Characteristics of environmental factors and their effects on CH4 and CO2 emissions from a closed landfill: An ecological case study of Shanghai

被引：43

作者：

Chai Xiaoli ^{[1
]}

Lou Ziyang ^{[2
]}

Shimaoka, Takayuki ^{[3
]}

Nakayama, Hirofumi ^{[3
]}

Ying, Zhu ^{[1
]}

Cao Xiaoyan ^{[1
]}

Komiya, Teppei ^{[3
]}

Ishizaki, Toshio ^{[3
]}

Zhao Youcai ^{[1
]}

机构：

[1] Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Environm Engn, Shanghai 200092, Peoples R China

[3] Kyuchu Univ, Inst Environm Syst, Grad Sch Engn, Fukuoka 8128581, Japan

来源：

WASTE MANAGEMENT | 2010年 / 30卷 / 03期

基金：

中国国家自然科学基金;

关键词：

METHANE OXIDATION; COVER; SOILS; PLANTS;

D O I：

10.1016/j.wasman.2009.09.047

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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. (c) 2009 Elsevier Ltd. All rights reserved.

引用

页码：446 / 451

页数：6

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