enabled vegetation growth. The concentrations of methane and carbon dioxide in the cover soil significantly decreased with increasing closure time. The concentrations of methane and carbon dioxide from bare cover soil were higher than those from vegetated cover soil whereas the CO2 flux of bare cover soil was less than that of vegetated cover soil. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
