Effects of biochar on the ecological performance of a subtropical landfill

Chen, Xun Wen1,4; Wong, James Tsz Fung1; Chen, Zhan Ting5; Tang, Thomas Wui Lung1; Guo, Hao Wen1; Leung, Anna Oi Wah5; Ng, Charles Wang Wai1; Wong, Ming Hung1,2,3,4

2018-12-10

10.1016/j.scitotenv.2018.06.379

SCIENCE OF THE TOTAL ENVIRONMENT   影响因子和分区

0048-9697

1879-1026

Landfills commonly occupy large areas of land that may be ecologically important. Ecological restoration of landfill cover is a necessary approach to rebuild sustainable habitats. However, unfavourable soil conditions and invasion by exotic plants in certain regions hinder the restoration. In this study, the effects of biochar as a soil amendment on the restoration of a landfill cover were investigated under field condition. Topsoils of a landfill cover in the subtropical region (Shenzhen, China) were mixed with 0, 5 and 10% (v/v) of biochar. Soil pH, electronic conductivity, organic matter, total organic carbon, water content, total N and total P were enhanced by biochar amendment. After nine months of self-succession, plant productivity, species richness and diversity were enhanced by biochar. The structures of soil bacterial and arbuscular mycorrhizal (AM) fungal communities were changed, and species richness and diversity were moderately promoted. Enhanced plant growth and diversity were probably attributed to a number of enhanced bacterial functions related to nutrient cycling including aerobic ammonia oxidation, aerobic nitrite oxidation, nitrification, sulphur respiration, nitrate respiration, nitrogen respiration, ureolysis, chemoheterotrophy and fermentation. The higher abundances of bacteria Streptomyces sp. and Pseudomonas sp. in biochar treatments potentially enhanced the AM fungal diversity. The bacterial diversity was more related to the soil properties, especially pH, than AM fungi. Continuous monitoring is necessary to track the changes of species composition and ecological functions over time. This is the first comprehensive study on the effects of biochar on the ecological performance of a man-made ecosystem. In addition to agricultural application, biochar can be used for restoring degraded lands. (c) 2018 Elsevier B.V. All rights reserved.

Disturbed habitat Biochar Restoration Plant Soil microbiome Ecological function

SCI ; EI

英语

通讯

Research Grants Council, Hong Kong SAR[HKUST6/CRF/12R]

Environmental Sciences & Ecology

Environmental Sciences

WOS:000445164000099

ELSEVIER SCIENCE BV

20182805534536

Bacteria ; Ecosystems ; Fungi ; Image reconstruction ; Organic carbon ; Restoration ; Soils ; Tropics

Meteorology:443 ; Municipal and Industrial Wastes; Waste Treatment and Disposal:452 ; Ecology and Ecosystems:454.3 ; Soils and Soil Mechanics:483.1 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2

ENVIRONMENT/ECOLOGY

Web of Science

1.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Room 4607, Kowloon, Hong Kong, Peoples R China
2.Educ Univ Hong Kong, CHEER, Tai Po, Hong Kong, Peoples R China
3.Educ Univ Hong Kong, Dept Sci & Environm Studies, Off B3-2-F-33, Tai Po, Hong Kong, Peoples R China
4.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China
5.Hong Kong Baptist Univ, Dept Biol, Kowloon Tong, Hong Kong, Peoples R China

Chen, Xun Wen,Wong, James Tsz Fung,Chen, Zhan Ting,et al. Effects of biochar on the ecological performance of a subtropical landfill[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,644:963-975.

Chen, Xun Wen.,Wong, James Tsz Fung.,Chen, Zhan Ting.,Tang, Thomas Wui Lung.,Guo, Hao Wen.,...&Wong, Ming Hung.(2018).Effects of biochar on the ecological performance of a subtropical landfill.SCIENCE OF THE TOTAL ENVIRONMENT,644,963-975.

Chen, Xun Wen,et al."Effects of biochar on the ecological performance of a subtropical landfill".SCIENCE OF THE TOTAL ENVIRONMENT 644(2018):963-975.